The Siemens PSC-12 is a 12-amp power supply and battery charger for the Siemens FireFinder XLS fire alarm control panel. Siemens catalogs this module as part number 500-033340. As a result, both numbers are commonly seen on parts lists for FireFinder XLS service work.
The PSC-12 supplies regulated 24 VDC to FireFinder XLS system components and supports standby battery charging. In addition, it provides power for notification appliance circuits and accessory cards in the panel chassis. Therefore, the module is central to the panel’s continued operation during both normal and alarm conditions.
Where the Siemens PSC-12 Fits Best
FireFinder XLS panels are widely deployed in large commercial, institutional, and industrial buildings. First, confirm the existing power supply module before ordering a replacement. Then, verify the panel’s documented load against the PSC-12’s 12-amp rating. Specifically, larger installations sometimes require multiple power supplies or the larger 24-amp module.
The PSC-12 is a board-level replacement. However, installation requires a qualified fire alarm technician familiar with the FireFinder XLS platform. Therefore, do not attempt service without proper Siemens training and panel documentation.
Key Features
- 12-amp, 24 VDC power supply and battery charger
- Designed specifically for the Siemens FireFinder XLS platform
- Genuine Siemens OEM replacement module
- Supports notification appliance circuit power and standby battery charging
- Board-level replacement for service or end-of-life refresh
Specifications
- Siemens part numbers: PSC-12 / 500-033340
- Output: 12 A at 24 VDC
- Function: Power supply and battery charger
- Panel platform: Siemens FireFinder XLS
- Type: OEM replacement module (board-level)
Order from Life Safety Consultants
FireFinder XLS power supply replacements are time-sensitive — a failed unit can put the panel into trouble within hours. Furthermore, lead times on Siemens fire alarm electronics can vary widely. Our team can help confirm availability and pair the PSC-12 with the right battery sizing if a refresh is needed at the same time.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 8 lbs |
|---|---|
| Dimensions | 12.5 × 6.5 × 5 in |
| Condition | New |
| Part Type | Power Supply |
| Manufacturers | Siemens |
| Compatible Panels | FireFinder XLS |
| Cross Reference | FP2012-U1 |
| Specification | Part # 500-092xxx series |
