Notifier B224BI-WH Intelligent Isolator Base Fire Alarm SLC Loop 25-Device

Notifier · Fire Alarm

Notifier B224BI-WH Intelligent Plug-in Isolator Detector Base, White

Part number / SKU
B224BI-WH
  • Plug-in isolator detector base
  • Intelligent addressable systems
  • 4 in square
  • 15 to 32 VDC

Works with: B224BI-IV (ivory version), B224BI (earlier model replaced) Confirmed by the manufacturer

$62.88

In stock

Warranty
Manufacturer warranty

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Overview

What it is and who it is for

The B224BI-WH is a white plug-in isolator detector base for intelligent addressable fire alarm systems. When a short occurs on the communication loop, it isolates the shorted section so the rest of the loop keeps working, then restores the loop automatically once the short is removed. Up to 25 addressable devices may be installed between isolator bases.

The base runs on 15 to 32 VDC, draws 450 uA max in standby and 15 mA max when isolating, and measures 6.85 in in diameter and 1.61 in high. Its mounting plate fits 4 in square boxes with or without plaster ring, 4 in and 3-1/2 in octagon boxes and single- and double-gang boxes. Signal wiring should be 18 AWG or larger, and wire up to 12 AWG can be used.

A breakable tab turns on a tamper-resist feature that requires a tool to remove the detector head. The B224BI-WH and B224BI-IV replace the earlier B224BI and are functionally the same.

  • Best for: adding short circuit isolation at detector locations on intelligent addressable signaling line circuits.
  • System fit: listed compatible intelligent fire alarm control panels and compatible plug-in detector heads (see System Sensor base/sensor cross reference).
  • Important to know: installation and programming must be done by a qualified fire alarm technician in line with local code and the panel manufacturer's instructions.

Why teams choose it

Built for fire alarm systems

  • Loop protection

    isolates a shorted loop section so the rest of the loop keeps working.

  • Automatic restore

    reconnects the loop once the short is removed.

  • Segment sizing

    up to 25 addressable devices between isolator bases.

  • Wide box fit

    mounts to 4 in square, octagon and single- or double-gang boxes.

Specifications

Technical specifications

General
Brand Notifier (System Sensor)
Model B224BI-WH
Device Type Plug-in isolator detector base
Addressing Intelligent addressable systems
Isolation Isolates shorted loop section; automatic restore
Devices Between Isolators Up to 25 addressable devices
Mount Type 4 in square
Mount Type Detail With or without plaster ring; 4 in octagon, 3-1/2 in octagon, single-gang, double-gang box
Class A Wiring Optional wiring shown in installation instructions
Tamper Resist Breakable tab; tool required to remove head
Electrical
Operating Voltage 15 to 32 VDC
Standby Current 450 uA max
Isolation Current 15 mA max
Wire Gauge 18 AWG minimum signal wiring; up to 12 AWG
Physical
Diameter 6.85 in (17.4 cm)
Height 1.61 in (4.1 cm)
Color White
Environmental
Operating Temperature Per installed sensor (Base/Sensor Cross Reference Chart)
Operating Humidity 10% to 93% RH, non-condensing