Siemens Jordfelsbrytare, 4 polen, Typ A, 40A, 30 mA SENTRON SENTRON CE

Protect people and boost workplace safety with the support of this Siemens RCCB. It breaks an electrical circuit in case of a residual current fault, which could otherwise damage equipment, shock workers or even start a fire. This device trips immediately to prevent such incidents whenever it detects residual current flowing to the ground wire. It's a 4-pole option, so you can use it to safeguard up to four circuits at a time. The breaker's quick to install as it simply snaps onto a standard 35mm DIN rail.

• 10kA short-circuit and 1kA surge rating, so safely handles current faults and surges

As a Type A component, you can trust it to trip with sinusoidal residual AC currents and pulsating residual DC currents, so it's a versatile choice.