ATC Diversified Electronics SUA-440-ASA RELAY; MONITOR/RELAY
Product details
| Management number | 215429945 | Release Date | 2026/04/12 | List Price | $93.83 | Model Number | 215429945 | ||
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ATC Diversified Electronics SUA-440-ASA is a rugged three-phase monitoring relay that guards motors and other loads against costly damage caused by phase loss, under-voltage or phase reversal. Line voltage range: 430 – 480 VAC, 50/60 Hz (phase-to-phase) Protection functions: Phase loss Phase reversal Under-voltage Output: SPDT (1 Form C) electromechanical relay, 10 A @ 240 VAC resistive / 1/3 HP @ 240 VAC Set-point: Screwdriver-adjustable under-voltage dropout; factory calibrated for typical 440 V systems Indicator: Green LED illuminates when all phases present and within tolerance Termination: 8-pin octal plug-in base (industry standard) Mounting: Surface socket, DIN rail or panel via octal base Response time: Instantaneous pick-up; de-energises within one cycle on fault Temperature: –40 °C … +60 °C operating Certifications: UL Recognized, CSA Accepted Housing size: ≈ 2.38 in L × 1.75 in W × 3.10 in H ≈ 0.38 lb Install the SUA-440-ASA ahead of VFDs, pumps, HVAC compressors, conveyors or any three-phase load to prevent downtime from single-phasing or reverse rotation. When voltages return to normal and the phase sequence is correct, the relay automatically resets—no manual intervention required. Need a different voltage? See sister models SUA-380-ASA (380 VAC) and SUA-480-ASA (480 VAC).
- Comprehensive 3-phase protection — shuts equipment down on phase loss, phase reversal or under-voltage in 430-480 VAC systems
- Wide 430-480 VAC range with screwdriver-adjustable dropout; relay energises only when voltages are within spec and ABC sequence is correct
- 10 A SPDT output relay (1 Form C) rated 240 VAC resistive for direct motor-starter or alarm circuits; LED shows “line OK” status
- Plug-in convenience — compact 2.38 × 1.75 × 3.10 in module fits standard 8-pin octal sockets; DIN-rail adapters available for control panels
- UL-Recognized SUA Series quality — USA-built relay protects pumps, compressors & conveyors; drop-in replacement for most 440 V phase monitors
| UPC | 300384220675 |
|---|---|
| Model | SUA-440-ASA |
| Brand Name | Atc |
| Part Number | SUA-440-ASA |
| Contact Type | Normally Open |
| Manufacturer | ATC |
| Mounting Type | DIN Rail Mount |
| Connector Type | Plug-In |
| Current Rating | 10 Amps |
| Operation Mode | Automatic |
| Contact Material | Silver Alloy |
| Specification Met | UL |
| Contact Current Rating | 10 Amps |
| Upper Temperature Rating | 75 Degrees Celsius |
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