Bosch B520-C Auxiliary Power SDI2 Supply Kit, Includes TR1850, D8103, B12, B520
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.
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Key Features
- Keeps security and surveillance systems online with supervised 12 V auxiliary power, providing up to 2 A standby and 4 A alarm output
- Provides extended backup with independent support for two 12 V 7–18 Ah batteries (up to 36 Ah) and up to 80 hours standby for critical monitoring
- SDI2 supervision reports AC, battery and device status to the control panel for proactive maintenance and reduced false alarms
- Quick installation with Bosch TR1850 plug-in transformer and easy-to-read address switches to minimize technician time and system downtime
- Flexible AUX and SDI2 outputs power keypads, PIR detectors and access control devices for seamless integration with fire, burglar and access control systems
Quick Specifications
- Product Model
- B520-C
- Brand Name
- Bosch
- Product Name
- B520-C Auxiliary power supply kit w/D8103, SDI2
- Product Type
- Power Accessory Kit
Frequently Bought Together
Bosch B520-C Auxiliary Power SDI2 Supply Kit, Includes TR1850, D8103, B12, B520
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Product information
B520-C
Overview
Ensure uninterrupted protection for your facility with the Bosch B520-C auxiliary power supply kit — designed to deliver reliable, supervised power to fire, burglar and access control systems. This Bosch power supply kit provides up to 2 A of 12 V standby current (and 4 A for burglary alarm output) and maintains system voltage between 11.50–12.20 V DC to keep sensors, keypads and communicators functioning during power events.
Engineered for commercial and institutional security installations, the B520-C supports two 12 V 7–18 Ah batteries independently (up to 36 Ah) and can offer up to 80 hours of standby time, reducing false trouble reports and costly service calls. Supervised SDI2 communication continuously reports AC status, battery health and device operation back to the control panel for improved monitoring and faster diagnostics. Installation is streamlined with the Bosch TR1850 plug-in transformer and simple address switches, saving time on-site.
Ideal for surveillance, alarm and monitoring applications, the B520-C delivers a dependable, service-friendly power foundation. Order the Bosch B520-C today to safeguard uptime and simplify maintenance for your security systems.
Features
- Keeps security and surveillance systems online with supervised 12 V auxiliary power, providing up to 2 A standby and 4 A alarm output
- Provides extended backup with independent support for two 12 V 7–18 Ah batteries (up to 36 Ah) and up to 80 hours standby for critical monitoring
- SDI2 supervision reports AC, battery and device status to the control panel for proactive maintenance and reduced false alarms
- Quick installation with Bosch TR1850 plug-in transformer and easy-to-read address switches to minimize technician time and system downtime
- Flexible AUX and SDI2 outputs power keypads, PIR detectors and access control devices for seamless integration with fire, burglar and access control systems
| General Information | |
|---|---|
| Brand Name | Bosch |
| Manufacturer | The Bosch Group |
| Product Name | B520-C Auxiliary power supply kit w/D8103, SDI2 |
| Product Type | Power Accessory Kit |
| Product Model | B520-C |
| Manufacturer Part Number | B520-C |
| Technical Information | |
| Output Voltage | 11.50-12.20V DC |
| Physical Characteristics | |
| Color | Blue, Green |
| Dimensions | 11.43 cm x 17.62 cm x 2.9 cm (4.5 in x 6.94 in x 1.15 in) |
| Power Description | |
| Output Current | 2-4A |
| Miscellaneous | |
| 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-C
- Manufacturer part:
- B520-C
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-C Auxiliary Power SDI2 Supply Kit, Includes TR1850, D8103, B12, B520
B520-C