Vertiv NetSure 520406 User manual

NetSure™
Circuit Breaker Assembly
Installation Manual (Section 5930), Revision C
Specification Number: 520406

Vertiv |NetSure Circuit Breaker Assembly (Section 5930)|Rev. C
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The information contained in this document is subject to change without
notice and may not be suitable for all applications. While every precaution
has been taken to ensure the accuracy and completeness of this
document, Vertiv Group Corporation assumes no responsibility and
disclaims all liability for damages resulting from use of this information or
for any errors or omissions. Refer to other local practices or building codes
as applicable for the correct methods, tools, and materials to be used in
performing procedures not specifically described in this document.
This document may contain confidential and/or proprietary information of
Vertiv Group Corporation, and its receipt or possession does not convey
any right to reproduce, disclose its contents, or to manufacture or sell
anything that it may describe. Reproduction, disclosure, or use without
specific authorization from Vertiv Group Corporation is strictly prohibited.
Vertiv and the Vertiv logo are trademarks or registered trademarks of
Vertiv Group Corporation. NetPerform™, NetReach™, NetSure™ and
NetXtend™ are trademarks of Vertiv Energy Systems, Inc. All other
trademarks are the property of their respective owners.
© 2017 Vertiv Energy Systems, Inc. All rights reserved.

Vertiv |NetSure Circuit Breaker Assembly (Section 5930)|Rev. C
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TABLE OF CONTENTS
Admonishments Used in this Document............................................................4
Important Safety Instructions ..............................................................................5
Safety Admonishments Definitions......................................................................................................5
General Safety ...........................................................................................................................................................5
Description.................................................................................................................7
Accessories................................................................................................................7
GJ-Type Circuit Breakers ..............................................................................................................................7
Circuit Breaker Mounting Kit ......................................................................................................................7
Dimensions.................................................................................................................8
Installer’s Connections ...........................................................................................9

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ADMONISHMENTS USED IN THIS DOCUMENT
DANGER
! Warns of a hazard the reader will be exposed to that will likely result
in death or serious injury if not avoided. (ANSI, OSHA)
WARNING
! Warns of a potential hazard the reader may be exposed to that could
result in
death or serious injury if not avoided. This admonition is not used for situations that pose a
risk only to equipment, software, data, or service. (ANSI)
CAUTION
! Warns of a potential hazard the reader may be exposed to that could
result in minor or moderate injury if not avoided. (ANSI, OSHA) This admonition is not
us
ed for situations that pose a risk only to equipment, data, or service, even if such use
appears to be permitted in some of the applicable standards. (OSHA)
ALERT
! Alerts the reader to an action that must be avoided in order to protect
equipment, software, data, or service. (ISO)
ALERT
! Alerts the reader to an action that must be performed in order to prevent
equipment damage, software corruption, data loss, or service interruption. (ISO)
FIRE SAFETY
! Informs the reader of fire safety information, reminders, precautions,
or policies, or of the locations of fire
-fighting and fire-safety equipment. (ISO)
SAFETY
! Informs the reader of general safety information, reminders, precautions, or
policies not related
to a particular source of hazard or to fire safety. (ISO, ANSI, OSHA)

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IMPORTANT SAFETY INSTRUCTIONS
Safety Admonishments Definitions
Definitions of the safety admonishments used in this document are listed under “Admonishments Used in this
Document” on page 4.
General Safety
DANGER! YOU MUST FOLLOW APPROVED SAFETY PROCEDURES.
Performing the following procedures may expose you to hazards. These procedures should be
performed by qualified technicians familiar with the hazards associated with this type of equipment.
These hazards may include shock, energy, and/or burns. To avoid these hazards:
a) The tasks should be performed in the order indicated.
b) Remove watches, rings, and other metal objects.
c) Prior to contacting any uninsulated surface or termination, use a voltmeter to verify that no voltage
or the expected voltage is present. Check for voltage with both AC and DC voltmeters prior to
making contact.
d) Wear eye protection.
e) Use certified and well maintained insulated tools. Use double insulated tools appropriately rated for
the work to be performed.

