Radionix by Bosch B520-C Kit Includes B520 / TR1850 / D8103 / B12
SKU
B520-C
Model No
B520-C
$428.81
Product Highlights
- Provides up to 2A of 12V standby current for Fire or Burglar Applications (4A of Burglary alarm current)
- Supervises up to two 12v 7-18Ah batteries independently for up to 36AH of capacity
- Provides up to 80 hours of standby time
- Uses the Bosch standard TR1850 plug-in transformer
- Easy to read rotary switch addressing

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The Bosch Kit, which includes the B520 Auxiliary Power Supply Module, TR1850 Plug-in Transformer, D8103 Grey Steel Enclosure, and B12 Mounting Plate, offers a comprehensive solution for various fire and burglar alarm applications. This kit is designed to ensure reliable power supply and easy installation within commercial, industrial, and institutional settings. Integration of these quality components ensures seamless communication and consistent performance, making it ideal for robust security systems.
B520 Auxiliary Power Supply Module Features
- Provides up to 2A: Delivers vital 12V standby current for fire or burglar applications, with an impressive 4A available for burglary alarms, ensuring uninterrupted operation during emergencies.
- Independent Battery Supervision: Monitors up to two 12V 7-18Ah batteries independently, allowing for a total capacity of up to 36AH, which enhances system reliability.
- Extended Standby Time: Offers up to 80 hours of standby power, providing assurance that your security system remains functional even during power interruptions.
- Standard Transformer Compatibility: Utilizes the Bosch standard TR1850 plug-in transformer, making it easy to integrate and replace when necessary.
- Convenient Rotary Switch Addressing: Simplifies installation with easy-to-read rotary switches for quick device addressing.
TR1850 Plug-in Transformer Features
- CA Transformer: Designed to handle input of 120 VAC, outputting a reliable 18 VAC, 50 VA, essential for maintaining power to security systems.
D8103 Grey Steel Enclosure Features
- Durable Construction: Grey steel enclosure provides robust protection for critical components, measuring 41 cm x 41 cm x 9 cm (16 in. x 16 in. x 3.5 in.).
B12 Mounting Plate Features
- Essential Mounting Solution: Provides a reliable mounting plate for securing select control panels and devices within the D8103, D8108A, D8109, or BATB Battery Box enclosures.
Detailed Specifications for Bosch Kit
| Feature | Details |
|---|---|
| B520 Standby Current | Up to 2A for Fire/Burglar Applications, 4A for Burglar Alarms |
| Battery Supervision | Supports 2 x 12V 7-18Ah Batteries (Max 36AH) |
| Standby Time | Up to 80 Hours |
| Transformer Model | Bosch TR1850 |
| D8103 Enclosure Dimensions | 41 cm x 41 cm x 9 cm (16 in. x 16 in. x 3.5 in.) |
| B12 Compatibility | For mounting in D8103, D8108A, D8109, or BATB Battery Box |
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