描述

The 84871023 is a multivoltage AC current transformer designed for precise current monitoring and control in industrial applications. It features a current measurement range of 2–500 mA with an adjustable AC current threshold from 1 to 20 A AC (30 Hz to 400 Hz) via front-mounted button control. The device supports multiple supply voltages (24 VDC, 24 VAC, 48 VAC, 120 VAC, 220 VAC) with a tolerance of -15% to +15%, and includes a relay output rated at 5 A – 250 V AC with 1 changeover contact. Key technical features include frequency measurement capability of 40–500 Hz, adjustable hysteresis of 5–50% of the displayed threshold, and display precision of ±10%. The unit is housed in a 22.5 mm DIN rail-mounted enclosure (IEC/EN 60715 compliant) with operating temperature range of -20°C to +50°C, making it suitable for switchboard integration, motor protection circuits, and industrial automation systems requiring reliable current sensing and control.