OutBack Power FLEXWare FLEXmax 100 User manual

FLEXware FLEXmax 100
Rapid Shutdown Solution
Owner’s Manual

About OutBack Power Technologies
OutBack Power Technologies is a leader in advanced energy conversion technology. OutBack products include true
sine wave inverter/chargers, maximum power point tracking charge controllers, and system communication
components, as well as circuit breakers, batteries, accessories, and assembled systems.
Contact Information
Address: Corporate Headquarters
17825 – 59th Avenue N.E.
Suite B
Arlington, WA 98223 USA
Website: http://www.outbackpower.com
Disclaimer
UNLESS SPECIFICALLY AGREED TO IN WRITING, OUTBACK POWER TECHNOLOGIES:
(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR
OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.
(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSS OR DAMAGE, WHETHER DIRECT, INDIRECT,
CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE
USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK.
OutBack Power Technologies cannot be responsible for system failure, damages, or injury resulting from improper
installation of their products.
Information included in this manual is subject to change without notice.
Notice of Copyright
FLEXware FLEXmax 100 Rapid Shutdown Solution Owner’s Manual © 2018 by OutBack Power Technologies.
All Rights Reserved.
Trademarks
OutBack Power, FLEXware, FLEXmax, and the OutBack Power logo are trademarks owned and used by OutBack
Power Technologies, Inc. The ALPHA logo and the phrase “member of the Alpha Group” are trademarks owned and
used by Alpha Technologies Inc. These trademarks may be registered in the United States and other countries.
Date and Revision
October 2018, Revision A
Part Number
900-0239-01-00 Rev A

900-0239-01-00 Rev A 3
Table of Contents
Symbols Used ........................................................................................................................... 4
General Safety .......................................................................................................................... 4
Introduction ..................................................................................................5
Audience ................................................................................................................................... 5
Welcome to OutBack Power Technologies ............................................................................... 5
Product Overview ...................................................................................................................... 5
Features ............................................................................................................................................... 5
Components ......................................................................................................................................... 5
Components .............................................................................................................................. 7 
Combiner .............................................................................................................................................. 7
RSI ........................................................................................................................................................ 8
Functions.....................................................................................................9
Arc Fault Circuit Interruption ..................................................................................................... 9
Detection .............................................................................................................................................. 9
Reset .................................................................................................................................................... 9
Arc Fault Self-Test .............................................................................................................................. 10
Rapid Shutdown ...................................................................................................................... 10
Rapid Shutdown Self-Test .................................................................................................................. 10
Verification .......................................................................................................................................... 10
PV Combiner Disconnect ................................................................................................................... 10
Installation .................................................................................................11
Mounting Information .............................................................................................................. 11
Surge Protector .................................................................................................................................. 11
Connection Information ........................................................................................................... 12
Troubleshooting ..........................................................................................15
LED Indicators ........................................................................................................................ 15
Basic Troubleshooting ............................................................................................................ 15
Specifications .............................................................................................17
Device Specifications .............................................................................................................. 17
Regulatory Specifications ....................................................................................................... 18
Listings ............................................................................................................................................... 18
Compliance ......................................................................................................................................... 18
Definitions ............................................................................................................................... 19

Important Safety Instructions
4 900-0239-01-00 Rev A
READ AND SAVE THESE INSTRUCTIONS!
This manual contains important safety instructions for the Rapid Shutdown Solution product.
Symbols Used
WARNING: Hazard to Human Life
This type of notation indicates that the hazard could be harmful to human life.
CAUTION: Hazard to Equipment
This type of notation indicates that the hazard may cause damage to
the equipment.
IMPORTANT:
This type of notation indicates that the information provided is important to the
installation, operation and/or maintenance of the equipment. Failure to follow the
recommendations in such a notation could result in voiding the
equipment warranty.
NOTE:
This type of notation indicates that the information provided is important to
understanding the operation and limits of the equipment. Failure to follow the
recommendations in such a notation could result in improper or failed operation.
MORE INFORMATION
When this symbol appears next to text, it means that more information is available in other manuals
relating to the subject. The most common reference is to the FLEXware FLEXmax 100 Rapid
Shutdown Solution Quick Start Guide.
General Safety
WARNING: Limitations on Use
This equipment is NOT intended for use with life support equipment or other
medical equipment or devices.
WARNING: Reduced Protection
If this product is used in a manner not specified by product literature, the product’s
internal safety protection may be impaired.
CAUTION: Equipment Damage
Only use components or accessories recommended or sold by OutBack Power
Technologies or its authorized agents.

