Elcb circuit breaker rating
ELCB (Earth Leakage Circuit Breaker) circuit breakers are designed to detect and interrupt earth leakage currents in electrical circuits. The rating of an ELCB circuit breaker depends on several factors, including:
- Current rating: The maximum current that the ELCB can handle without tripping. This is usually expressed in amperes (A) and is typically in the range of 10-63 A.
- Voltage rating: The maximum voltage that the ELCB can handle. This is usually expressed in volts (V) and is typically in the range of 230-400 V.
- Earth leakage current rating: The maximum earth leakage current that the ELCB can detect and interrupt. This is usually expressed in milliamps (mA) and is typically in the range of 10-1000 mA.
- Frequency rating: The frequency of the electrical supply that the ELCB is designed to operate with. This is usually 50 Hz or 60 Hz.
- Inrush current rating: The maximum inrush current that the ELCB can handle without tripping. This is usually expressed in amperes (A) and is typically in the range of 10-100 A.
Some common ELCB circuit breaker ratings include:
- Type B ELCB: Suitable for residential and commercial applications, with a current rating of up to 63 A, voltage rating of up to 230 V, and earth leakage current rating of up to 1000 mA.
- Type C ELCB: Suitable for industrial applications, with a current rating of up to 125 A, voltage rating of up to 400 V, and earth leakage current rating of up to 5000 mA.
- Type D ELCB: Suitable for high-current applications, with a current rating of up to 250 A, voltage rating of up to 400 V, and earth leakage current rating of up to 10,000 mA.
When selecting an ELCB circuit breaker, it's essential to ensure that it meets the requirements of the specific application, including the maximum current, voltage, and earth leakage current.