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MS325-20

The ABB MS325‑20 is a manual motor starter designed for reliable motor control and protection in industrial and commercial electrical systems. It allows operators to manually start and stop motors while providing built‑in overload and short‑circuit protection without the need for separate fuses. It features a rotary handle with clear ON/OFF indication and a built‑in disconnect function. The device is suitable for three‑phase applications and supports phase loss sensitivity for enhanced motor safety.

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Key Specifications Electrical Ratings Rated Current: 20 A Adjustment/Setting Range: 16–20 A Rated Operational Voltage: up to 690 V AC / 440 V DC Rated Operational Power (AC‑3, 400 V, 3‑phase): ~7.5 kW Full Load Current (Motor): ~27 A Rated Service Short‑Circuit Breaking Capacity (Ics): ~55 kA at 400 V AC Trip Class: 10 Poles: 3 poles Protection & Mechanisms Overload Protection: Adjustable thermal Short‑Circuit Protection: Magnetic Phase Loss Sensitivity: Included Trip‑Free Mechanism: Yes Disconnect Function: Yes Handle Indication: Clear ON/OFF Mechanical / Installation Operation Type: Manual (rotary handle) Terminal Type: Screw/thread connection Mounting: DIN‑rail or panel Enclosure Rating: IP20 Operating Temperature: –25 °C to +50 °C Dimensions: ~87.5 mm (H) × 54 mm (W) × 75.5 mm (D) Operating Cycles: ~100,000 Standards & Compliance IEC/EN 60947‑1, 60947‑2, 60947‑4‑1 UL508, CSA 22.2 No. 14 RoHS compliant