900-0239-01-00 Rev A 5
Introduction
Audience
This manual provides instructions for installation, setup, and operation of the product. These
instructions are for use by qualified personnel who meet all local and governmental code
requirements for licensing and training for the installation of electrical power systems with AC
and DC voltage up to 600 volts. This product is only serviceable by qualified personnel.
Welcome to OutBack Power Technologies
Thank you for purchasing the FLEXware FLEXmax 100 Rapid Shutdown Solution (RSD-AFCI).
This product is intended to work in conjunction with the FLEXmax 100 charge controller.
It allows a system to meet the 2014 National Electric Code requirements for PV systems.
o NEC 690.12 — Rapid shutdown (allows first responders to safely de-energize controlled conductors)
o NEC 690.15 — DC combiner disconnect (opens all ungrounded circuit conductors from all energy sources)
Product Overview
Features
o End-to-end solution listed to UL1741 with PV rapid shutdown equipment (PVRSE)
o Arc fault circuit interrupter (AFCI) listed to UL1699B with local and remote indication
o Type 3R enclosures rated for indoor or outdoor installation
o Flexible design — install the combiner box vertically, horizontally, or at any intermediate angle;
mount to racking or under the PV array
o Interoperability with compatible third-party PVRSE with a dry contact input
o Combiner box has removable component panel for ease of wire management and for serviceability
o Combiner box has easy-to-install DIN-mount fuses for bi-directional overcurrent protection
o Lockable disconnects on combiner and rapid shutdown boxes
o Communications use building wire commonly available in the field (THHN/THWN-2)
o Ground lug and grounding terminal bus bar for system and equipment grounding
o Internal factory prewiring to save time during installation
Components
The primary component in the RSD-AFCI system is the DC combiner box. This combines up to
six PV source circuits and provides an overcurrent protective device (OCPD) for each circuit.
The combiner provides a local disconnecting means. It also provides a contactor for PV rapid
shutdown functionality to de-energize PV circuits within 10 feet of the PV array.
The other main component is the Rapid Shutdown Initiator (RSI) which works with the combiner
to induce the rapid shutdown function. To power the RSI, an isolated Class 2 DC power supply
(24 Vdc ± 3%, up to 1.5 Adc) must be used.

Introduction
6 900-0239-01-00 Rev A
Figure 1 Example of Residence with RSD-AFCI
Fuses
Contactors
PV Arra
y
≤10 Feet
Utility
Meter
Combiner
RSI
Radian
Battery Bank
oCombiner Box
Contains OCPD, AFCI, main contactors, PV combiner disconnect
Includes local disconnect to de-energize PV circuits within 10 feet of the array (required
distance may vary with local code requirements)
oRapid Shutdown Initiator (RSI)
Contains control circuit for PVRSE
Includes PVRSE disconnect switch
Includes LED indicators for PV connection or disconnection
HOUSE EXTERIOR
HOUSE INTERIOR
ROOF
FM100
AFCI

