Vertiv NetSure DCS48375 User guide

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 1 Revision J, May 9, 2023
SYSTEM OVERVIEW
Description: +24VDC to -48VDC @ up to 375A converter system.
The Vertiv™ NetSure™ DCS48375 Converter
System is comprised of a main shelf and up to two
(2) expansion shelves. Each shelf provides
mounting positions for up to four (4) converter
modules. Each shelf also provides a 15-position
distribution row (19” version) or 20-position
distribution row (23” version) which accepts bullet
nose circuit breakers and TPS/TLS fuseholders. A
GMT fuse block option is also available.
Note: Refer to UM1C24481500 (Converter
Module User Instructions) for converter
module information.
General Specifications
See detailed specifications on page 24.
Family: Vertiv™ NetSure™
Spec. Nos.: 584622100 (Main
Shelf – 19” version)
584622200
(Expansion Shelf – 19”
version)
584622300 (Main
Shelf – 23” version)
584622400 (Expansion Shelf – 23” version)
Model: DCS48375
Shelves per System: (1) Main Shelf, up to (2) Expansion Shelves
Input Voltage Nominal +24VDC
Output Voltage: -48VDC, -50VDC, -52VDC, or -54VDC
(User Selectable)
Output Capacity:
per Converter Module: 31A (1500W)
per Shelf: 125A, maximum (Converter Output)
per Distribution Row: 250A, maximum (Distribution Load)
System: 375A, maximum (Converter Output + Distribution Load)
Agency Approval: UL 60950 Recognized (“c UR”), NEBS
(see “1.4 System Compliance Information” under SPECIFICATIONS)
Mounting Type: Nominal 19” or 23” Relay Rack or Equipment Rack Mounting
Mounting Depth: 18.750” (w/out Expansion Wiring Cover)
20.375 (with Expansion Wiring Cover)
6” Front Projection
Mounting Height: 6.968” (4U) (w/out optional 1U Wiring Space Access Cover)
7.718” (5U) (with optional 1U Wiring Space Access Cover)
Access: Front and Rear for Installation, Expansion, and Maintenance.Front for
Operation.
Color: Distribution Door and Converter Module Faceplates: Textured Gray
Shelf: Galvannel
Environment: -40°C to +40°C (-40°F to +104°F).
-40°C to +65°C (-40°F to +149°F), with derating.
(see “1.3.1 Operating Ambient Temperature Range:”under SPECIFICATIONS)

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 2 Revision J, May 9, 2023
TABLE OF CONTENTS
SYSTEM OVERVIEW............................................................................................................................................................................................................. 1
MAIN COMPONENTS ILLUSTRATIONS..........................................................................................................................................................................3
584622100 (19” Main Shelf), 584622300 (23” Main Shelf), 584622200 (19” Expansion Shelf), 584622400 (23”
Expansion Shelf) .............................................................................................................................................................................................................3
ORDERING INFORMATION.................................................................................................................................................................................................4
584622100 Main Shelf and 584622200 Expansion Shelves – 19” Version ......................................................................................................4
584622300 Main Shelf and 584622400 Expansion Shelves – 23” Version.....................................................................................................4
DC-DC Converter Module (P/N 1C24481500).........................................................................................................................................................4
Distribution Devices.......................................................................................................................................................................................................5
Bullet Nose Circuit Breakers and Bullet Nose Fuseholders e/w TPS/TLS Fuses.....................................................................................................5
Optional Bullet Nose 6-Position GMT Distribution Fuse Block (P/N 545333)............................................................................................................9
Bullet Nose Bypass Busbar (P/N 535015) ........................................................................................................................................................................................10
Replacement Alarm, Reference, and Control Fuses ..................................................................................................................................................................10
Special Application Crimp Lugs, Busbar Adapter Kits, and Hardware Kits ..................................................................................................10
Special Application Crimp Lugs .............................................................................................................................................................................................................10
Busbar Adapter and Hardware Kits ......................................................................................................................................................................................................11
Wiring Notes ..................................................................................................................................................................................................................13
Recommended Frame Ground Wire Size and Lug Selection ...............................................................................................................................................13
Recommended DC Inputs Wire Sizes and Lugs Selection ....................................................................................................................................................13
Recommended Load Distribution Wire Sizes and Lugs Selection ...................................................................................................................................15
Recommended External Alarm, Reference, Monitoring, and Control Wire Sizes....................................................................................................17
Wiring Illustrations .......................................................................................................................................................................................................18
DC Inputs and Frame Ground ..................................................................................................................................................................................................................18
Load Distribution (TPS/TLS Fuses and Bullet Nose Circuit Breakers).........................................................................................................................19
Load Distribution (Optional Bullet Nose 6-Position GMT Fuse Block) ........................................................................................................................20
External Alarm, Reference, Monitoring, and Control.................................................................................................................................................................21
Shelf Interconnections ................................................................................................................................................................................................................................22
SPECIFICATIONS................................................................................................................................................................................................................ 24
1.1 System Output Ratings........................................................................................................................................................................................24
1.2System Input Ratings ...........................................................................................................................................................................................24
1.3 System Environmental Ratings.......................................................................................................................................................................... 24
1.4 System Compliance Information ....................................................................................................................................................................... 25
1.5 System Standard Features.................................................................................................................................................................................. 25
MECHANICAL SPECIFICATIONS................................................................................................................................................................................... 26
Overall Dimensions – 584622100 Main Shelf ....................................................................................................................................................... 26
Overall Dimensions – 584622200 Expansion Shelf ............................................................................................................................................ 27
Overall Dimensions – 584622300 Main Shelf ...................................................................................................................................................... 28
Overall Dimensions – 584622400 Expansion Shelf............................................................................................................................................ 29
RELATED DOCUMENTATION ........................................................................................................................................................................................30

