"b contact" is normally closed contact, and It is also called "NC (Normally Closed) contact".

It is the number that can be opened/closed per hour under the conditions specified in the standard.

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

When it is connected as special connection, AC/DC compatible circuit breaker can be used with DC 250V or more (3-pole ty

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

The rated operational voltages for them are 200 to 440VAC. If using them in 100VAC or 110VAC circuit, earth-leakage prot

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

The push button is used for testing whether it definitely trips when an earth leakage current occurs. At this test, a Le

AX (Auxiliary switch) is a switch which electrically displays the ON / OFF state. The markings are 14/AXa, 12/AXb and 11

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

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Low-voltage Circuit Breakers

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FAQ within [ Low-voltage Circuit Breakers ]

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B contact of AL/AX

"b contact" is normally closed contact, and It is also called "NC (Normally Closed) contact". More Details >>
- No：22435
- Release Date：2018/08/31 14:33
- Category： Accessories and Related Components
Operating cycles

It is the number that can be opened/closed per hour under the conditions specified in the standard. More Details >>
- No：22436
- Release Date：2018/08/31 14:33
- 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
Max. operational voltage for AC/DC Common

When it is connected as special connection, AC/DC compatible circuit breaker can be used with DC 250V or more (3-pole type is DC400V and 4-pole type is DC500... More Details >>
- No：22445
- Release Date：2018/08/31 14:33
- Category： Molded Case 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
4-pole type in 100VAC or 110VAC

The rated operational voltages for them are 200 to 440VAC. If using them in 100VAC or 110VAC circuit, earth-leakage protection does not operate. More Details >>
- No：24820
- Release Date：2019/04/09 15:10
- Category： Earth Leakage 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
Test button

The push button is used for testing whether it definitely trips when an earth leakage current occurs. At this test, a Leakage Display button will be come out... More Details >>
- No：22347
- Release Date：2018/08/31 14:33
- Category： Earth Leakage Circuit Breakers
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 >>
- No：22354
- Release Date：2018/08/31 14:33
- Category： Accessories and Related Components
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
- Category： Molded Case Circuit Breakers

11-20 of Total 124

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