Introduction
900-0239-01-00 Rev A 7
Components
Combiner
Figure 2 Components of Combiner Box
1
Gasketed Door/
Type 3R
Enclosure
Protects from the
environment 12 Ground Cable
T
erminal
Provides “lay-in” lug for
optional pass-through
ground wire
2
Component
Panel
(Removable)
For ease of wire management
and for serviceability 13 Fuse Holders
PV source overcurrent
protection; fuses provided
by user
3 Bidirectional PV
Contacto
r
Opens PV circuits for local
disconnect or rapid shutdown 14
Combiner
Control
Board
Controls all functions within
the combiner; commands
the contactor
4 Ground Terminal
Bus Ba
r
Provides a means for system
and equipment grounding 15 Arc Fault Self-Test Button
Allows AFCI to be tested without
opening the combiner box
5 Negative
T
erminal Bus Ba
r
Combines negative PV
source circuits 16 PV Input Connections
Connections for positive PV
source circuits
6 PV Positive
Output Terminal
Connection on contactor for
PV positive output circuit 17 Communications Terminals
Communicates with RSI and
additional combiner boxes
7 Internal
Prewiring
Factory-installed for ease of
installation 18 AFCI
ANNUNCIATOR
Illuminates during an arc fault
event or test
8
PV
Combiner
Disconnect
Activates the contactor for
disconnection; can be
padlocked in the OFF position
19 2” EKO
(PV Output)
Accommodates conduit and a
UL 514-compliant fitting for
PV output circuits
9
A
rc Fault
Detection Device
Detects series DC
arc fault events 20 Cable Glands
(PV Input)
Provide waterproof strain relief
for PV source circuits
10 Secu
r
e
Latch
Fastens door;
can be padlocked 21 ½” EKO (optional)
For installation of a third-party
surge protection device
(provided by user)
11 Securing
Scre
w
Secures door in place if
padlock is not used 22
½” and ¾”
(2 ea) EKO
(Communications)
Accommodate conduit and a
UL 514-compliant fitting for
communication wires
NOTE: All external wires are provided by installer
1 2 3
4 5
6 7 8
11
8
10
13 14
16 17 18
12
9 10
15 15
22
20
19 21
18

Introduction
8 900-0239-01-00 Rev A
RSI
Figure 3 Components of RSI
1 Rapid Shutdown switch Initiates the PV Rapid Shutdown function; disconnects main
contactor in combiner.
2 SOLAR ON indicator Green LED indicator; illuminates when DC voltage is present and
Rapid Shutdown switch is in the ON position.
3 SOLAR OFF indicator
Red LED indicator. SOLAR OFF must be illuminated to confirm PV
shutdown. This indicator tells responders that the Rapid Shutdown
switch is in the OFF position to create a “safe” condition.
4 AFCI indicator Red LED indicator; illuminates when receiving an “arc fault” signal
from the combiner.
5 ½” (3) EKO These accommodate conduit and a UL 514-compliant fitting for
communication wires
NOTE:
SOLAR ON does not necessarily indicate that the PV system is active.
See the Troubleshooting section on page 15.
1
5
2 3
5
4
4
5

900-0239-01-00 Rev A 9
Functions
Arc Fault Circuit Interruption
In a PV system, an electrical arc occurs when current bridges a gap between conductive
surfaces. Gaps can occur due to conductor damage, or can be caused by inadequate
system connections.
An “arc fault” is a safety concern for several reasons:
o
Risk of electric shock if the mounting system or other components become electrified.
o Fire hazard due to heat buildup from the current flow.
A series arc occurs across open connections in a single conductor. A parallel arc occurs if the
current bridges multiple conductors that were meant to remain separate. The arc fault circuit
interrupter (AFCI) in the combiner is intended to protect against series arcs.
Detection
The combiner has a dedicated arc fault detection device. The device operates by detecting the
distinct electrical noise created by an arc. The detector has two current transducers, each of
which monitors up to three PV circuits. If an arc is detected, the detector sends a signal to the
main control board in the combiner box.
o
The control board sends a signal to open the combiner’s main contactor. The A
FCI
A
NNUNCIATOR
turns on.
o The control board also sends a signal to the RSI and turns on the A
FCI
indicator.
NOTES:
 This is a simple alarm indicating that an arc fault has occurred somewhere in the system.
If multiple combiners are in use, the RSI cannot specify which combiner triggered it.
 Only the combiner with the detected arc will open its contactor. Any other combiners in
the system will continue to operate.
If an arc fault occurs, see the Troubleshooting section on page 15.
Upon an arc fault event, the system is required by NEC 690.11 to be reset manually.
The manual reset also resets the RSI AFCI indicator and the combiner AFCI ANNUNCIATOR.
Reset
To reset the detector following an arc fault:
1. Turn the PV Combiner Disconnect switch (or the Rapid Shutdown switch) to the O FF position.
The A
FCI A NNUNCIATOR and A FCI indicator should turn off. All combiner box contactors will open.
2. Turn the same switch to the O
N position. The A FCI A NNUNCIATOR and A FCI indicator should
remain off. All combiner box contactors will close.
NOTE:
The Rapid Shutdown switch can be used to reset all combiners at once from a central location.