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 3 Revision J, May 9, 2023
584622100 / 584622200 shown.
584622300 / 584622400 similar.
Front View
(door removed in illustration for clarity only)
MAIN COMPONENTS ILLUSTRATIONS
584622100 (19” Main Shelf), 584622300 (23” Main Shelf),
584622200 (19” Expansion Shelf), 584622400 (23” Expansion Shelf)
Mounting
Angles
P/N 1C24481500
Converter Modules.
Four (4) per Shelf.
15-Position (19” version)
20-Position (23” version)
Distribution Panel
Optional 1U Wiring Space
Access Cover (if space
permits). Allows greater
access to load distribution
return connection points.
One (1) Main Shelf
Up to Two (2) Expansion
Shelves
Expansion Wiring
Access Cover
(extra cover supplied with Expansion Shelf,
to be installed on Main Shelf)
Dual Input Feed
Adapter Busbars

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 4 Revision J, May 9, 2023
ORDERING INFORMATION
584622100 Main Shelf and 584622200 Expansion Shelves – 19” Version
Features
♦Includes reversible mounting angles for nominal 19” or 23” rack mounting.
♦Includes the optional 1U wiring space access cover.
♦Includes two (2) P/N 552506 optional dual input feed busbars.
♦Accepts up to four (4) DC-DC converter modules.
♦Includes a 15-position load distribution fuse / circuit breaker panel which accepts...
3A to 100A TPS/TLS fuses,
1A to 250A bullet nose circuit breakers, and
“Optional Bullet Nose 6-Position GMT Distribution Fuse Block (P/N 545333)”.
Ordering Notes
1) Order one (1) Spec. No. 584622100 Main Shelf and up to two (2) Spec. No. 584622200 Expansion Shelves per system.
2) Order DC-DC converter modules (P/N 1C24481500) as required.
3) Refer also to “Distribution Devices”, “Special Application Crimp Lugs, Busbar Adapter Kits, and Hardware Kits”, and
“Wiring Notes”under ORDERING INFORMATION.
584622300 Main Shelf and 584622400 Expansion Shelves – 23” Version
Features
♦Includes the optional 1U wiring space access cover.
♦Includes two (2) P/N 552506 optional dual input feed busbars.
♦Accepts up to four (4) DC-DC converter modules.
♦Includes a 20-position load distribution fuse / circuit breaker panel which accepts...
3A to 100A TPS/TLS fuses,
1A to 250A bullet nose circuit breakers, and
“Optional Bullet Nose 6-Position GMT Distribution Fuse Block (P/N 545333)”.
Ordering Notes
1) Order one (1) Spec. No. 584622300 Main Shelf and up to two (2) Spec. No. 584622400 Expansion Shelves per system.
2) Order DC-DC converter modules (P/N 1C24481500) as required.
3) Refer also to “Distribution Devices”, “Special Application Crimp Lugs, Busbar Adapter Kits, and Hardware Kits”, and
“Wiring Notes”under ORDERING INFORMATION.
DC-DC Converter Module (P/N 1C24481500)
Features
♦Provides one (1) Model C24/48-1500, Spec. No. 1C24481500,
1500 watt / 24 to 48 volt DC-DC converter module.
♦Refer to UM1C24481500 (Converter Module User Instructions) for converter
module information.
Restrictions
Each shelf accepts up to four (4) DC-DC converter modules.
Ordering Notes
1) Order by P/N 1C24481500 as required.

