IEC 60947-2 is an international standard for circuit breakers. The rated voltage for the applicable circuit breaker is 1

The degess of protection for ACB is IP20 as standard (under the condition that front door is closed). For MCCB and ELCB,

It is a characteristic that operating time inversely become shorter as current increases. For Molded Case Circuit Breake

Operating characteristics described in our catalog (if there is no "Note" particularly) mean operating time when it star

At time-delay tripping zone, it operates with bimetal, therefore the characteristics of AC and DC should be same if the

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

It is a protection method which only trips the related circuit breaker and other fault-free circuit does not trip and co

Basically you have to consider the effect of harmonic waves, but there are two ways as below. 1. Refer to the recommende

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

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FAQ within [ Molded Case Circuit Breakers ]

21-30 of Total 49

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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 >>
- No：22361
- Release Date：2018/08/31 14:33
degrees of protection to　 IEC60529

The degess of protection for ACB is IP20 as standard (under the condition that front door is closed). For MCCB and ELCB, the degrees of protection can be IP2... More Details >>
- No：24812
- Release Date：2019/04/09 15:18
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 >>
- No：22387
- Release Date：2018/08/31 14:33
Hot start characteristics

Operating characteristics described in our catalog (if there is no "Note" particularly) mean operating time when it starts to carry current from the conditio... More Details >>
- No：22374
- Release Date：2018/08/31 14:33
Inst tripping current value of AC/DC common breaker

At time-delay tripping zone, it operates with bimetal, therefore the characteristics of AC and DC should be same if the effective values of them are same. Ho... More Details >>
- No：22392
- Release Date：2018/08/31 14:33
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 >>
- No：24801
- Release Date：2019/04/09 15:17
Selective coordination

It is a protection method which only trips the related circuit breaker and other fault-free circuit does not trip and continues power supply in the event of... More Details >>
- No：22366
- Release Date：2018/08/31 14:33
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 >>
- No：22360
- Release Date：2018/08/31 14:33
Rear stud (B-ST) installed

B-ST is possible. More Details >>
- No：24814
- Release Date：2019/04/09 15:17
Short circuit current calculation software

You can calculate that with MELSHORT 2 (Free of charge). More Details >>
- No：22394
- Release Date：2018/08/31 14:33

21-30 of Total 49

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