ACB　add earth leakage protection

When earth leakage current protection module (ER) is attached, it is possible to protect against earth leakage current. "Trip" or "Alarm signal output" can b... More Details >>

ACB How to check the operating chara...

Y-2005 type field test equipment (it is sold separately) enable to check the operating characteristic easily. The test is conducted by connecting the test te... More Details >>

ACB　installation type

There are Fixed type and Drawout type. More Details >>

ACB How to store drawout handle

Set the handle holder to the right side of the drawout frame with the included screw and nut, and store the drawout handle. However, the circuit breaker with... More Details >>

Release element in neutral (4P breaker)

AE-SW 4-poles with WS relay (general protection) has overcurrent protection for neutral-pole. The tripping characteristic is same as phase-pole. Moreover, A... More Details >>

Degree of protection

In order to prevent breakdowns and human injuries, it is necessary to select a control device having protection structure suitable for each purpose. The prot... More Details >>

Setting change operation while power ...

It is forbidden to change the characteristic when the breaker ON. Over current trip and earth leakage trip characteristics should be changed by a person with... More Details >>

Test button

The push button is used for testing whether it definitely trips when an earth leakage current occurs. At this test, a Leakage Display button will be come out... More Details >>

Ambient temperature

The range of ambient temperature is from -10 to 40 degree Celsius for not only MCCB but also including Earth Leakage Circuit breaker, Earth Leakage Relay and... More Details >>

Cascade breaking

It is a method which breaks short circuit current with both upstream and downstream circuit breakers. For example, in the case that short circuit current at ... More Details >>