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 5 Revision J, May 9, 2023
Distribution Devices
Bullet Nose Circuit Breakers and Bullet Nose Fuseholders e/w TPS/TLS Fuses
Features
♦A single fuseholder provides for installation of a 3A to 100A Bussmann TPS or Littelfuse TLS fuse (as listed in Table 1).
This fuseholder plugs into a single distribution row mounting position. This fuseholder provides a GMT-A alarm fuse,
which operates open to provide an alarm indication if the associated distribution fuse opens.
♦Each circuit breaker (as listed in Table 2 and Table 3) plugs into one, two, or three distribution row mounting position(s).
Restrictions
Load should not exceed 80% of device rating.
Unless otherwise specified, fuses and/or circuit breakers are mounted from left to right, starting with the highest capacity and
working to the lowest capacity.
125A, 150A, 175A, and 200A circuit breakers occupy two mounting positions. 225A and 250A circuit breakers occupy three
mounting positions.
Caution: For ambient temperatures at or below +40°C (+104°F), overcurrent devices rated 100A or greater MUST
HAVE an empty mounting position between it and any other overcurrent protective device. Maximum size
circuit breakers that can be used are 100A single pole, 200A double pole, and 250A triple pole. Maximum
size fuse is 100A. The distribution row is rated for a maximum of 250A.
For ambient temperatures between +40°C (+104°F) and +65°C (+149°F), overcurrent devices rated 60A or
greater MUST HAVE an empty mounting position between it and any other overcurrent protective device.
Maximum size circuit breakers that can be used are 70A single pole. No double pole or triple pole circuit
breakers can be used. Maximum size fuse 70A. The distribution row is rated for a maximum of 250A.
Ordering Notes
1) Order distribution fuses as required per Table 1. Also order one (1) P/N 117201 bullet nose fuseholder per fuse ordered.
Order replacement alarm fuses (18/100A) per Table 5.
2) Order distribution circuit breakers as required per Table 2 or Table 3.
3) See Table 11 for recommended load distribution wire sizes and to order lugs.
•Distribution devices requiring a single distribution position require a two hole lug with 1/4” bolt clearance holes on
5/8” centers (order per Table 11, order hardware kits per Table 7).
•Distribution devices requiring two (2) or three (3) distribution positions require special application lugs (order per
Table 11 and Table 6) or busbar adapter kits (order per Table 7) and two hole lugs with 3/8” bolt clearance holes on
1” centers (order per Table 8).

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 6 Revision J, May 9, 2023
Ampere
Rating
Part
Number Bussmann P/N Littelfuse P/N
3
248230900
TPS-3
TLS003
5
248231000
TPS-5
TLS005
6
248231200
TPS-6
TLS006
10
248231500
TPS-10
TLS010
15
248231800
TPS-15
TLS015
20
248232100
TPS-20
TLS020
25
248232400
TPS-25
TLS025
30
248232700
TPS-30
TLS030
40
248233300
TPS-40
TLS040
50
248233900
TPS-50
TLS050
60
248234200
TPS-60
TLS060
70
248234500
TPS-70
TLS070
80
118413
--
TLS080
90
118414
--
TLS090
100
118415
--
TLS100
Bullet Nose Fuseholder
P/N 117201
(Includes Fuseholder, 18/100A
GMT-A Alarm Fuse, and GMT-X
Safety Fuse Cover)
See Table 11 for recommended load distribution wire sizes and lugs.
Table 1
Bullet Nose Fuseholders and TPS/TLS Fuses

