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Littelfuse 460-OEM 3-Phase Voltage Monitor, 190-480V Adj
$2,029$2,434 (-17%)
Littelfuse 460-OEM 3‑Phase Voltage Monitoring Relay, 190–480 VAC input, pilot duty 480 VA @240V and 10 A general-purpose contacts. Genuine Littelfuse product with fast delivery from Batam across Indonesia and Southeast Asia.
The Littelfuse 460-OEM is a 3‑phase voltage monitoring relay (Commercial Reference 460-OEM) with a wide input range of 190–480 VAC. Designed to detect under‑ and over‑voltage, phase loss and voltage unbalance, it provides adjustable trip thresholds and delays to protect motors, contactors and three‑phase equipment. With pilot‑duty and general‑purpose contact ratings, this voltage monitoring/protection relay is suitable for motor control panels, generator/transfer‑switch supervision and industrial automation requiring reliable voltage protection.
Key Features
- Wide input range 190–480 VAC for flexible three‑phase monitoring
- Adjustable under/over and unbalance trip points with ±1% accuracy
- Pilot duty 480 VA @240 V (B300) plus 10 A general‑purpose contact capability
- Adjustable restart delay (1–500 s) and configurable trip delays; 1 s fixed delay for single‑phase faults >25% unbalance
- Compact DIN‑rail mounting with IP20 / NEMA 1 (finger safe) protection
- Low input power consumption (~6 VA) and standard screw termination for 12–20 AWG wire
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | 460‑OEM |
| Component | Voltage Monitoring Relay (3‑Phase) |
| Relay Mounting | DIN Rail |
| Input / Coil Voltage Rating | 190–480 V AC |
| Frequency | 50/60 Hz |
| Pilot Duty Rating | 480 VA @ 240 V (B300) |
| General‑Purpose Contact | 10 A @ 240 V |
| Maximum Input Power | ≈ 6 VA |
| Undervoltage Trip / Reset | Trip 90% / Reset 93% |
| Overvoltage Trip / Reset | Trip 110% / Reset 107% |
| Trip Point Accuracy | ±1% |
| Voltage Unbalance Trip | Adjustable 2–8%; single‑phase faults >25% have 1 s fixed delay |
| Trip Delay | Adjustable for under/over and unbalance conditions |
| Restart Delay | Adjustable 1–500 s |
| Terminals / Wire | Stranded or solid, 12–20 AWG; torque 6 in‑lbs |
| Humidity | 10–95% (non‑condensing) |
| Protection Class | IP20 / NEMA 1 (finger safe) |
Applications
Typical uses include protection of three‑phase motors and motor starters against under/over‑voltage and phase loss; monitoring generator sets and automatic transfer switches; safeguarding pumps, compressors and HVAC three‑phase loads from voltage unbalance; and integration into industrial control panels, conveyors and process equipment for reliable voltage supervision.
We supply genuine Littelfuse products through authorized channels. Based in Batam, we deliver fast across Indonesia and Southeast Asia with competitive pricing. Contact us to request a quotation or confirm stock and lead time for part 460‑OEM.
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