B520-C BOSCH

Product Overview

The B520 Auxiliary Power Supply Module is a supervised expansion power supply that connects to compatible control panels via the SDI2 bus. Designed for industrial, commercial, and institutional facilities, the B520 monitors and communicates all status changes to the control panel for reliable system operation. 

Key Features

• Provides up to 2 A of 12 V standby current for fire or burglar applications (4 A for burglary alarm current)
• Independently supervises up to two 12 V, 7–18 Ah batteries for a total of up to 36 Ah
• Provides up to 80 hours of standby time
• Easy-to-read rotary switch addressing
• Compatible with Bosch standard TR1850 plug-in transformer