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 7 Revision J, May 9, 2023
Ampere
Rating
Number
of Poles
Number of
Mounting
Positions
Part Number
Electrical Trip1
(White Handle)
Electrical/
Mechanical Trip2
(Black Handle)
1
1
1
102272
101596
3
1
1
102273
101597
5
1
1
102274
101598
10
1
1
102275
101599
15
1
1
102276
101600
20
1
1
102277
101601
25
1
1
102278
101602
30
1
1
102279
101603
35
1
1
102280
101604
40
1
1
102281
101605
45
1
1
121998
121997
50
1
1
102282
101606
60
1
1
102283
101607
70
1
1
102284
101608
75
1
1
102285
101609
80
1
1
121996
121995
100
1
1
102286
101610
125
2
2
516991
516838
150
2
2
516993
516839
175
2
2
144883
144884
200
2
2
121831
121832
225
3
3
144885
144886
250
3
3
121835
121836
See Table 11 for recommended load distribution wire sizes and lugs.
For 2-pole devices;
either order lugs from Table 6or
adapter kit 545404 and lugs from Table 8.
For 3-pole devices;
either order lugs from Table 6or
adapter kit 545571 and lugs from Table 8.
Circuit Breaker Alarm Operation:
1Provides an alarm during an electrical trip condition only.
2 Provides an alarm during an electrical or manual trip condition.
Table 2
Toggle Handle Bullet Nose Circuit Breakers

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 8 Revision J, May 9, 2023
Ampere
Rating
Number of Poles
(and Mounting
Positions)
Number of
Mounting
Positions
Part Number
Electrical Trip1
(White Handle)
Electrical/
Mechanical Trip2
(Black Handle)
1
1
1
142856
142878
3
1
1
142857
142879
5
1
1
142858
142880
10
1
1
142859
142881
15
1
1
142861
142882
20
1
1
142862
142883
25
1
1
142863
142884
30
1
1
142864
142885
35
1
1
142865
142886
40
1
1
142866
142887
45
1
1
142867
142888
50
1
1
142868
142889
60
1
1
142869
142890
70
1
1
142870
142891
75
1
1
142871
142892
80
1
1
142872
142901
100
1
1
142873
142902
125
2
2
142874
142903
150
2
2
142875
142904
200
2
2
142876
142905
250
3
3
142877
142906
See Table 11 for recommended load distribution wire sizes and lugs.
For 2-pole devices;
either order lugs from Table 6or
adapter kit 545404 and lugs from Table 8.
For 3-pole devices;
either order lugs from Table 6or
adapter kit 545571 and lugs from Table 8.
Circuit Breaker Alarm Operation:
1Provides an alarm during an electrical trip condition only.
2 Provides an alarm during an electrical or manual trip condition.
Table 3
Rocker Handle Bullet Nose Circuit Breakers

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 9 Revision J, May 9, 2023
Optional Bullet Nose 6-Position GMT Distribution Fuse Block (P/N 545333)
Features
♦Provides six (6) load distribution fuse positions
(1/4A to 15A GMT alarm fuses).
♦Mounts in two (2) distribution positions.
♦Screw clamp type load and load return terminals provided.
♦Includes six (6) dummy fuses equipped with safety fuse covers.
Restrictions
When used for power distribution, load should not exceed 80% of device rating, except 10 and
15 amp fuses, for which load should not exceed 70% of device rating.
Occupies two (2) bullet device mounting positions.
Terminal block wire size capacity: 24 to 14 AWG.
At 40°C ambient, GMT fuses greater than 10A MUST HAVE an empty mounting position
between it and any other fuse. Maximum total current is 35A. Maximum GMT fuse size is 15A.
At 65°C ambient, GMT fuses greater than 5A MUST HAVE an empty mounting position
between it and any other fuse. Maximum total current is 21A. Maximum GMT fuse size is 10A.
Ordering Notes
1) Order optional Bullet Nose 6-Position GMT Fuse Block (P/N 545333) as required.
2) Order fuses as required per Table 4.
Ampere Rating Part Number Fuse Color
18/100 (GMT-A)
248610301
---
1/4
248610200
VIOLET
1/2
248610300
RED
3/4
248610500
BROWN
1-1/3
248610700
WHITE
2
248610800
ORANGE
3
248610900
BLUE
5
248611000
GREEN
7-1/2
248611300
BLACK-WHITE
10
248611200
RED-WHITE
15
248611500
RED-BLUE
Replacement Safety
Fuse Cover (GMT-Y)
102774 ---
Replacement
Dummy Fuse
248872600 ---
Table 4
GMT Fuses