Introduction
10 900-0239-01-00 Rev A
An arc fault can also be reset by disconnecting all DC power from the system, including
the batteries.
The arc fault detector has been evaluated to have a low instance of nuisance tripping.
However, installing external DC components may increase the risk of nuisance tripping.
Arc Fault Self-Test
The arc fault function can be manually tested. The arc fault self-test mimics the conditions of an
arc fault. The combiner and RSI give the same indications as described in Detection on page 9.
To perform the arc fault self-test:
1. Ensure the system is functioning and all indicators are normal.
2. Push the arc fault self-test button as shown in Figure 2 on page 7.
3. Listen for an audible click as the contactor opens.
4. Check the AFCI ANNUNCIATOR on the combiner. It should be illuminated.
5. Optional (if installed): Check the AFCI indicator on the RSI. It should be illuminated.
Reset the system by the same method as described on page 9.
Rapid Shutdown
The rapid shutdown requirement is intended for firefighters or first responders. In an
emergency, a responder may need to set the PV system in a “safe” (de-energized) state
according to NEC 690.12.
For this reason, the RSI is required to be mounted close to the main utility meter. The RSI
must be easily visible.
The RSI includes a Rapid Shutdown switch that initiates a disconnection of all elements of
the PV system. Opening this switch sends a signal to all combiners to open the main contactor
on each.
Opening this switch also sends a signal to the FLEXmax 100, ordering it to open its contacts.
According to NEC 690.12, the rapid shutdown must reduce the DC circuit to less than 30 Vdc
and 240 VA within ten seconds of initiation.
Rapid Shutdown Self-Test
The rapid shutdown should be tested every six months. This test should be performed as
described in the Verification section.
Verification
Turning the Rapid Shutdown switch to the right (clockwise) puts it in the OFF position. The
SOLAR OFF LED indicator will illuminate upon successful shutdown. If this does not occur, see
the Troubleshooting section on page 15.
PV Combiner Disconnect
Each combiner has a PV Combiner Disconnect switch which is used to turn off a particular
array. This is used if the array or circuit needs to be serviced. The switch can be padlocked in
the OFF position as a “lockout/tagout” procedure to prevent a shock hazard.

900-0239-01-00 Rev A 11
Installation
This section assumes the use of the combiner and the RSI.
o
The combiner box is a required part of all RSD-AFCI systems. All examples in OutBack literature
show one or more combiners in use, including the Quick Start Guide.
o The RSI is required for all RSD-AFCI systems utilizing the PV Rapid Shutdown function.
Mounting Information
The RSD-AFCI combiner box accommodates multiple mounting types.
o
It can be mounted horizontally, vertically, or at any intermediate angle.
o It has slotted mounting feet which allow a variety of positions.
o It is capable of being mounted directly under the PV array if necessary.
o It must be mounted at least 36” (91.4 cm) above the ground.
o The combiner box has a latch which should be padlocked to limit internal access.
o The main disconnect can also be padlocked in the O
FF
position for safety.
NOTE:
If the box is not padlocked, the securing screw must be used to secure the door.
See Figure 2 on page 7.
The RSI has mounting brackets at the top and bottom.
o
It should be installed near the service meter.
o It must be mounted vertically and must be at least 36” (91.4 cm) above the ground.
o The Rapid Shutdown switch can be padlocked in the O
FF
position for safety.
NOTE:
If the structure where the RSI is installed is also equipped with utility service, the structure
must have a permanent sign or plaque reading “PHOTOVOLTAIC [or PV] SYSTEM
EQUIPPED WITH RAPID SHUTDOWN”. This plaque must be reflective, with all letters
capitalized and having a minimum height of ⅜” (9.5 mm) in white on red background.
Surge Protector
An optional surge protection device can be installed in the combiner. A knockout has been
provided to accommodate this type of device. Figure 4 shows the underside of the combiner
and the location of the knockout.
NOTE:
Any installed devices must be liquid-tight to sustain the combiner’s environmental rating.

