Description

Firstly, the Edwards SIGA-IB4 4-inch Isolator Detector Base is intended for use with Signature Series Sensors. Also, features a built-in line fault isolator for use on Class A circuits. Besides, a detector must be installed for the Edwards Est SIGA-IB4 Isolator Detector Base to operate. The isolator base does not support the SIGA-LED Remote LED. Includes SIGA-TS4 Trim Skirt.

Signature Series detectors mount to North American 1-gang boxes, 3-1/2 inch or 4-inch octagon boxes, and to 4-inch square electrical boxes 1-1/2 inches (38 mm) deep. They mount to European BESA and 1-gang boxes with 60.3 mm fixing centers. See mounting base installation and wiring for more information.

The isolator operates as follows:

• A short on the line causes all isolators to open within 23 msec
• At 10-msec intervals, beginning on one side of the Class A circuit nearest the loop controller, the isolators are closed to provide the next isolator down the line with power
• When the isolator next to the short closes, it reopens within 10 msec.

The process repeats, beginning on the other side of the loop controller.

Features / Specifications

• 4-Inch
• Built-in line fault isolator for use on Class A circuits
• Does not support the SIGA-LED Remote LED