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 10 Revision J, May 9, 2023
Bullet Nose Bypass Busbar (P/N 535015)
Features
♦Replaces bullet nose circuit breaker or fuseholder where protective or disconnect
device is not required.
Ordering Notes
1) Order by P/N 535015 as required.
Replacement Alarm, Reference, and Control Fuses
Ordering Notes
1) Order replacement fuses as required per Table 5.
Assembly Desig. Function Size
(Amperes)
Type Part No.
TPS/TLS
Fuseholders
(P/N 117201)
FA
Fuse Alarm
18/100
Bussmann GMT-A
248610301
-- -- -- Safety Fuse Cover
(GMT-X)
248898700
Table 5
Replaceable Alarm, Reference, and Control Fuses
Special Application Crimp Lugs, Busbar Adapter Kits, and Hardware Kits
Special Application Crimp Lugs
Features
♦Lug connects one (1) cable to two (2) distribution positions. Lug has 1/4” bolt clearance holes on 5/8” centers.
Ordering Notes
1) See Table 6 for part numbers for various cable sizes.
Lead Size
Part Number
1/0 AWG
245393500
2/0 AWG
245393600
3/0 AWG
245393700
4/0 AWG
245393800
250 kcmil
514872
350 kcmil
514873
Table 6
Special Application Crimp Lugs / Strap Combination
(Two-Hole Lug, 1/4” Bolt Clearance Hole, 5/8” Centers)

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 11 Revision J, May 9, 2023
Busbar Adapter and Hardware Kits
Features
♦Kits include hardware shown in Table 7.
♦Unless otherwise specified, busbar adapter kits are factory installed when ordered with shelf(s).
Ordering Notes
1) See Table 7 for part numbers and descriptions of available kits. For kits that provide 3/8-16 on 1” lug landings, order lugs
from Table 8 as required.
Part Number
Description
545404
Busbar Adapter Kit – Converts (2) load positions (1/4-20 on 5/8”
centers) to (1) landing (3/8-16 on 1” centers). Right-angle load busbar &
straight return busbar for rear wiring egress.
545405 Busbar Adapter Kit – Converts (1) load position (1/4-20 on 5/8” centers)
to (1) load landing (1/4-20 on 5/8” centers), right angle.
545571
Busbar Adapter Kit – Converts (3) load positions (1/4-20 on 5/8”
centers) to (1) landing (3/8-16 on 1” centers). Right-angle load busbar &
straight return busbar for rear wiring egress.
552876
Lug Hardware Kit – (32) 1/4-20 nuts, lock washers and flat washers.
Table 7
Busbar Adapter and Hardware Kits
545404
545405
552876
545571

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 12 Revision J, May 9, 2023
Wire Size
Part Number
6 AWG
245349900
4 AWG
245350000
2 AWG
245348200
1/0 AWG
245347100
2/0 AWG
245347200
3/0 AWG
245347300
4/0 AWG
245347400
250 kcmil
245347500
300 kcmil
245347600
350 kcmil
245347700
400 kcmil
245347800
500 kcmil
245347900
600 kcmil
245348000
750 kcmil
245348100
Table 8
Crimp Lugs
(Two-Hole Lug, 3/8” Bolt Clearance Hole, 1” Centers)