Installation
12 900-0239-01-00 Rev A
Figure 4 Surge Protector and other Knockout Locations
Connection Information
Combiner
The combiner box can take input circuits from up to six PV subarrays. It provides a single
output which is connected to the DC load center. When its contactors are closed, it sends
power to the load center PV connections, charge controller, and batteries (1). See Figure 5 on
page 13.
o
The combiner’s control board receives power from the RSI (3). It sends rapid shutdown status
information (5) and arc fault status information (4) to the RSI. Both sets of wires must be connected
for correct rapid shutdown operation.
o The communication wires may be run in the same conduit as the PV wire only if the communication
wiring is rated for the highest system voltage.
o Up to six combiners can be used in a single system with a single RSI. The control wires must be
placed in series (“daisy chained”) between combiners.
o Regardless of the number of combiners in use, the last combiner must have a jumper placed across
its sensing terminals to close the circuit. If only one combiner is present, the jumper must be placed
there as shown in the installation instructions.
RSI
The RSI communicates with the combiner box (and with any additional combiners also
connected to it). See Figure 5 on page 13.
o
It receives power (2) from the isolated Class 2 power supply.
o It sends power (3) to the combiner(s) control board.
o It receives arc fault and rapid shutdown status information from the combiner(s) (4) and (5).
o It sends rapid shutdown information to the charge controller (6) and receives status information from
the charge controller in response (7). Both sets of wires must be connected for correct rapid
shutdown operation.
CAUTION: Equipment Damage
The 24-volt conductor is not grounded and is not to be connected to chassis or any
other grounding system.
A. PV Conduit (2”)
B. PV Cable Glands
C. Surge Protector (½”)
D. Communications Conduits (½” and ¾”)
A
B
C
D

Installation
900-0239-01-00 Rev A 13
Figure 5 Block Diagram
4
2
3
1
1
4
2
1 PV Input
2 RSI Power Supply
3 Combiner Power Supply
4 PV Arc Fault
5 PV RSI Safe
6 Rapid Shutdown Output
7 FM100 Status Input
NOTE:
This is not a wiring diagram and does not serve in
place of the installation instructions.
5
5
7
6

Installation
14 900-0239-01-00 Rev A
Optional Connections
RSI
The RSI has several sets of auxiliary terminals. Terminal J6 has a factory-installed jumper.
J3, J4, and J5 do not. The terminals can be wired to the FLEXmax 100, or possibly other
devices, to send or receive status messages.
Figure 6 Interface Connections
J3
J4
J5
J6
Not Used
Jumper
(see below)
AUX RSI COMMAND/STATUS OUTPUT
Dry contacts which report RSI status.
The J3 contacts must be connected to
the RAPID SHUTDOWN terminals on
the FLEXmax 100.
 Open: Rapid Shutdown (SOLAR OFF)
 Closed: Normal (SOLAR ON)
 30 Vdc or 15 Vac @ < 2 A
AUX RSI SAFE STATUS INPUT
“Safe” status circuit input. The J4 terminals must be connected
to the AUX terminals on the FLEXmax 100.
 Open (all connections): Not “Safe”
 Closed (any connection): “Safe” (Rapid Shutdown)
IMPORTANT:
 J4 must be connected. With no connections, the SOLAR OFF (“safe”)
indicator will not light even if the Rapid Shutdown switch is OFF.
 J6 must have the jumper installed (or another source of continuity).
With no connections, the system will enter continuous Rapid Shutdown.

