
Safgard 500 Series
Low Water Cut-Off for Water Boilers or Secondary Low Water Cut-Off on Steam Boilers.
Product Information
- Manual Reset
- Burner Circuit Test Button
- LED Indicating Lights
- Meets ASME CSD-1 Requirements for
- Commercial Water Boilers
Tech Specs
| Specifications | Model 500 | Model 550 |
| Power Consumption | 2 VA | 4 VA |
| Switching Capacity | 50 VA | 5.8 FLA, 34.8 LRA |
| Switch Contacts | SPDT | SPDT |
| Max Pressure | 160 PSI | 160 PSI |
| Model | Part Number | Voltage | Description |
| 500 | 45-500 | 24 VAC | Interrupts power immediately in a low water condition. Burner circuit locks-out if water remains below probe for 30 seconds. Manual reset will not trip due to power failures. Test button checks burner circuit to ensure proper control operation and lock-out function without lowering the water level. Note: Can also be used as a secondary cut-off on steam boilers. |
| 500SV | 45-501 | 24 VAC | SV Models include shorter EL 1214-SV probe suitable for mounting in standard black tee. |
| 550 | 45-550 | 120 VAC | Interrupts power immediately in a low water condition. Burner circuit locks-out if water remains below probe for 30 seconds. Manual reset will not trip due to power failures. Test button checks burner circuit to ensure proper control operation and lock-out function without lowering the water level. Note: Can also be used as a secondary cut-off on steam boilers. |
| 550SV | 45-551 | 120 VAC | SV Models include shorter EL 1214-SV probe suitable for mounting in standard black tee. |
| 550R | 45-552 | 120 VAC | R models include EL 1214-R probe for remote mounting. |
| 550P | 45-553 | 120 VAC | P models include EL 1214-P probe with longer nut for boilers with thicker jackets. |
| 550LSV | 45-5510 | 120 VAC | LSV models include EL 1214-LSV probe. |