Only electricians who have enough technical knowledge should change the setting of overcurrent tripping and earth leakag

It is a tripping zone which instantly trips, when significantly overcurrent such as short-circuit currents flow.

The range of ambient temperature is from -10 to 40 degree Celsius for not only MCCB but also including Earth Leakage Cir

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

Bar terminal material for 400A is aluminum alloy, and for 630A or higher is copper.

Use with 24V, 0.5A or more for AC and DC in normal use. If the breakers are used less than 24V, use with 6V, 1A or more.

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

A circuit breaker must have interrupting ratings. These are classified as rated short-circuit breaking capacities in IEC

MCCB stands for "Molded Case Circuit Breaker." This is defined in the IEC standard, IEC 60947-2 and in the UL standard,

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FAQ within [ Molded Case Circuit Breakers ]

1-10 of Total 49

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Change Electronic relay characteristics when it is energized

Only electricians who have enough technical knowledge should change the setting of overcurrent tripping and earth leakage tripping characteristics. Moreover,... More Details >>
- No：22409
- Release Date：2018/08/31 14:33
Instantaneous tripping

It is a tripping zone which instantly trips, when significantly overcurrent such as short-circuit currents flow. More Details >>
- No：22363
- Release Date：2018/08/31 14:33
Ambient temperature

The range of ambient temperature is from -10 to 40 degree Celsius for not only MCCB but also including Earth Leakage Circuit breaker, Earth Leakage Relay and... More Details >>
- No：22352
- 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
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
MCCB bar terminal material

Bar terminal material for 400A is aluminum alloy, and for 630A or higher is copper. More Details >>
- No：24819
- Release Date：2019/04/09 15:13
Minimum operating voltage

Use with 24V, 0.5A or more for AC and DC in normal use. If the breakers are used less than 24V, use with 6V, 1A or more. Moreover, regular inspection of is ... More Details >>
- No：22401
- 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
Interrupting ratings

A circuit breaker must have interrupting ratings. These are classified as rated short-circuit breaking capacities in IEC 60947-2.e rated ultimate short-circu... More Details >>
- No：22341
- Release Date：2018/08/31 14:33
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 >>
- No：22340
- Release Date：2018/08/31 14:33

1-10 of Total 49

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