ABB MS165-73 Manual Motor Starter 62-73 Amps 45KW

Why Choose the MS165-73 [1SAM451000R1018]

The MS165 is a compact motor protection device designed for motors up to 45 kW (400 V) and 80 A, housed within a 55 mm width. It provides dependable protection against overload and phase failure, with a trip class 10 rating. A distinct fault indication window clearly signals short-circuit tripping events. Key features include an integrated disconnect function, temperature compensation, a trip-free mechanism, and a rotary handle offering clear switch position visibility. Suitable for both three-phase and single-phase applications, the manual motor starter—also referred to as a motor protection circuit breaker—includes a lockable handle to prevent unauthorized operation. A range of accessories, including auxiliary and signaling contacts, undervoltage releases, shunt trips, and power in-feed blocks, are compatible across the MS116, MS132, and MS165 series, ensuring flexible integration and enhanced functionality.

Technical Specification

• Function: Motor protection breaker for up to 45 kW (400 V) / 80 A with trip class 10, including overload and phase failure protection.
• Rated Operational Voltage: Up to 690 V AC and 250 V DC.
• Rated Operational Current: 73 A AC-3 / AC-3e / DC-5.
• Contact Configuration: 3 poles with rotary handle and contact position indication (ON / OFF / TRIP).
• Insulation & Impulse Ratings: Rated insulation voltage 1000 V, impulse withstand voltage 8 kV.
• Degree of Protection: Housing IP20, main circuit terminals IP10.
• Terminal Type and Size Range: Screw terminals supporting flexible and rigid cables from 1 to 50 mm².
• Mechanical Durability: 50,000 operations; Electrical durability: 20,000 cycles.
• Mounting: DIN rail TH35-15 / TH35-7.5 (IEC 60715) compatible, multiple mounting positions (1 to 6).

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"Specified by UK panel builders for dependable control." Controls Engineer, UK