Horizontal allowable distance when installing ACB

Flatness of mounting plane: 1 mm or less.In addition, it is necessary to consider the horizontality of the panel. More Details >>

Accuracy class index of active energy

Accuracy class index of active energy is a number which gives the limits of the permissible percentage error as defined in the IEC62053-22. 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 >>

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 >>

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 >>

How to use Trip button

It is a button in order to trip MCCB. It is used for regular inspection of the switching mechanism, and trip condition of MCCB when Alarm switch (AL) and Shu... 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 >>

Rated insulation voltage

It is voltage which ensures withstand voltage and it is used as basis to determine insulation distance. More Details >>

Rated current sensitivity

Earth Leakage Circuit Breaker and Earth Leakage Relay operate at higher than 50% but not exceeding 100% of the rated residual operating current IΔn. The eart... More Details >>

F-type and V-type operating handle

Both of F-type and V-type can remotely operate a circuit breaker in the panel board and the design of 800A fame or less are unified. Features are as follows.... More Details >>