Brief introduction about 3VA 100A Dual Lamp Economy Edition Latching Relay Self resetting overvoltage and undervoltage protector:
When the voltage return to normal after 30 seconds the power supply automatically connects.
The three-phase self resetting overvoltage and undervoltage protector works by detecting the voltage level in the power supply line. When the voltage exceeds or falls below the set threshold, the protector will automatically cut off the circuit to prevent equipment damage. After the voltage returns to normal level, the protector will automatically reconnect the circuit after a delay period without manual intervention.
main features
Automatic reset: The protector automatically resets after the voltage returns to normal, without the need for manual operation.
High reliability: In the event of transient or transient overvoltage, the protector will not malfunction.
Inverse time limit action: The action time of the protector is usually within 1 second.
Modular design: easy to install and maintain, with rail mounting options.
Status indication: The working status is indicated by a dual color LED, with green indicating normal voltage and red indicating overvoltage or undervoltage or delay.
Application scope
Three phase self resetting overvoltage and undervoltage protectors are widely used in power distribution systems of households and shopping malls, as well as in the protection of various electrical equipment in industrial environments, such as distribution boxes, central air conditioning units, electrical control boxes, distribution cabinets, cranes, etc.
technical parameter
Rated working voltage: AC230V/400V
Rated working current: 32A, 40A, 50A, 63A
Withstand impulse voltage: 4kV (compliant with safety standards for Class III electrical appliances)
Wiring capability: Suitable for insulated wires of 25 square millimeters and below
Principle of selection
When selecting a three-phase self resetting overvoltage and undervoltage protector, the following factors should be considered:
Limit the scope of the fault: Select a protector that can limit the impact of the fault and prevent it from expanding.
Motor start-up time: The action time of the protector should be greater than three times the motor start-up time.
