3-Phase Voltage Protector 63A 380V DIN Rail | Auto Recovery
3-Phase Voltage Protector 63A 380V DIN Rail | Auto Recovery
3-Phase Over & Under Voltage Protector – 63A 380V DIN Rail Mount
Keep your three-phase electrical equipment safe with the CKCTINNER YHSP-3 Three-Phase Voltage Protector. This CE-certified DIN rail device monitors your circuit voltage in real time and instantly cuts power when it detects over-voltage or under-voltage conditions — then automatically restores power once the voltage returns to a safe range. No manual reset needed.
Why You Need This Voltage Protector
Voltage irregularities can silently damage motors, HVAC systems, industrial machinery, and other three-phase equipment. This adjustable protector acts as an always-on guardian, reacting in as little as 0.1 seconds to disconnect the load before any harm is done.
Key Protection Functions
- Over-Voltage Protection – Adjustable trip point: 230V–300V (default 270V)
- Under-Voltage Protection – Adjustable trip point: 140V–210V (default 170V)
- Automatic Recovery – Reconnects automatically when voltage normalizes (recovery delay: 1–500 s, default 30 s)
- Live Voltage Display – Built-in voltage measurement for at-a-glance monitoring
- 3-Phase Unbalance Protection – Trips on phase imbalance of 5–95 V (adjustable / defeatable)
- Phase Sequence Protection – Guards against reverse-phase wiring
- Neutral Line Break Protection – Detects and responds to a broken neutral
- Phase Failure Protection – Trips if one or more phases drop out entirely
Full Technical Specifications
| Model | YHSP-3 (TOVPD3) |
| Rated Voltage | 3 × 230V / 400V AC 50/60 Hz (380V system) |
| Max Load Current | 63 A |
| Over-Voltage Trip Range | 230V–300V (default 270V); Recovery: 225V–295V (default 265V) |
| Under-Voltage Trip Range | 140V–210V (default 170V); Recovery: 145V–215V (default 175V) |
| Protection Action Time | 0.1–30 seconds (default 1 s) |
| Power-On Delay | 1–500 seconds (default 10 s) |
| Recovery Delay | 1–500 seconds (default 30 s) |
| Installation | Standard 35 mm DIN Rail |
| Certification | CE |
| Country of Origin | Made in China |
Ideal Applications
- Industrial motors and compressors
- HVAC and refrigeration systems
- Commercial lighting and machinery
- Pumps, elevators, and conveyor systems
- Any three-phase 380V electrical installation
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Frequently Asked Questions
Q: What is the maximum load current supported by this 3-phase voltage protector?
A: This CKCTINNER YHSP-3 voltage protector supports a maximum load current of 63A at 380V (3 × 230V / 400V AC), making it suitable for industrial and commercial three-phase equipment up to that rating.
Q: Does this device recover automatically after a voltage fault, or does it need to be reset manually?
A: The protector features fully automatic recovery. Once the circuit voltage returns to within the safe operating range, the device will automatically reconnect the power supply after a configurable recovery delay (1–500 seconds, default 30 s) — no manual intervention required.
Q: Can the over-voltage and under-voltage trip points be adjusted?
A: Yes. The over-voltage trip point is adjustable from 230V to 300V (factory default: 270V) and the under-voltage trip point from 140V to 210V (factory default: 170V). Protection action time is also user-configurable between 0.1 and 30 seconds, giving you full control over sensitivity.
Q: How is this device installed in an electrical panel?
A: The YHSP-3 mounts directly onto a standard 35 mm DIN rail, making installation straightforward in any standard distribution board or electrical enclosure. No special tools are required beyond a flathead screwdriver for wiring.