Kidde Commercial

4-Inch Detector Mounting Base W/ Fault Isolator C/W Trim Skirt

SKU KD-KI-IB4

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The KI-IB4 is the 4-inch version of Kidde's KI Series isolator base, built for jobs where the detector lands on a 4-inch square electrical box instead of a standard 1-gang. It ships with the GSA-TS4 trim skirt so the base finishes clean over the wider box opening.

Why installers use it

  • Automatically isolates a shorted section of a Class A loop within 23 msec, then self-restores once the fault clears
  • Includes the GSA-TS4 trim skirt to cover the mounting ears and surface imperfections around a 4-inch box
  • Wiring terminals stay accessible from the room side after the base is mounted

Where it fits

Use the KI-IB4 wherever a KI Series detector needs Class A isolation and the rough-in is a 4-inch square box — it requires a compatible detector installed to function, and does not support the GSA-LED remote indicator.

Specifications

SKUKD-KI-IB4
BrandKidde Commercial
FunctionClass A line fault isolator base, 4-inch box
Compatible detectorsKI Series smoke, heat, and multisensor detectors
Isolation ResponseOpens within 23 msec on a line fault
MountingNorth American 4-inch square box, includes GSA-TS4 trim skirt
Wire size12-18 AWG
Remote LED supportNot supported

Documents and resources