Bosch B520 Auxiliary Power Supply Module 2A, 12V
Special Order: typically 2–6 weeks
Ships directly from the manufacturer. This is an estimated lead time, not a guaranteed delivery date.
Availability can change and lead times may be longer. If your project has a deadline, check with us before ordering.
A member of our team will check with the manufacturer and personally reply by email.
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Key Features
- Delivers dependable 12V auxiliary power to keep security and surveillance devices online during power events
- Supervises dual batteries (up to 36 Ah total) to ensure reliable backup and predictable runtime for alarm systems
- Easy rotary addressing and SDI2 bus connectivity simplify installation and system expansion in commercial environments
- Built-in supervision reports status changes back to the control panel for proactive monitoring and maintenance
- Compact, enclosure-compatible design supports multiple modules per panel for scalable security deployments
Quick Specifications
- Product Model
- B520MP
- Brand Name
- Bosch
- Product Name
- Auxiliary power supply module,2MPA,12MPV
- Product Type
- Power Supply Module
Explore the details
Product information
B520
Overview
Keep critical security and monitoring equipment powered and supervised with the Bosch B520 auxiliary power supply module. This Bosch power supply module provides dependable 12V DC output with up to 2 A of standby current (and up to 4 A of burglary alarm current) so keypads, sensors and other surveillance devices remain operational during power events. The B520 independently supervises up to two 7–18 Ah batteries—supporting up to 36 Ah total—so system owners get predictable backup runtime and easier battery management.
Designed for commercial and industrial alarm systems, the B520 connects via the SDI2 bus and communicates status changes back to the control panel for centralized monitoring. Installer-friendly rotary addressing and compact dimensions make it simple to add auxiliary power where you need it, and the module is compatible with a wide range of Bosch enclosures and GV4 control panels.
Ideal for security integrators specifying reliable auxiliary power for surveillance, fire or intrusion systems. Add the Bosch B520 to your next installation to improve uptime and streamline maintenance—contact your distributor or order today.
Features
- Delivers dependable 12V auxiliary power to keep security and surveillance devices online during power events
- Supervises dual batteries (up to 36 Ah total) to ensure reliable backup and predictable runtime for alarm systems
- Easy rotary addressing and SDI2 bus connectivity simplify installation and system expansion in commercial environments
- Built-in supervision reports status changes back to the control panel for proactive monitoring and maintenance
- Compact, enclosure-compatible design supports multiple modules per panel for scalable security deployments
| General Information | |
|---|---|
| Brand Name | Bosch |
| Manufacturer | Bosch |
| Product Name | Auxiliary power supply module,2MPA,12MPV |
| Product Type | Power Supply Module |
| Product Model | B520MP |
| Packaged Quantity | 1 |
| Manufacturer Part Number | B520 |
| Physical Characteristics | |
| Depth | 1.2" |
| Width | 6.9" |
| Height | 4.5" |
| Power Description | |
| Input Voltage | 12V DC |
| Output Current | 2-4A |
| Miscellaneous | |
| Compatibility | AE1, AE2 Enclosures, B10 Large Control Panel Enclosure, B12 Mounting Plate for the D8103 Enclosure, BATB-40 Enclosure, D2203 Enclosure, D8004 Transformer Enclosure, D8103 Enclosure, D8108A Attack Enclosure, GV4 Series Control Panels (Up to 8 B520 Auxiliary Power Supply Modules per control panel) |
| Country of Origin | US |
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Is this right for your project?
Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- B520
- Manufacturer part:
- B520
How do I confirm compatibility?
Check the specifications and manufacturer documents for your existing system. Send us your model numbers and project requirements if you need help selecting equipment or accessories.
Ask a product specialistWhen will this item ship?
Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.
Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsBosch B520 Auxiliary Power Supply Module 2A, 12V
B520