The RR3B-USAC24V is a 3-pole general-purpose power relay manufactured by IDEC, featuring a blade (BA) termination style and AC 24V coil rated at 105 mA (60 Hz) or 121 mA (50 Hz) with a coil resistance of 79 O. The relay provides contact ratings of 10 A at 30 V DC (resistive) and 7.5 A at 120 V AC (inductive), with silver contacts exhibiting a maximum contact resistance of 30 mO and a minimum applicable load of 24 V DC/10 mA. Operating and release times are both 25 ms maximum, with a frequency response of 1,800 operations per hour and electrical life expectancy exceeding 500,000 operations at 120 V, 50/60 Hz, 10 A. The relay operates across a temperature range of -30 °C to +70 °C, withstands dielectric strength of 2,000 V AC (1 minute) between live and dead parts, and features vibration resistance up to 6 G at 55 Hz maximum. This relay is ideal for industrial control, automation, and power distribution applications requiring reliable switching of moderate-current loads in AC-powered systems.