Bosch B520-B Auxiliary Power Supply B520 Kit with B10 Enclosure, SDI2

Keep critical security and monitoring equipment running when it matters most with the Bosch B520-B auxiliary power supply. This Bosch power supply module delivers dependable 12 V/2 A standby power and supports independent supervision of two 12 V, 7–18 Ah batteries for up to 36 Ah total capacity — providing the redundancy and runtime commercial security and fire alarm installations require. Housed in a durable B10 steel enclosure, the B520-B is designed for easy installation in cabinets or racks and includes clear switch addressing and SDI2 compatibility to speed deployment and ongoing servicing. The regulated 11.5–12.2 V DC output protects sensitive surveillance cameras, access control panels and intrusion sensors from voltage fluctuations, while supervised battery inputs reduce false alarms and maintenance visits. Ideal for integrators, facilities managers and security professionals who need a compact, reliable power solution that integrates with monitoring and alarm systems. Specify the Bosch B520-B for your next security, fire or surveillance project — contact your distributor or add to your system design today.

• Reliable continuous power to keep security and surveillance systems online during mains interruptions
• Independent supervision of two 12 V batteries for up to 36 Ah total capacity, simplifying battery maintenance and redundancy
• Compact B10 enclosure with steel construction for secure, rack- or cabinet-ready installation in commercial environments
• Clear, easy-to-read switch addressing and SDI2 compatibility for faster commissioning and integration with monitoring systems
• Built-in 12 V/2 A output with precise regulation to protect fire, burglar and access control devices from voltage-related faults