900-0239-01-00 Rev A 15
Troubleshooting
LED Indicators
Table 1 Indicators
Box Indicator
W
hen Lit Notes
RSI S
OLAR
O
N
(green)
DC voltage present in
system. Rapid Shutdown
switch O
N
.
May be lit at the same time as
A
FCI
.
Despite the label, S
OLAR
O
N
does not indicate that
the PV system is active. It will illuminate even if PV
is completely disconnected or if an arc fault is
present. The name indicates to responders that this
control does not shut down other parts of the
electrical system. It only affects PV-related devices.
RSI S
OLAR
O
FF
(red)
System is in “safe” mode.
Rapid Shutdown switch O
FF
.
This indicator should never be lit at the same time as
any other.
RSI
A
FCI
(red)
Arc fault condition or
deliberate arc fault self-test.
Accompanied by at least one
A
FCI
A
NNUNCIATOR
(on
one or more combiners). May be lit at the same time
as S
OLAR
O
N
.
Combiner
A
FCI
A
NNUNCIATOR
(red)
Arc fault condition or
deliberate arc fault self-test.
Accompanied by
A
FCI
on RSI. Will not be
accompanied by A
FCI
A
NNUNCIATOR
s in other
combiners unless other arc faults are present.
May be lit at the same time as S
OLAR
O
N
.
Basic Troubleshooting
The following table describes known situations which can cause unexpected behavior in
the RSD-AFCI. The table also describes all known situations which will cause the LED
indicators to light.
NOTE:
When a true arc fault event occurs, the RSD-AFCI disconnects the PV by design.
RSD-AFCI troubleshooting is not required. However, it may be necessary to troubleshoot
and locate the cause of the problem. Diagnosis of an arc fault is not covered under the
scope of this document. See Table 2.
WARNING: Shock Hazard
An arc fault causes the AFCI to disconnect that section of the PV system to prevent fire or
shock injuries. These hazards may still exist on the array itself if physical troubleshooting is
required. Make certain to cover the PV modules and take any other necessary steps to
reduce risk.
See the next page for a table of basic troubleshooting steps.

Troubleshooting
16 900-0239-01-00 Rev A
Table 2 Troubleshooting
Symptom Possible Cause Possible Remedy
AFCI indicator and
combiner AFCI
ANNUNCIATOR lit.
Arc fault event.
NOTE: The SOLAR ON indicator remains lit.
If an arc fault is present, the shutdown of the
system constitutes correct operation. The
RSD-AFCI does not need troubleshooting.
Investigate any potential causes throughout the
PV system.
Arc fault self-test button was pressed. Turn combiner disconnect switch or Rapid
Disconnect switch off, then on.
AFCI indicator lit.
Combiner AFCI
ANNUNCIATOR
not lit.
Arc fault in another combiner (multiple
combiner system only).
NOTE: The SOLAR ON indicator remains lit.
Check all combiners. An arc fault will activate the
AFCI ANNUNCIATOR in that combiner only.
Missing connection or loose jumper in RSI. Check J6 in RSI (see page 14).
SOLAR OFF
indicator and
another indicator
both lit.
RSI miswired. Check all wiring between RSI and combiner.
SOLAR ON
indicator lit, but
charge controller
does not register
PV input.
Combiner disconnect switch turned off. Turn on combiner disconnect switch.
SOLAR ON
indicator lit, but
charge controller
registers reduced
PV input.
Array wiring error or poor connection.
Check all PV wiring to combiner. Use DVM to
confirm voltage of each subarray at combiner
input terminals.
Fuses blown in combiner box. Check all fuses.
No indicators lit.
Battery or DC source is disconnected. Loss
of combiner box control voltage caused the
PV contactor to disconnect. System is not
in the formal “safe” condition, although PV
array is still forced to be off.
Check all power supply fuses. Check power
supply terminals.
SOLAR OFF
indicator does not
light when Rapid
Shutdown switch
is turned off.
Battery or DC source is disconnected.
System is not in the formal “safe” condition,
although PV array is still forced to be off.
Check all power supply fuse. Check power
supply terminals.
Missing connection in RSI. Check J4 in RSI (see page 14).

