Earth leakage relay ELR-61/ELR-M61 , fitted with filters at the input circuits, is practically immune to external disturbances, so as the pulse currents . This is also the suitable answer in many of the industrial requirements . An outstanding characteristic of the present relays, is the permanent control of the Toroidal - ELR circuit. These devices may be fitted optionally with the mechanical tripping indication (ELR-M61), which is quite suitable for signalling of a tripped unit, in absence of auxiliary supply. Bornika is the exclusive representative of Contrel company, in purchasing , sales, consulting and distribution of industrial equipment including Earth leakage relay ELR-61/ELR-M61.