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DESCRIPTION
Part No. 520406 is a Circuit Breaker Assembly that accepts up to two (2) separately ordered GJ-type circuit
breakers. The assembly will accept a third circuit breaker if an accessory Circuit Breaker Mounting Kit is
ordered and installed. This Circuit Breaker Assembly is designed for wall mounting. Furnished brackets permit
mounting in either a 19” or 23” relay rack. See Dimensions for mounting details. See Table 1for a list of
available circuit breakers.
NOTE! Input Return and Load Return wiring is external to this assembly, and must be furnished by the
customer.
This panel is UL Listed as a DC Power Distribution Center for Communication Equipment. In addition, this unit
meets the requirements of CSA 22.2, No. 225 and is tested and Certified by UL ("c UL") as a Custom Built Power
Distribution Center for Communications Equipment.
ACCESSORIES
GJ-Type Circuit Breakers
Order circuit breakers from the following table per job requirements.
Table 1:
Ampere
Rating
Number of
Mounting
Positions
Part Number
Electrical/
Mechanical Trip1
Part Number
Electrical Trip2
100
1
256621700 256621300
125 1 256621600 256621400
150
1
256621800 256622400
175 1 256621900 256622500
200
1
256622200 256622600
225 1 256622900 256622700
250
1
256623500 256623400
Circuit Breaker Alarm Operation:
1. Provides an alarm during an electrical or manual trip condition.
2. Provides an alarm during an electrical trip condition only.
Circuit Breaker Mounting Kit
Provides components needed to mount a third circuit breaker in the panel. Order kit Part No. 520635.
NOTE! Do not order for first two circuit breakers.

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DIMENSIONS
Refer to Figure 1for overall and mounting dimensions.
Figure 1:
NOTE:
1. ALL DIMENSIONS IN INCHES.
TOP VIEW
RIGHT SIDE VIEW
WIRING ACCESS OPENING
(SAME ON LEFT SIDE)
SEE DETAIL A FOR
OPTIONAL CONDUIT PLATE
FRONT VIEW
18.250
19.000
23.000
16.000
WALL MOUNTING
HOLES IN REAR PANEL
(CUTAWAY VIEW)
5.220
2.250
1.480
17.000
22.250
WIRING ACCESS OPENINGS
(SAME ON BOTTOM)
SEE DETAIL A FOR OPTIONAL
CONDUIT PLATE
6.782
DETAIL A
DETACHABLE CONDUIT PLATE
SIZED FOR 2"
FITTING
SIZED FOR
3/4" FITTING
SEE
DETAIL
B
0.281 x 0.375
SLOT
2.250
0.110
5.000
DETAIL B
DETATCHABLE
MOUNTING ANGLES
P/N 520558
P/N 520559
1.375

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INSTALLER’S CONNECTIONS
See wiring diagram T520406 and schematic diagram SD520406 for all electrical connections. Input and output
wiring can enter the assembly through rectangular openings in the top, bottom, or side panels per site
requirements. First, remove the appropriate cutouts. For applications not requiring conduit, after the cutouts
are removed, a furnished piece of edge guard should be cut to length and installed on all edges of each
opening. For applications that require conduit, two furnished conduit plates can be installed in the appropriate
openings, using supplied hardware.
Refer to Figure 2for lug mounting details. Lugs must be supplied by the installer. Lug mounting hardware
must be supplied by the installer, except for factory furnished hardware at the locations shown in Figure 2.
Two 3/8-16 x 1-1/4” bolts are required for each lug. Recommended torque is 180 inch pounds when a Belleville
washer is used, or 300 inch pounds when a standard lock washer is used.
Figure 2:
INPUT
CONNECTIONS
SEE DETAIL A
LOAD
CONNECTIONS
SEE DETAIL B
ELECTRICAL CONNECTIONS
(FRONT VIEW, COVER REMOVED)
1.000
3.000
DETAIL B
LOAD LUG MOUNTING DIMENSIONS
DETAIL A
INPUT LUG MOUNTING DIMENSIONS
1.50
1.50
1.000
NOTES
CUSTOMER TO PROVIDE LUGS. ALL LUGS TO HAVE CLEARANCE HOLES FOR
3/8" DIA. BOLTS.
CUSTOMER TO PROVIDE LUG MOUNTING HARDWARE EXCEPT AT LOCATIONS
SHOWN SHADED.
DIMENSIONS ARE IN INCHES.
1.
2.
3.

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Section 5930 (RC 12/17)