84871034 is an AC current monitoring relay (EIH type) designed for current threshold detection and control applications. It features a built-in current transformer fitted by passing a cable through the front, with an adjustable AC current threshold from 1 to 20 A AC (30 Hz to 400 Hz) via a front-mounted button. The unit offers multivoltage power supply compatibility including 24 VDC, 24 VAC, 48 VAC, 120 VAC, and 220 VAC, with a relay output rated at 5 A - 250 V AC with 1 N/O contact. Key specifications include a maximum breaking current of 8 A AC, mechanical life of 5 x 106 operations, and operating temperature range of -20°C to +50°C. The 22.5 mm casing mounts on 35 mm symmetrical DIN rail and weighs 140 g. This relay is ideal for industrial automation, motor protection, and load monitoring applications where reliable current threshold detection is required.