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MS165-65 52-65A

The ABB MS165‑65 is a manual motor starter / motor protection switch designed to provide combined manual ON/OFF control and fuseless protection for three‑phase motors and other electrical loads. It offers thermal and magnetic overload protection, phase‑failure sensitivity, and a clear ON/OFF/TRIP position indicator. The adjustable current setting allows precise protection for motors within the 52 – 65 A range, and the unit can be used as a motor protector, manual starter, or circuit breaker in industrial and commercial applications.

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Key Technical Parameters General & Electrical Ratings Product Type: Manual Motor Starter / Motor Protection Switch Series: MS165 Current Setting Range: 52 – 65 A Poles: 3‑pole (three phases) Rated Operational Current: 65 A Rated Operating Voltage (Main Circuit): Up to 690 V AC Rated Frequency: 50/60 Hz Rated Operational Power (AC‑3): ~30 kW at 230 V / ~30 kW at 400 V Overload Protection: Thermomagnetic (trip class 10) Phase Failure Sensitive: Yes Trip Free Mechanism: Yes Disconnect Function: Yes Setting Adjustability: Adjustable and sealable current setting Action / Handle: Rotary handle with clear ON / OFF / TRIP indication Short‑Circuit & Protection Short‑Circuit Interrupting Capacity: Typically high (design for safe interruption up to standards for motor starters) Phase Loss / Overload Protection: Built‑in sensitivity and thermal / magnetic protect Manual Operation: ON / OFF switching with automatic trip response Mechanical & Environmental Connection Type: Screw terminals Mounting Type: DIN‑rail or panel mount Enclosure / Protection: IP20 (housing) Operating Temperature: Approximately –25 °C to +60 °C Operating Cycles: Roughly 25,000 electrical, 50,000 mechanical Dimensions: Compact — approximate width ~55 mm Applications Protection and Control: Provides manual motor starting, overload protection, phase failure detection, and short‑circuit reaction without requiring separate fuses. Installation: Suitable for industrial control panels, motor starters, pump and compressor protections, HVAC systems, and general power circuits where motor protection is required.