Rishabh Instruments Pvt. Ltd. Protection Relays & Systems AR-1-2-1

The AR-1-2-1 is a single-phase current protection relay designed for monitoring motor, genset, transformer, and ground fault conditions. It features adjustable overcurrent and undercurrent trip points (30-140% and 10-95% of nominal current, respectively), with variable hysteresis (5-50%) and trip delay (0-10 seconds). The relay operates from a 60-300 V AC/DC auxiliary supply and measures true RMS current up to the 15th harmonic. It has two relay outputs with a contact rating of 5 A at 250 V AC or 30 V DC, and supports auto or manual reset. The device complies with IEC 61010-1-2010 safety standards, has an IP20 front enclosure, and operates between -10°C and +55°C. It weighs approximately 175 g.