ELCB medium-sensitivity

It is the Earth Leakage Circuit Breaker with rated residual operating current of higher than 30mA but not exceeding 1000mA. We provide the products of "100, ... More Details >>

Inverse time delay operating characteristic

It is a characteristic that operating time inversely become shorter as current increases. For Molded Case Circuit Breakers, protection characteristic meeting... More Details >>

ACB opening time

For Shunt Trip (SHT), it is the time from voltage application to open ACB main contact * AE3200-SW or less, AE4000-SWA: 0.04 sec or less* AE4000-SW to AE6300... More Details >>

PV use MCCB

We don't provide the earth leakage circuit beaker for PV power. Please use a general leakage circuit breaker. However, you need to select a reverse-connectab... More Details >>

Type name of the operating handle

F-2SV is standard, F-2SVE is for emergency use. The difference is the color of the handle and its surroundings parts. More Details >>

Insulating barrier in the package

Use the insulation barrier if they are packed with. If not using that, breaking performance is not guaranteed. For models that the insulation barrier is not ... More Details >>

Lifetime with SHT or UVT

The number of trip durability by using SHT and UVT is 10% of the opening/closing number including the number of trips by overcurrent, trip button and test bu... More Details >>

MCCB, ELCB and ACB at higher altitudes

In that case, the rated current and the rated voltage shall be reduced. Refer to the table of derating factors as below. More Details >>

Short circuit current calculation software

You can calculate that with MELSHORT 2 (Free of charge). More Details >>

Low-instantaneous trip

When Power-Fuse (PF) is used as a high-voltage side protection device, coordination with MCCBs on the secondary side shall be achieved. Therefore, MCCB has l... More Details >>