Kaitselüliti tester on lülitusseade, mis katkestab rikkevoolud, ja elektrikaare kustutamine, hetkel, mil kaitselüliti kontaktid lahutatakse (ahel katkestatakse), nõuab hoolikat projekteerimist.
A switchgear tester is a switching device that interrupts fault currents; the extinguishing of the electric arc at the moment the circuit breaker contacts are separated (the circuit is broken) requires careful design.
