Non-operation type 3-phase earth leakage breaker

Non-operation type 3-phase earth leakage breaker

In order to actively respond to the Industrial Safety and Health Act,

B106ho, Gwangmyeongyedk M-Cluster, 17, Deogan-ro 104beon-gil, Gwangmyeong-si, Gyeonggi-do, phon:02-66764665 E-Mail :

If a 3-phase earth leakage breaker was installed on the cooling tower power line

Preventable Fire Accidents

current problem

-Industrial 3-phase earth leakage breaker trips occasionally, so avoid using it and install a wiring breaker instead.

It is difficult to prevent fire because it is installed and operated as a leak alarm in the upper switchboard.

-Applied to refrigerators and freezers and occasionally tripped, a circuit breaker was used for fear of damage to refrigerated food, and then a fire occurred due to overheating and short circuiting of the compressor motor.

-When installing and operating an earth leakage breaker, there is a problem of unnecessary operation due to the occurrence of instantaneous leakage current when the magnetic contactor at the rear stage is operated.

-Frequent fires occur due to overheating of the three-phase cooling air cooler motor.

What is an unnecessary operation prevention type (IOP) 3-phase earth leakage breaker?

-What is IOP (Inconvenience unnecessarily Prevent) 3-phase medium-sensitivity earth leakage breaker?

It means a 3-phase medium-sensitivity earth leakage breaker that does not trip unnecessarily due to a rise in instantaneous leakage current.

-The 3-phase earth leakage breaker of the current method is a medium-sensitive earth leakage breaker and is designed to trip within 0.1 seconds at 100mA ~ 1,000mA leakage current.

This patented product is time sequential when instantaneous leakage current occurs according to the phase change when instantaneous change of current phase occurs even in one of three phases.

By applying a comparison algorithm, a medium-sensitivity 3-phase earth leakage breaker has been devised to prevent the inconvenience of being blocked unnecessarily by the instantaneous distortion waveform.

-If a leakage current exceeding 0.1 seconds occurs, it is recognized as a leakage current and tripped normally to prevent a leakage current, so that the production equipment is also sufficiently

Installed an earth leakage breaker and was able to operate it.

-Patent registration number: No. 10-2270144 (2021. 06.22)

-Three-phase earth leakage breaker for semiconductor and display equipment

-Three-phase earth leakage breaker inside factory production equipment

- 3-phase earth leakage breaker for motor cut-off protection

-For large refrigerators and freezers

-For Compression Compressor

-For fish farm 3-phase pump

-3 Phase Inverter Fountain Pump

-For elevator

-For 3-phase air conditioner outdoor unit fan

- Injection machine



-Protection cooperation with single-phase earth leakage breaker is possible by operating time (other products cooperate with protection by leakage current size)

-When installed in industrial production equipment, it is possible to prevent electric leakage (operable at 100mA class)

-Prevention of electric shock to certain parts of semiconductor and display production equipment

- Significantly reduce the installation cost of the leak detector by installing the existing MCCB and external leak detector simultaneously with one 3-phase earth leakage breaker

(Satisfies Article 41, Paragraphs 1, 2, and 3 of the Technical Standards for Electrical Equipment)

-Criteria for installing a leak detector: Satisfies Article 41 (4)