Overview

The HUM18LY-63 Series Earth Leakage Circuit Breaker is suitable for circuits with AC 50 Hz, rated voltage up to 230 V, rated current less than 63 A and the neutral point of the power supply grounded. The circuit breaker is mainly used for electric shock protection and overcurrent protection on buildings and line equipment for similar purposes, and can also provide protection against fire hazards caused by earth fault current generated by insulation damage of electric equipment.

The HUM18LY-63 Series Earth Leakage Circuit Breaker has two types including the type AC and the type A. Among them, the type AC only protects the AC leakage current, while the type A protects the leakage current from pulsed DC (PDC) besides protecting the AC leakage current. In terms of leakage current protection, the type A is more comprehensive and safer than the type AC.

The HUM18LY-63 Series Earth Leakage Circuit Breaker is complete in accessory, which can be equipped with auxiliary contacts, alarm contacts, shunt trip, undervoltage release, overvoltage release, and overvoltage & undervoltage release, providing great convenience for intelligent application.

The HUM18LY-63 Series Earth Leakage Circuit Breaker complies with GB/T16917.1 Residual current operated circuit breakers with integral overcurrent protection for household and similar uses (RCBO) Part 1: General rules.

Normal Operating Conditions

1. The upper limit of ambient air temperature shall not exceed +40°C, the lower limit shall not be lower than -5°C, and the average value within 24 hours shall not exceed +35°C.

2. The altitude of the installation location shall not exceed 2,000 meters.

3. The relative atmospheric humidity at the installation location shall not exceed 50% when the maximum temperature is 40°C, and a higher relative humidity is allowed at a lower temperature. The average maximum relative humidity of the wettest month shall not exceed 90%, and the average monthly temperature of that month shall not exceed 25°C. Measures must be taken for condensation generated on the product surface due to temperature changes.

4. The contamination grade: Grade 2.

5. The installation category: II and III.

6. The earth leakage circuit breaker is installed with TH35-7.5 standard guide rails.

7. The external magnetic field of 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, and the power supply is connected  when the handle is upward.

9. The installation location shall be free of significant impact and vibration.