| Model: | OBS7-6-VA/1P+N |
| Voltage range: | 80-300V |
| Current : | 40A |
| Model: | OBS7-6-VA/1P+N |
| Voltage range: | 80-300V |
| Current : | 63A |
| Model: | OBS7-6-VA/1P+N |
| Voltage range: | 80-300V |
| Current : | 80A |
| Model: | OBS7-6-VA/1P+N |
| Voltage range: | 80-300V |
| Current : | 100A |
Over-Under Voltage & Overcurrent Protector – Auto-Reconnect Relay for Home & Industry
This voltage and current protection relay monitors AC power in real time. It cuts off instantly when detecting over-voltage (>275V), under-voltage (<170V), or overcurrent, and auto-reconnects once conditions return to normal—no manual reset needed.
Built with all-copper internal connections and brand-new relays for strong conductivity and long-term reliability. The exclusive custom housing with embedded logo offers a sleek look and easy brand identification.
Perfect for protecting refrigerators, air conditioners, motors, and industrial equipment from grid fluctuations and current overloads.
Key Features:
Real-time voltage monitoring – Detects anomalies continuously. Trips at over-voltage AC270±5V or under-voltage AC170±5V to protect connected devices.
Auto-reclosing function – Resumes power supply after 30±10 seconds delay once voltage stabilizes. No manual reset required.
Rapid response – Acts within ≤1 second to safeguard sensitive electronics like TVs, refrigerators, and computers from surges or drops.
Durable construction – Built with magnetically held relays and microprocessor control. Low power consumption (≤2W) and high mechanical durability (≥100,000 cycles).
Wide application – Designed for single-phase AC 230V systems. Available in 40A, 63A, 80A, and 100A load capacities for home and commercial use.
Technical Specifications:
| Voltage range | 80-300V |
| Current | 40A/63A/80A/100A |
| Supply terminals | N,L |
| Rated supply voltage | AC 220V |
| Rated frequency | 50/60Hz |
| >U setting range | 130-300V |
| 80-210V | |
| Voltage hysteresis | 5V |
| Overvoltage trip delay | 0.5s |
| Voltage accuracy | <1% |
| Max.operating phase voltage | 350V |
| Max.operating current | 40A/50A/63A/80A/100A |
| Altitude | ≤200m |
| Ambient temperature | -25°℃~+50℃ |
| Permissable relative humidity | ≤50% at 40℃（without condensation) |
| Storage temperature | -25℃~+55℃ |
Perfect for: Refrigerators, air conditioners, motors, pumps, industrial control panels, and whole-home distribution boxes.
We provide customised solutions for professional circuit protection.
Jul 06,2026
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