MCCB and MCB as terms

MCCB stands for "Molded Case Circuit Breaker." This is defined in the IEC standard, IEC 60947-2 and in the UL standard, UL 489. MCB stands for "Miniature Ci... More Details >>

Rating of a circuit breaker for trans...

When making a transformer to energize, a large inrush current may flow. The circuit breaker is therefore required to prevent unwanted trip. The selection of ... More Details >>

Wrong connection in reverse

It may not trip a fault current or degrade insulation after tripping. When you connect the device in reverse, you must select a reverse-connectable model. More Details >>

Select rated current sensitivity

Please select rated current sensitivity ,according to the protection purpose and the protective grounding resistance value of the load equipment. If you alre... 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 >>

AL

AL (Alarm switch) is a switch which electrically displays tripping state of a circuit breaker.The markings of the switch are 8/ALa, 96/ALb and 95/ALc.*When t... More Details >>

Time-delay CBR

The circuit breaker is designed to attain a predetermined value of limiting non-actuating time corresponding to a given value of residual current. Our time-d... More Details >>

AX

AX (Auxiliary switch) is a switch which electrically displays the ON / OFF state. The markings are 14/AXa, 12/AXb and 11/AXc.* If the circuit breaker itself ... More Details >>

SHT

SHT has a burning prevention switch and it does not burn even if external switch remains "ON" state (After the circuit breaker trips, a burning prevention sw... More Details >>

How to select at Inverter circuit

Basically you have to consider the effect of harmonic waves, but there are two ways as below. 1. Refer to the recommended rated current by inverter manufactu... More Details >>