• SS&Si
  • Kidde Commercial
  • Kidde | Intelligent Addressable Polarity Reversal Relay Module, Form C Dry Contact, UIO Mount | GSA-MCRR
Intelligent Addressable Polarity Reversal Relay Module, Form C Dry Contact, UIO Mount
Kidde Commercial

Intelligent Addressable Polarity Reversal Relay Module, Form C Dry Contact, UIO Mount

SKU KD-GSA-MCRR

New to SS&Si? Apply for a dealer account
Share
  • Fast shipping from four branches
  • 30-day returns on unopened products
Questions? Call us 866-364-0030The SS&Si dealer team

The GSA-MCRR adds a polarity reversal relay output to any Kidde intelligent SLC loop without pulling extra wire. One Form C dry relay contact handles either control relay or polarity reversal functions depending on configuration, giving installers flexibility to control external appliances, shut down equipment, or reverse NAC circuit polarity from the panel.

Built for the commercial fire installer

This module mounts in a standard UIO backbox and addresses onto the SLC via rotary switches - same workflow as every other Kidde intelligent device on the loop. Class A-B circuit operation keeps the loop functional even with a single open fault. All circuits are power-limited. Ground fault detection pinpoints wiring problems to the individual module, cutting troubleshooting time on large loops.

Key features

  • Polarity reversal or control relay operation: one Form C dry contact, configurable for the job
  • UIO mount: drops into standard North American 4-inch square boxes - no special hardware
  • SLC loop powered: no separate power supply required at the module
  • Ground fault detection: isolates wiring faults to the module level for faster troubleshooting
  • Class A-B operation: supports both Class A and Class B SLC circuit configurations
  • Power-limited circuits: all circuits power-limited per code requirements

System requirements

Requires a Kidde intelligent fire alarm control panel with available SLC capacity. Compatible with 64-point and 1000-point Kidde panels. Mounts in a 4-inch square x 2-1/2 in. deep box (1-gang or 2-gang) or standard 4-inch square box 1-1/2 in. deep. Wire with 12, 14, 16, or 18 AWG (16 and 18 AWG preferred).

Specifications

SKUKD-GSA-MCRR
BrandKidde Commercial
Form factorUIO mount relay module
FunctionPolarity reversal relay / control relay
Relay typeForm C, programmable
Contact rating (DC)30 VDC, 2A
Contact rating (AC)125 VAC, 0.5A resistive (60W / 62.5 VA max.)
CommunicationSLC addressable (rotary switches)
Power inputSLC loop powered
Current drawStandby 125 µA, Activated 125 µA
Communication line voltage20V peak-to-peak maximum
Ground fault impedance10 kΩ
Device address range01-64 (64-point panel), 01-127 (1000-point panel)
Compatible electrical boxes4" square x 2-1/2" deep (1 or 2 gang), 4" square x 1-1/2" deep
Wire size12, 14, 16, or 18 AWG (16 and 18 AWG preferred)
Operating temp32 to 120°F (0 to 49°C)
Operating humidity0 to 93% RH, noncondensing at 90°F (32°C)
Storage temp-4 to 140°F (-20 to 60°C)
Circuit classificationClass A-B, all circuits power-limited

Documents and resources

FAQs

What does the GSA-MCRR do?
Provides one Form C dry relay contact configurable as a control relay or polarity reversal relay. Controls external appliances, shuts down equipment, or reverses NAC circuit polarity from the panel.
What electrical box does this mount in?
Standard North American 4-inch square x 2-1/2 in. deep box (1-gang or 2-gang), or a standard 4-inch square box 1-1/2 in. deep. Same UIO mounting as other Kidde intelligent modules.
What Kidde panels is this compatible with?
Compatible with Kidde intelligent fire alarm control panels with SLC loop capacity, including both 64-point and 1000-point panel configurations.
What are the relay contact ratings?
30 VDC at 2A, or 125 VAC at 0.5A resistive load (60W / 62.5 VA maximum). Pilot duty rated, Form C contact.
Does it require a separate power supply?
No. The module draws power from the SLC loop. Standby and activated current draw is 125 µA.
What wire sizes can I use?
12, 14, 16, or 18 AWG. Kidde recommends 16 and 18 AWG as preferred wire sizes for SLC connections.
All Kidde Commercial