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 13 Revision J, May 9, 2023
Wiring Notes
Refer also to the next section, Wiring Illustrations.
Recommended Frame Ground Wire Size and Lug Selection
Features
♦1/4-20 x 0.5” studs on 5/8” center are provided for installation of a customer provided frame ground lead terminated in a
2-hole lug.
Ordering Notes
1) Frame ground lug must be ordered separately (lug mounting hardware is provided). For recommended wire size and lug
selection, refer to Table 9. Lugs should be crimped per lug manufacturer’s specifications.
Recm 90°C
Wire Size 1
(AWG)
Recommended
Crimp Lug
2
Vendor Part No.
6
T & B
54205
Burndy
YAV6CL-2TC14FX
Vertiv
245346700
1Equipment grounding conductor size based on the American National Standards
Institute (ANSI) approved National Fire Protection Association's (NFPA) National
Electrical Code (NEC). Table 250-122 for copper wire was used. If aluminum or
copper clad aluminum grounding conductor is used, refer to Table 250-122 for
increased conductor size. For operation in countries where the NEC is not
recognized, follow applicable codes.
2Two-hole lug, 1/4" bolt clearance hole, 5/8" centers. Lugs should be crimped per lug
manufacturer’s specifications.
Table 9
Recommended Frame Ground Wire Size and Lug
Recommended DC Inputs Wire Sizes and Lugs Selection
Features
♦3/8-16 x 0.875” studs on 1” centers are provided for installation of customer provided DC input leads terminated in 2-hole
lugs. Terminations are provided for each converter module (individual feed). Adapter busbars are provided loose with
each shelf which allows two (2) converter modules to be fed by a single input.
Restrictions
Maximum lug width is 0.812 inches (individual feed) or 1.156 (dual feed).
Ordering Notes
1) DC input lugs must be ordered separately (lug mounting hardware is provided). For recommended wire sizes and lug
selection, refer to Table 10. Lugs should be crimped per lug manufacturer’s specifications.

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 14 Revision J, May 9, 2023
Individual Converter Module Feed
Ambient
Operating
Temperature
Recommended
DC Input
Protective
Device Rating
Recm 90°C
Wire Size 1
(AWG)
Loop
Length 2
(feet)
Recommended
Crimp Lug
3
Vendor Part No.
40°C
100A
2 60
T & B
256-30695-257
Burndy
YA2CL-2TC38
Vertiv
245348200
65°C 62 460
T & B
256-30695-257
Burndy
YA2CL-2TC38
Vertiv
245348200
Dual Converter Module Feed – One (1) Input per Two (2) Converter Modules
(requires two busbar adapters P/N 552506, shipped loose with each shelf)
Ambient
Operating
Temperature
Recommended
DC Input
Protective
Device Rating
Recm 90°C
Wire Size 1
(AWG)
Loop
Length 2
(feet)
Recommended
Crimp Lug 3
Vendor Part No.
40°C
200A 5
4/0 95
T & B
256-30695-835
Burndy
YAV28L-2TC38FX-YEL
Vertiv
245390500
65°C 64/0 795
T & B
256-30695-835
Burndy
YAV28L-2TC38FX-YEL
Vertiv
245390500
1Wire sizes based on recommendations of the American National Standards Institute (ANSI) approved National Fire
Protection Association's (NFPA) National Electrical Code (NEC). Table 310-16 for copper wire at
90°C
conductor
temperature, operating in ambient of
40°C
and
65°C
was used. For other operating ambient temperatures, refer to the
NEC. For operation in countries where the NEC is not recognized, follow applicable codes.
2Wire sizes listed are sufficient to restrict voltage drop to 1.0 volt or less at rated full load output current for the loop lengths
shown. Loop length is the sum of the lengths of the positive and negative leads.
3Two-hole lug, 3/8" bolt clearance hole, 1" centers. Lugs should be crimped per lug manufacturer’s specifications.
4Maximum and minimum OCPD is 80A at 65°C.
5Minimum OCPD is 200A at 40°C.
6Calculated input current is 60A @ 24Vdc at 65°C per converter module based on 85% efficiency rating and 1200VA.
7
Maximum and minimum OCPD is 150A at 65°C with de-rated input current.
Table 10
Recommended DC Input Wire Sizes and Lugs

