Overview
The HYM1L Series Earth Leakage Circuit Breaker (hereinafter referred to as the “circuit breaker”) is one of the new earth leakage circuit breakers designed and developed by our company with international advanced technology. This series of products is suitable for the circuits with AC 50 Hz, rated isolation voltage of 800 V, rated working voltage of 400 V, and rated current up to 630 A and below, which can provide indirect contact protection for people with fatal electric shock, and can also be used to prevent major fire hazard caused by grounding fault current caused by equipment insulation damage. It can be used to protect the overload, short circuit and undervoltage of the line, and can also be used for infrequent transfer of lines.
The earth leakage circuit breaker is characterized by small size (equal to that of the corresponding molded case circuit breaker), high breaking current, short flashover and adjustable residual current operating time. It can be equipped with alarm contact, shunt trip, undervoltage release, auxiliary contact, handle rotation operating mechanism, electric operating mechanism and other accessories, and can adopt the wiring in front of the plate, behind the plate and of the plug-in type, which is an ideal product for users.
The product complies with the requirements of GB 14048.2.
Normal working conditions
1. The altitude of the installation location shall not exceed 2,000 m.
2. The ambient air temperature shall be -5°C~+40°C. The average temperature within 24 hours shall not exceed +35°C.
3. The relative atmospheric humidity shall not exceed 50% when the ambient air temperature is +40°C. The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of that month is +20°C.
4. Installation category: III.
5. Contamination grade: Grade 3.
6. The installation place shall have no significant shaking and impact vibration.
7. The magnetic field near the installation site shall not exceed 5 times of the geomagnetic field in any direction.
8. The earth leakage circuit breaker shall generally be installed vertically.
Model description
Note:
(1) 2P is denoted by 2; 3P is denoted by 3; and 3P+N and 4P are denoted by 4.
(2) The type of neutral pole (N pole) of the 4-pole circuit breaker is divided into:
Type A: The N pole is not equipped with an overcurrent tripping element and is normally on, and is not closed/opened with the other three poles (Code: A).
Type B: The N pole is not equipped with an overcurrent tripping element, and is closed/opened with the other three poles (Code: B).
Where the Type A 4-pole circuit breaker is 3P+N type.
Where the shell frame level rated current of Inm＝400 A and 630 A is not followed by L or M, and the outline dimensions and technical parameters are the same as those of Type M
Technical parameters
Note: The adjustment of the three-gear residual operating current can be selected by the user.
