The Simplex 636-341 is a power supply board for Simplex 4020 and 4100-series fire alarm control panels. First, the board mounts inside the panel cabinet. Then, it supplies regulated DC voltage to the connected Group 2 boards.
Service technicians order the 636-341 when replacing a failed power supply during panel service. As a result, the panel returns to operation without requiring a full cabinet swap.
Simplex 636-341 Compatibility
- Simplex 4020 control panels
- Simplex 4100 control panels (original series — confirm against your specific 4100 revision)
- Group 2 board configurations
Ordering Notes
- Confirm the panel revision and the board it pairs with — the 4100 family spans multiple generations with different power supply assignments.
- Installation should follow the Simplex 4020/4100 service manual for the specific panel revision.
- Verify the existing wiring and connector type before ordering.
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 |
| Part Type | Power Supply |
| Manufacturers | Simplex |
| Compatible Panels | 4020, 4100 |
| Dimensions | 12.5 x 6.5 x 5 in, Weight: 8 lbs, Panel compatibility: 4020 and 4100 series (Group 2 boards only) |