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 15 Revision J, May 9, 2023
Recommended Load Distribution Wire Sizes and Lugs Selection
Features
♦1/4-20 x 0.625” studs on 5/8” centers are provided for installation of customer provided load distribution leads
terminated in 2-hole lugs.
Restrictions
Maximum lug width, 0.625 inches.
Maximum size of wire to be connected to a single fuseholder or circuit breaker position is 2 AWG.
Ordering Notes
1) Load distribution lugs must be ordered separately. Customer must provide (or order) lug mounting hardware. The rating
of the distribution device determines the load lead wire size requirement. For recommended wire sizes and lug selection
for various loop lengths per fuse/circuit breaker ampere rating, refer to Table 11. Lugs should be crimped per lug
manufacturer’s specifications.
•Maximum size of wire to be connected to a single fuseholder or circuit breaker position is 2 AWG. For wiring up to
350 kcmil, see “Special Application Crimp Lugs” under ORDERING INFORMATION.
•Distribution devices requiring a single distribution position require a two hole lug with 1/4” bolt clearance holes on
5/8” centers (order per Table 11, order hardware kits per Table 7).
•Distribution devices requiring two (2) or three (3) distribution positions require special application lugs (order per
Table 11 and Table 6) or busbar adapter kits (order per Table 7) and two hole lugs with 3/8” bolt clearance holes on
1” centers (order per Table 8).
Notes to Table 11:
1Wire sizes are based on recommendations of the American National Standards Institute (ANSI) approved National Fire
Protection Association's (NFPA) National Electrical Code (NEC). Table 310-16 for wire rated at 90°Cconductor
temperature operating in ambient temperatures of 40°C,50°C, and 65°C was used. For other operating ambient
temperatures, refer to the NEC. For operation in countries where the NEC is not recognized, follow applicable codes.
2Recommended wire sizes are sufficient to restrict voltage drop to 1.0 volt or less at listed branch current for the loop
lengths shown. Loop length is the sum of the lengths of the positive and negative leads.
3Wire Size / Loop Length Combination Calculated using 40°C Ambient Operating Temperature.
4Wire Size / Loop Length Combination Calculated using 50°C Ambient Operating Temperature.
5Wire Size / Loop Length Combination Calculated using 65°C Ambient Operating Temperature.
6These lugs are two-hole for 1/4" bolt clearance on 5/8" centers. Lugs should be crimped per lug manufacturer’s
specifications.
7Special application crimp lug / strap combination.
Table 11 (cont'd on next page)
Recommended Load Distribution Wire Sizes and Lugs

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 16 Revision J, May 9, 2023
Fuse/Circuit
Breaker Amperage
Recm 90°C Wire Size (1)
14 AWG 12 AWG 10 AWG 8 AWG 6 AWG 4 AWG 2 AWG
Loop Length (feet) (2)
1, 3, 5, 6, 10A
37 (3, 4, 5)
58 (3, 4, 5)
93 (3, 4, 5)
148 (3, 4, 5)
236 (3, 4, 5)
376 (3, 4, 5)
597 (3, 4, 5)
15A 24
(3, 4)
39
(3, 4, 5)
62
(3, 4, 5)
99
(3, 4, 5)
157
(3, 4, 5)
250
(3, 4, 5)
398
(3, 4, 5)
20A -- 29
(3, 4)
46
(3, 4, 5)
74
(3, 4, 5)
118
(3, 4, 5)
188
(3, 4, 5)
298
(3, 4, 5)
25A
--
--
37 (3, 4,)
59 (3, 4, 5)
94 (3, 4, 5)
150 (3, 4, 5)
239 (3, 4, 5)
30A
--
--
31 (3, 4)
49 (3, 4, 5)
78 (3, 4, 5)
125 (3, 4, 5)
199 (3, 4, 5)
35A
--
--
--
42 (3, 4)
67 (3, 4, 5)
107 (3, 4, 5)
170 (3, 4, 5)
40A -- -- -- 37
(3, 4)
59
(3, 4, 5)
94
(3, 4, 5)
149
(3, 4, 5)
45A -- -- -- 33
(3, 4)
52
(3, 4)
83
(3, 4)
132
(3, 4)
50A
--
--
--
29 (3)
47 (3, 4,)
75 (3, 4)
119 (3, 4)
60A
--
--
--
--
39 (3, 4)
62 (3, 4)
99 (3, 4)
70A
--
--
--
--
--
53 (3, 4)
85 (3, 4)
75A
--
--
--
--
--
50 (3, 4)
79 (3, 4)
80A -- -- -- -- -- 47
(3)
74
(3, 4)
Recommended Crimp Lug
(6)
Lug
245342300
245342300
245342300
245390200
245346700
245346800
245346900
Fuse/Circuit
Breaker
Amperage
Recm 90°C Wire Size (1)
2 AWG 1/0 AWG 2/0 AWG 3/0 AWG 4/0 AWG 250 kcmil 350 kcmil
Loop Length (feet) (2)
90A
66 (3, 4)
105 (3)
133 (3)
--
--
--
--
100A
59 (3, 4)
95 (3)
119 (3)
--
--
--
--
125A 47
(3)
76
(3)
95
(3)
120
(3)
-- -- --
150A
--
63 (3)
79 (3)
100 (3)
--
--
--
175A
--
--
68 (3, 4)
86 (3, 4)
108 (3, 4)
--
--
200A
--
--
--
75 (3)
95 (3)
112 (3)
--
225A
--
--
--
--
67 (3)
84 (3, 4)
100 (3, 4)
250A -- -- -- -- 76
(3,8)
90
(3, 8)
126
(3,8)
Recommended Crimp Lug
Lug
245346900 (6) 245393500 (7) 245393600 (7) 245393700 (7) 245393800 (7)
514872
(7)
514873
(7)
Table 11 (cont'd from previous page)
Recommended Load Distribution Wire Sizes and Lugs

