ABB MS165-54 1SAM451000R1016 MS165 Manual Motor Starter 40-54A

The ABB MS165-54 (article 1SAM451000R1016) is a manual motor starter with a current setting range of 40 to 54 A, built to protect motors up to 45 kW at 400 V. Part of the compact MS165 family at just 55 mm wide, it shields motors from overload and phase failure and includes a built-in disconnect function for safe isolation.

Technical specifications:

• Series: MS165-54
• ABB article number: 1SAM451000R1016
• EAN: 4013614486104
• Current setting range: 40 - 54 A
• Motor power rating: up to 45 kW (at 400 V)
• Width: 55 mm
• Trip class: 10
• Phase compatibility: three-phase and single-phase applications

Features and benefits:

• Overload and phase failure protection with trip class 10 characteristics keeps motors running safely under fault conditions.
• Built-in disconnect function combined with a trip-free mechanism allows safe and reliable isolation of the motor circuit.
• A separate fault indication window gives immediate visual confirmation when short-circuit tripping has occurred.
• Lockable rotary handle with clear ON/OFF position indication prevents unauthorized switching and simplifies status checks.
• Temperature compensation maintains consistent tripping behavior regardless of ambient temperature variation.

Applications:

• Overload and phase failure protection for three-phase motors in industrial machinery and automation panels.
• Single-phase motor protection in HVAC units, pumps, and building services equipment.
• Motor branch circuit protection within control cabinets and switchgear assemblies.
• Direct-on-line motor starting installations where a compact footprint and clear fault indication are required.

Also known as: ABB MS165-54, MS165-54 1SAM451000R1016, manual motor starter 40-54 A, motor protection circuit breaker, manual motor protector.