>Overview

CZB5LE-125 residual current action circuit breaker is suitable for AC 50Hz, rated voltage single-pole two-wire, two-pole 230V, three-pole, three-pole four-wire, four-pole 400V, rated current from 63A to 125A in the line, when personal electric shock or grid leakage current exceeds the specified value, the leakage circuit breaker can quickly cut off the faulty power supply in a very short time to protect the safety of personal and electric equipment, at the same time can protect the line and motor overload or short circuit, also as infrequent conversion of the line and motor infrequent start.

The product conforms to GB/T 14048.2 "Low-voltage switchgear and controlgear low-voltage circuit breakers" standard and is equivalent to IEC60947-2:1997 standard.

>Model number and meaning

>Normal working conditions

1、Altitude not exceeding 2000m;

2、Ambient air temperature not higher than +40°C and not lower than -5°C; average value of 24h not exceeding 35°C;

3、Relative humidity of the atmosphere, not exceeding 50% at a maximum ambient temperature of +40°C; higher relative humidity is possible at lower temperatures, with a monthly average maximum relative humidity of 90% at a monthly average temperature of +25°C in the wettest month, taking into account the condensation that occurs on the surface of the product as a result of temperature changes;

4、Pollution class: Class 3;

5、Installation category: Class III;

6、Mounting type: mounting with TH35-7.5 steel mounting rails;

7、Installation conditions: the external magnetic field of the installation site should not exceed 5 times the geomagnetic field in any direction; the earth leakage circuit breaker should generally be tilted no more than 5° in all directions vertically; the handle is turned upwards for the power-on position and the installation should be free from significant shocks and vibrations.

>Main technical parameters

1、Rated voltage Ue (V): 1P+N/2P:230V , 3P/3P+N/4P: 400V;

2、Rated current Ie (A): 63, 80, 100, 125 A;

3、Shell frame class rated current Inm (A): 125A;

4、Rated residual action current I∆n (A): 0.03, 0.05, 0.075, 0.1;

5、Rated residual non-action current I△no (A): 0.5I△n;

6、Delayed limit non-drive times: 0.06s, 0.1s;

7、Overvoltage protection level: 280V ± 5%;

8、Rated short-circuit breaking capacity Icu (A): 6000;

9、Rated residual switching and breaking capacity I∆m (A): 2000;

10、Breaking time for rated residual current action

I△n≤0.03A general type and circuit breaker available 0.25A instead of 5I△A instead of 10I△n

11、Overcurrent protection features

>Form and mounting dimensions