| Model | SH8 | UV9 | OV9 | UV9+OV9 |
| Type | Shunt Release | Undervoltage tripping | Overvoltage trip | Unde&Over-voltage of Single-phase |
| Standard | IEC/EN 60947-5-1 | IEC/EN 60947-1 | IEC/EN 60947-1 | IEC/EN 60947-1 |
| Function | | | | |
| When it gets signal, it triggers the circuit breaker to trip. | When power voltage lowers( 35%~70%Un), it makes circuit breaker trip; When power is not supplied normally, it prevents circuit breaker from reconnecting to the circuit. | Monitor voltage between phase line and neutral line. When voltage rises( for example, neutral line is broken) , it triggers circuit breaker to trip. | It has function of over-voltage release, and function of making circuit breaker trip when power voltage lowers. |
| | 0.2 S time delay prevents the temporary lowering of voltage from causing mistrip. | rated tripping voltage range: 280vac±5%. | Rated tripping voltage range: 280vac±5%. Rated under-voltage tripping range: 55~160v. |
| Application | | | | |
| Distant control can achieve emergency breaking. | Prevent machine from restarting without control signal, ensuring safety. | Prevent over-voltage from damaging circuit and equipment. | Prevent over-voltage and under-voltage from damaging circuit and equipment. |
| Voltage Ue | AC 230/400V AC 48V AC 12/24V | AC 230/400V | AC 230/400V | AC 230/400V |
| DC 120V DC 48V DC 12/24V | | | |
| Rated frequency | 50/60Hz | | | 50/60Hz |
| Test function | No | yes | yes | yes |
| Working temperature | -25~+70℃ | | | -25~+70℃ |
| Wiring Diagram | | | | |
