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1SAM451000R1016

The ABB MS165‑54 is a manual motor starter / motor protection breaker designed to provide combined manual ON/OFF control and overload/short‑circuit protection for motors and electrical loads. It integrates a thermal‑magnetic protection mechanism to shield motors from overload and phase failure conditions, while also offering a built‑in disconnect function and a clear rotary handle for ON/OFF/TRIP indication. The device is intended for DIN‑rail mounting in industrial and commercial control panels.

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Key Technical Parameters General & Electrical Ratings Product / Model: ABB MS165‑54 Manual Motor Starter Part Number: 1SAM451000R1016 Type: Manual motor starter / motor protection breaker Number of Poles: 3 (three‑pole) Rated Continuous Current (Iu): 54 A Overload Release Current Setting Range: 40 – 54 A Undelayed Short‑Circuit Release: ~810 A Rated Operational Voltage: 250 – 690 V AC Rated Operational Power (AC‑3): ~22 kW at 400 V AC Phase Sensitivity: Phase failure protection included Control / Mechanism: Thermomagnetic (thermal + magnetic) protection with trip‑free reset mechanism Mechanical & Connection Mounting: DIN‑rail installation Terminals: Screw‑type connections for main circuit Handle: Rotary ON/OFF/TRIP handle, lockable Enclosure Protection: IP20 Trip Class: Class 10 (typical timing behavior of the overload release) Performance & Protection Short‑Circuit Breaking Capacity: Typical rated service breaking capacity ~50 kA at 400 V AC Built‑In Disconnect: YES (visibly disconnects load when OFF) Phase Loss Detection: YES Temperature Compensation: Integrated to maintain trip accuracy over temperature change Dimensions & Physical Width: ~55 mm Height: ~142.6 mm Depth: ~122 mm Mounting Width: Standard DIN rail module width suitable for control cabinets Applications Motor Protection: Protection and manual control of three‑phase motors (up to ~22 kW @ 400 V) Control Panels: Industrial and commercial electrical control and protection systems Overload & Short‑Circuit Protection: Integrated load safeguarding without separate fuse requirement