It is the maximum voltage which meets the performance criteria for the rated operational voltage.

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

It is a current that does not leak-trip even if there is ground fault current or leakage current. In the standard, it is

AL (Alarm switch) is a switch which electrically displays tripping state of a circuit breaker.The markings of the switch

When making a transformer to energize, a large inrush current may flow. The circuit breaker is therefore required to pre

1. The internal resistance (per pole) is described in the catalog and technical notes. 2. Power consumption (W) = RI^2

It is forbidden to change the characteristic when the breaker ON. Over current trip and earth leakage trip characteristi

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

In order to prevent breakdowns and human injuries, it is necessary to select a control device having protection structur

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Low-voltage Circuit Breakers

Miniature Circuit Breakers(2)

FAQ within [ Low-voltage Circuit Breakers ]

51-60 of Total 123

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Operational voltage

It is the maximum voltage which meets the performance criteria for the rated operational voltage. More Details >>
- No：22367
- Release Date：2018/08/31 14:33
- Category： Molded Case Circuit Breakers
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
- Category： Molded Case Circuit Breakers
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 >>
- No：22356
- Release Date：2018/08/31 14:33
- Category： Earth Leakage Circuit Breakers
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 >>
- No：22350
- Release Date：2018/08/31 14:33
- Category： Accessories and Related Components
Rating of a circuit breaker for transformers primary protection

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 >>
- No：22343
- Release Date：2018/08/31 14:33
- Category： Molded Case Circuit Breakers
Calorific value of the circuit breaker

1. The internal resistance (per pole) is described in the catalog and technical notes. 2. Power consumption (W) = RI^2 x Poles = Resistance (Ω) x Load curre... More Details >>
- No：38025
- Release Date：2021/01/22 17:39
- Category： Molded Case Circuit Breakers
Setting change operation while power is on

It is forbidden to change the characteristic when the breaker ON. Over current trip and earth leakage trip characteristics should be changed by a person with... More Details >>
- No：37699
- Release Date：2020/01/18 09:58
- Category： Molded Case Circuit Breakers , Air Circuit Breakers
replace AE-SS with AE-SW

(1) and (2) are impossible. More Details >>
- No：24818
- Release Date：2019/04/09 15:03
- Category： Air Circuit Breakers
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
- Category： Molded Case Circuit Breakers
Degree of protection

In order to prevent breakdowns and human injuries, it is necessary to select a control device having protection structure suitable for each purpose. The prot... More Details >>
- No：22443
- Release Date：2018/08/31 14:33
- Category： Molded Case Circuit Breakers

51-60 of Total 123

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