Description
Protect your HVAC or refrigeration equipment from dangerous overpressure events with the Supco SMR440, a rugged high-pressure safety switch designed to cut power at 440 PSI and require manual reset—ideal for abundant reliability and control.
Features:
- ¼” SAE 45° female flare fitting with valve core depressor
- Excellent set point repeatability/stability
- Life at rated load: 100,000 cycles
- Manual reset high pressure
- Rated Voltage 24/120/240 VAC @ 50/60 Hz
- Small size and light weight for direct mounting
- Snap acting stainless steel hermetically sealed sensor (SHP, SLP, and SFC)
- Wire is 18 AWG, 18″ long
Specifications:
- Maximum FLA: 5.8 Amps @ 120VAC
- Maximum FLA: 2.9 Amps @ 240VAC
- Maximum LRA: 34.8 Amps @ 120VAC
- Maximum LRA: 17.4 Amps @ 240VAC
- Ambient Temperature: -31°F to 149°F (-35°C to 65°C)
- Fluid Temperature: -31°F to 275°F (-35°C to 135°C)
- Burst Pressure: 1521 PSI
- Open PSI: 440 PSI
- Tolerance: +/- 15 PSI
- DC Voltage: 6Vdc/12Vdc/36Vdc










