ATC Diversified Electronics SUA-440-ASA RELAY; MONITOR/RELAY
4.7 (27 items)
Limited Time SaleUS$140.75 cheaper than the new price!!
Free cash-on-delivery fees for purchases over $99
Product details
| Management number | 215429945 | Release Date | 2026/04/12 | List Price | US$93.83 | Model Number | 215429945 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
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 |
Bestseller ranking
Relay Control Module
Customers who viewed this product also viewed
Stove Accessories
Correction of product information
If you notice any omissions or errors in the product information on this page, please use the correction request form below.
Correction Request Form