900-0239-01-00 Rev A 17
Specifications
Device Specifications
Table 3 Electrical and General Specifications
Device Combiner Box Rapid Shutdown Initiator
Designation FWPV6-FH600-SDA RSI
Description 6-string combiner box with PV rapid shutdown, AFCI,
and manual disconnect
Initiates a PV rapid shutdown event; provides indication
for PV status
Compatibility Can accommodate 6 PV input strings per combiner Can control up to 6 combiner boxes
Terminals:
Input #14 to #8 AWG (2.5 to 10 mm2) (Cable glands) #24 to #16 AWG
(0.25 to 1.5 mm2)
Output #14 to 2/0 AWG
LED indicators AFCI ANNUNCIATOR
 SOLAR ON
 SOLAR OFF
 AFCI
Overcurrent
Protection (6) 600 Vdc DIN rail fuse holders N/A
Voltage Rating 600 Vdc 24 Vdc ± 3%
Total Current
(maximum) 64 Adc N/A
DC input 24 Vdc ± 3% 24 Vdc ± 3%
Normal
Operation
Power Draw
0.10 Adc 0.06 Adc
Table 4 Mechanical and Environmental Specifications
Device Combiner Box Rapid Shutdown Initiator
Enclosure
Material Powder-coated aluminum
Enclosure
Rating UL Type 3R UL Type 3R
Operating
Temperature –25 to 60°C –25 to 60°C
Security
 Lockable
 Switch is lockable in OFF position Switch is lockable in OFF position
Mounting Vertical to horizontal (adjustable feet) Vertical only (brackets)
Knockouts 2”, ½”, and ¾” ½”
Dimensions
(H x W x D)
15.5 × 19.5 × 4.5”
(39.4 × 49.5 × 11.4 cm)
14.1 ×7.3 × 3.75”
(30.5 × 17.8 × 12.7cm)
Weight ~ 12 lb (5.4 kg) ~ 4 lb (1.8 kg)

Specifications
18 900-0239-01-00 Rev A
Regulatory Specifications
Listings
This product carries a listing report by UL. It is listed to the following standards:
o UL 1741 — Inverters, Converters, Controllers and Interconnection System Equipment for Use
With Distributed Energy Resources (2nd Edition, 1/28/2010, with revisions through 3/23/2016)
with PV Rapid Shutdown
o UL1699 — Standard for Arc-Fault Circuit Interrupters (2nd Edition, revised 11/08/2013)
o UL1699B — Photovoltaic (PV) DC Arc-Fault Circuit Protection (Issue: 1/14/2013)
o CSA C22.2 — General Use Power Supplies, No. 107.1-01 Issue: 2001/09/01 Ed:3 (R2011)
with PV Rapid Shutdown
Compliance
This product has been tested to comply with the following standards:
o FCC Part 15, Class B
FCC Information to the User
This equipment has been tested and found to comply with the limits for a Class B digital device when
powered by a DC source, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
 Reorient or relocate the receiving antenna.
 Increase the separation between the equipment and the receiver.
 Consult the dealer or an experienced radio/TV technician for help.

Specifications
900-0239-01-00 Rev A 19
Definitions
The following is a list of initials, terms, and definitions that may be used in conjunction with
this product.
Table 5 Terms and Definitions
Term Definition
AFCI Arc Fault Circuit Interrupter
Combiner An enclosure which combines multiple PV circuits, using individual circuit protection
Controlled conductor A section of wire between the combiner and either the RTB or the PVRSE device
CSA Canadian Standards Association; establishes Canadian national standards and the
Canadian Electrical Code, including C22.1 and C22.2
Dry contact A relay contact with no source voltage; switches the continuity to be used by an
external device
DVM Digital Voltmeter
EKO Electrical Knockout
Grounded Conductor The DC conductor (negative or positive) which is mechanically bonded to ground in
one place
NEC National Electric Code
PVRSE Photovoltaic Rapid Shutdown (System) Equipment
RSI Rapid Shutdown Initiator
GSLC GS Load Center; the DC and AC load center for Radian series inverters
UL Underwriters Laboratories; refers to a set of safety standards governing electrical products

900-0239-01-00 Rev A
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