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 17 Revision J, May 9, 2023
Recommended External Alarm, Reference, Monitoring, and Control Wire Sizes
Features
♦The system interface circuit card is mounted on the inside of the main shelf’s front door. This circuit card provides four
(4) sets of Form C relay contacts for external alarms, reference and monitoring inputs, plus an ESTOP input. Terminal
blocks are provided on the circuit card for customer connections. Refer to Paragraphs 1.5.3 and 1.5.4 under
“Specifications” for details.
Restrictions
Terminal block wire size capacity is 12 to 22 AWG.
Relay contacts are rated for 1A at 30VDC or 0.3A at 110VDC.
Ordering Notes
1) Recommended Wire Size: 22 AWG for Loop Lengths Up to 200 ft.
18-20 AWG for Loop Lengths Over 200 ft.

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 18 Revision J, May 9, 2023
Wiring Illustrations
DC Inputs and Frame Ground
DC Input Connections
* 3/8-16 x 0.875” studs on 1” centers
for installation of leads with 2-hole lugs.
* Provide separate inputs for each converter.
* Maximum lug width 0.812”.
* Torque to 240 in-lbs.
+24VDC
Converter #1 (top)
Converter #2
Converter #3
Converter #4 (bottom)
DC Input Leads
Enter Here Return
Converter #1 (top)
Converter #2
Converter #3
Converter #4 (bottom)
Frame Ground
* 1/4-20 x 0.5” studs on 5/8” center
for installation of lead with 2-hole lug.
* Torque to 84 in-lbs.
Rear panels removed in illustration.
Rear
Dual Converter Module Feed
with Adapter Busbars
P/Ns 552506
Feed Two
Feed One
+24VDC
Converter #3
Converter #4
Return
Converter #3
Converter #4
+24VDC
Converter #1
Converter #2
Return
Converter #1
Converter #2
DC Input Connections
* 3/8-16 x 0.875” studs on 1” centers
for installation of leads with 2-hole lugs.
* Provide one input for two converters.
* Maximum lug width 1.156”.
* Torque to 240 in-lbs.
Discard Extra Hardware
Busbars
P/Ns 552506
584622100 / 584622200 shown.
584622300 / 584622400 similar.

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 19 Revision J, May 9, 2023
Load Distribution (TPS/TLS Fuses and Bullet Nose Circuit Breakers)
Load Distribution Connections
* 1/4-20 x 0.625” studs on 5/8” centers
for installation of leads with 2-hole lugs.
* Maximum lug width 0.625”.
* Torque to 58 in-lbs.
-48VDC
Return
Front
Front
Components removed in
illustration for clarity only.
Load
Distribution
Leads Enter
Here (break
tabs off shield
as required)
P/N 545405
P/N 545404
P/N 545571
Top Cover Removed in
Illustration for Clarity Only
Optional Busbar Adapters
584622100 / 584622200 shown.
584622300 / 584622400 similar.

Vertiv™NetSure™DCS48375 Converter System
System Application Guide
Spec. No: 584622100, 584622200, SAG584622100, SAG584622200,
584622300, 584622400 Proprietary and Confidential © 2023 Vertiv Group Corp. SAG584622300, SAG584622400
Model No: DCS48375 Page 20 Revision J, May 9, 2023
Load Distribution (Optional Bullet Nose 6-Position GMT Fuse Block)
Load Leads
Load Return Leads
Wire Size Capacity: 26-14 AWG.
Recommended Torque: 4.5 in-lbs.