The Havells RCCB (Residual Current Circuit Breaker) 4 Pole with a sensitivity of 40/30mA is a type of electrical protection device used in residential, commercial, and industrial applications.
Here’s what each part of the designation typically means:
- RCCB: Residual Current Circuit Breaker. This device is designed to quickly disconnect the circuit in case of a leakage current (residual current) to prevent electric shocks or fires.
- 4 Pole: This indicates the number of poles in the RCCB. In electrical terminology, a pole refers to a set of contacts. A 4-pole RCCB provides protection for all four poles in a three-phase system, including the three live conductors and the neutral.
- 40/30mA: This refers to the sensitivity of the RCCB. The first value (40mA) typically represents the sensitivity to earth leakage currents in normal installations, while the second value (30mA) represents the sensitivity required in special locations such
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