Product Description

© switching while pass through zero:
Depending on intelligent chip and digital circuit and magnetic holding relay, ASFK combined switch perform switching on when voltage passing through, and switch off while current passing through zero, make the switch opened or closed at zero value, not produce over-voltage.Also it has no surging current, low power loss, high service life, low fault and etc,they are widely used in the field of low voltage reactive power compensation.

© Protection function:
Use microprocessor to monitor and control switching relay and the operation status of input source and load, provide complete protection functions
1.Protection against system over-voltage, under-voltage:when these faults occur, it will switch off automatically, and the indicator is ON for warning.
2.Protection of phase failure: if any phase is lost, it will switch off automatically, and the indicator is ON for warning.
3.Protection of power off: when the power is ON, but out of power failure suddenly, it will switch off automatically.
4.Protection of no-load: if the system has no load, closing operation will be not performed, and the indicator will flash for warning.
5.Indicate the switch status of each phase, indicators: continuous ON means normal, flashing means: over-voltage, under-voltage or phase failure, A/B/C phase status
Indicator ON , continuous lighting, means the switch closed, the indicator of some phase flashing, means this phase has fault, or the capacitor of this Self-diagnosed under discharging.
Self-diagnosed fault: If any phase has fault, it will reject action, indicator flash for warning.

© Combined switch dose not need to connect with N line.

© Low power loss:
Magnetic holding relay will consume power only at the time of switching, otherwise it will not need power.

© Operation safety:
All input signal for control are safely isolated form inner circuits, meanwhile the advanced intelligent control technology is adopted, in comparison with similar product, our type has smaller surge, and more reliable. Input signal is isolated from combined switch through photoelectric mode, high EMC protected facility, anti-interference, safe operation.