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

Earth Leakage Circuit Breaker and Earth Leakage Relay operate at higher than 50% but not exceeding 100% of the rated res

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

It is a circuit breaker which has higher instantaneous tripping current value in order to prevent unwanted tripping by m

(1) When "N" is marked on the breaker,connect the N phase wire as marked. (2) When "N" is not marked on the breaker,

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

It is possible to reverse-connect if the circuit voltage of UL789 listed products is AC240V or less. Since they are doub

The color of terminal identification tube and lead wire is same.For one AL switch, 98/ALa terminal : red, 96/ALb termina

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

The knob of the sensitivity current selector is set to the maximum value when shipping in order to prevent unwanted eart

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Low-voltage Circuit Breakers

Miniature Circuit Breakers(2)

FAQ within [ Low-voltage Circuit Breakers ]

71-80 of Total 123

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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
Rated current sensitivity

Earth Leakage Circuit Breaker and Earth Leakage Relay operate at higher than 50% but not exceeding 100% of the rated residual operating current IΔn. The eart... More Details >>
- No：22364
- Release Date：2018/08/31 14:33
- Category： Earth Leakage Circuit Breakers
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
High inst MCCB for transformer primary side

It is a circuit breaker which has higher instantaneous tripping current value in order to prevent unwanted tripping by magnetizing inrush current of a transf... More Details >>
- No：22358
- Release Date：2018/08/31 14:33
- Category： Circuit Breakers for Use in Particular Applications
How to connect to 2-pole breaker

(1) When "N" is marked on the breaker,connect the N phase wire as marked. (2) When "N" is not marked on the breaker, N phase wire can be connected to eith... More Details >>
- No：37700
- Release Date：2020/01/17 08:58
- Category： Molded Case Circuit Breakers
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
- Category： Molded Case Circuit Breakers
UL ELCBs Reverse connection

It is possible to reverse-connect if the circuit voltage of UL789 listed products is AC240V or less. Since they are double standard products of UL/CSA and CE... More Details >>
- No：22411
- Release Date：2018/08/31 14:33
- Category： Earth Leakage Circuit Breakers
AL/AX/SHT/UVT terminal markings and wire colors

The color of terminal identification tube and lead wire is same.For one AL switch, 98/ALa terminal : red, 96/ALb terminal : blue, 95/ALc terminal : grayFor S... More Details >>
- No：22396
- Release Date：2018/08/31 14:33
- Category： Accessories and Related Components
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
- Category： Molded Case Circuit Breakers
Default setting from the factory

The knob of the sensitivity current selector is set to the maximum value when shipping in order to prevent unwanted earth leakage tripping when Earth Leakage... More Details >>
- No：22391
- Release Date：2018/08/31 14:33
- Category： Earth Leakage Circuit Breakers

71-80 of Total 123

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