The Edwards 1B3-125 is a 125-watt audio power amplifier for fire alarm voice and audio systems. It drives speaker circuits during an emergency.
The amplifier delivers 125 watts of continuous (RMS) power. In addition, it supports both 25 V and 70 V speaker outputs. As a result, it adapts to many distributed audio layouts.
Edwards 1B3-125 Design
The unit mounts in a standard 19-inch rack. Also, it includes circuitry for 24 VDC battery backup. Therefore audio output can continue during a primary power loss.
Built-in protection guards the amplifier in service. Specifically, an electronic circuit handles overloads and shorted outputs. A thermal overload circuit then opens power if the unit overheats. Both protection circuits are self-restoring.
Specifications
- Type: audio power amplifier for fire protective signaling
- Power output: 125 watts continuous (RMS)
- Output voltage: 25 V or 70 V
- Backup: 24 VDC battery backup circuitry
- Power source: 120/240 V, 50/60 Hz, or 24-28 VDC
- Mounting: standard 19 in (483 mm) rack
- Protection: self-restoring electronic and thermal overload
- Listings: UL 1711 and UL 1480; ULC listed
Application
The 1B3-125 is used in banked amplifier systems. Furthermore, those systems combine several amplifiers for larger emergency audio installations.
Order or Get Application Help
Life Safety Consultants stocks genuine replacement parts and offers application support. To order or get help, call 1-888-557-0558. You can also email sales@lifesafetycom.com.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 26.5 lbs |
|---|---|
| Dimensions | 22 × 11 × 8.5 in |
| Condition | New |
| Manufacturers | Edwards |
| Part Type | Strobe |
