Earth-leakage protection relay ELR-3B

earth-leakage protection relay
earth-leakage protection relay
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Measured/monitored value
earth-leakage, current
Other characteristics
programmable, digital, differential, automatic reset, configurable, for generators, IEC, DIN rail, for feeder, manual reset, for three-phase motor pump, for recloser control, adjustable, modular, electronic, compact, with fault indication, for electric motors, transmission line
Trigger voltage

230 V, 250 V


Residual Current Monitor device Type B. Associated to external core balance transformer the CTB-1/xxx family. It has 2 programmables outputs relays. Main trip and prealarm signal. It has one free voltage input for external TRIP/RESET. Mounting in DIN rail 466277 or PANEL 72x72 by means of accesories (3EDA03). Displays setting values and instantaneus earth leakage current value. Field of application Type B relays are widely used where they can generate, in case of failure, continuous discharge currents; Common application fields are: - frequency converters - medical devices such as radiography and / or TAC equipment - inverters for photovoltaic systems (side c.a.) - power supply lifts - test facilities in laboratories - means of production in the yards - loading stations and forklift trucks - cranes for industry, crafts and trade - mechanical workshops, for example for arc welding machines - metalworking machines for numerical control


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