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ESB24-31

The ABB ESB24-31 is a compact installation contactor designed for DIN-rail mounting and reliable switching of electrical loads in low-voltage distribution systems. It is commonly used in residential, commercial, and industrial electrical panels to control loads such as lighting, heating, pumps, small motors, and other equipment.

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Technical Parameters Specification Value Product Type Installation Contactor Series ESB24 Model ESB24-31 Number of Poles 4 Contact Configuration 3 Normally Open (NO), 1 Normally Closed (NC) Rated Operational Current (AC-1) 24 A at 400 V AC Rated Operational Power (AC-1) Up to ~5.5 kW (single-phase 230 V), ~16 kW (three-phase 400 V) Rated Operational Current (AC-3) ~9 A (motor loads at 230 V or 400 V) Control/Coil Voltage Typically 230…240 V AC/DC (varies with variant) Rated Insulation Voltage (Ui) 500 V Rated Impulse Withstand Voltage (Uimp) 6 kV Mounting DIN-rail (TH35) Degree of Protection IP20 Ambient Operating Temperature –25 °C to +55 °C Pollution Degree 3 Rated Frequency Range 40…450 Hz Mechanical Durability ~1,000,000 operations Electrical Durability AC-1: ~150,000 cycles; AC-3: ~500,000 cycles Dimensions (approx.) 36 × 85 × 65 mm (W × H × D) Weight ~0.24 kg Standards IEC/EN 60947 series Typical Applications Lighting, HVAC, pumps, heaters, motor control, general load switching