How to use NV250-WEV

Transformers, wires and welded materials may be damaged if an abnormal energization occurs exceeding the energization cycles that are set for the inverter we... More Details >>

IEC60947-2 standard

IEC 60947-2 is an international standard for circuit breakers. The rated voltage for the applicable circuit breaker is 1000V AC or less, or DC 1500V DC or le... More Details >>

Residual non-operating current

It is a current that does not leak-trip even if there is ground fault current or leakage current. In the standard, it is 50 % of the rated residual operating... More Details >>

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 >>

MCCB Reverse connection

Almost MCCBs can be connected n reverse. Check the item column of specification table "reverse connection" in the catalog. If it says "Possible", MCCB can be... More Details >>

ELCB reverse connection

Almost ELCBs can be connected n reverse. Check the item column of specification table "reverse connection (below 230 V AC)" in the catalog. If it says "Possi... More Details >>

Operation handle CE marking

The operating handle is an external accessory for a circuit breaker and there is no safety standard for the operating handle itself. Therefore, there is no C... More Details >>

ACB DC use

It is not possible to use standard AE-SW in DC circuit. Special DC use AE-SW is provided if specified. More Details >>

ACB trip indication

Generally, there is no Mechanical Trip indication of continuous output for AE-SW. It is necessary to indicate electrically by using OCR Alarm (AL) output or ... More Details >>

ACB　test position

The test position is a position where a main circuit is in the "disconnected" state and only control circuit is in the "connected" state. Control circuit che... More Details >>