Type A earth leakage relays are essential components in industrial electrical installations. They offer advanced protection against leakage currents, ensuring the safety of people and electrical equipment.
Type A earth leakage relays are suitable for any installation with alternating component earth leakage currents. For installations with earth leakage currents with a DC component, we recommend the use of a type B earth leakage relay. Type A earth leakage relay are mandatory for TT neutral systems.
This relay is used in conjunction with a trip protection device (automatic power cut-off) and provides protection against indirect contact. The aim is therefore to limit earth leakage currents to ensure the safety of people and property.
This makes it a versatile, high-performance solution, suitable for a wide range of industrial or tertiary applications.
Increased sensitivity
The type A earth leakage relay is highly sensitive for detecting even small leakage currents.Its detection range of 30 mA to 30 A (depending on the differential toroid) means it can react quickly in the event of an earth leak.This sensitivity guarantees optimum protection, even in situations where residual currents are low.
High trigger speed
With a fully configurable triggering speed from 20 ms (instantaneous) to 30 seconds, the installation is optimally protected. A high trigger speed means a faster response to electrical defaults. This considerably reduces the risk of electrocution or fire by enabling the power supply to be cut off quickly.