Why Choose the ABB 1SAM451000R1012 MS165-20 Manual Motor Starter?
The ABB 1SAM451000R1012, also known as the MS165-20, is a compact and powerful manual motor starter and motor protection circuit breaker designed to protect electric motors against overloads, short circuits and phase failures. As part of the proven ABB MS165 manual motor starter series, it combines motor protection, manual switching and disconnect functionality in a compact 55 mm-wide device.
The MS165-20 provides thermal and electromagnetic motor protection with a 14–20 A adjustable current setting range and trip class 10 overload protection. It also features phase-loss sensitivity, temperature compensation, a trip-free mechanism and clear ON, OFF and TRIP position indication, helping provide dependable protection and straightforward operation in industrial control systems.
With a rated operational motor power of 7.5 kW at 400 V AC and a high short-circuit breaking capacity of up to 100 kA, the MS165-20 is suitable for demanding motor control applications. Its three-pole construction and compatibility with ABB auxiliary contacts, signalling contacts, undervoltage releases, shunt trips and power in-feed accessories make it a versatile solution for industrial machinery and control panels.
Key Advantages
- Compact manual motor starter with integrated motor protection.
- 14–20 A adjustable current setting range for matching the connected motor.
- Rated for motors up to 7.5 kW at 400 V AC.
- Provides overload, short-circuit and phase-failure protection.
- High short-circuit breaking capacity of up to 100 kA.
- Trip class 10 overload protection for standard motor starting applications.
- Built-in disconnect function and trip-free operating mechanism.
- Lockable rotary handle helps prevent unauthorised operation or adjustment.
Key Features
- ABB MS165 manual motor starter series.
- MS165-20 model with 14–20 A adjustable overload setting.
- 3-pole construction for three-phase motor circuits.
- 7.5 kW rated operational motor power at 400 V AC.
- Thermal and electromagnetic motor protection.
- Trip class 10 overload characteristic.
- Phase-loss sensitivity for enhanced motor protection.
- Temperature compensation from -25 to +60 °C.
- Separate short-circuit trip indication and clear ON/OFF/TRIP status indication.
- Compact 55 mm width for efficient control-panel installation.
Reliable Motor Protection for Industrial Applications
Manual motor starters such as the ABB MS165-20 combine switching and protection functions in a single compact device. Thermal overload protection responds to sustained overcurrent conditions, while electromagnetic protection provides rapid disconnection during short-circuit events. Phase-loss sensitivity provides additional protection where loss of a supply phase could otherwise cause damaging motor currents.
The MS165 series is designed for reliable integration into industrial motor control systems. Adjustable and sealable overload settings allow the protection level to be matched to the actual motor current, while the disconnect function, lockable rotary handle and clear switch-position indication support safe operation and maintenance.
Typical Applications
- Industrial electric motor protection.
- Pumps, fans and ventilation systems.
- Conveyors and material handling equipment.
- Compressors and processing machinery.
- Manufacturing and production equipment.
- Motor control centres and electrical control panels.
- OEM machinery and industrial automation systems.
