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ABB MS165-20 Manual Motor Starter 14-20 Amp 45KW
ABB 1SAM451000R1012 MS165-20 manual motor starter with a 14–20 A adjustable current range, 7.5 kW motor rating at 400 V AC and integrated overload, short-circuit and phase-failure protection.
£111.73
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.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Application | Motor protection | |
| Actuator Type | Rotary | |
| Terminal Type | Screw Terminal | |
| Current Range | 10–16 A, 16–25 A | |
| Device Type | Motor protection breaker | |
| Manufacturer | ABB | |
| Series | MS165 | |
| Model | MS165-20 | |
| Product ID | 1SAM451000R1012 | |
| Product type | Manual motor starter / motor protection circuit breaker | |
| Current setting range | 14–20 A | |
| Rated operational current | 20 A | |
| Rated motor power at 400 V AC | 7.5 kW | |
| Number of poles | 3 | |
| Overload trip class | Class 10 | |
| Short-circuit breaking capacity | up to 100 kA | |
| Short-circuit instantaneous release | 300 A | |
| Protection | Overload, short circuit and phase failure | |
| Operating temperature | -25 to +60 °C | |
| Storage temperature | -50 to +80 °C | |
| Protection rating | IP20 housing | |
| Main circuit terminal protection | IP10 | |
| Product width | 55 mm | |
| Product height | 142.65 mm | |
| Product depth | 122.1 mm | |
| Weight | approx. 0.95 kg | |
| Standards | IEC/EN 60947-1, IEC/EN 60947-2, IEC/EN 60947-4-1 |
Frequently Asked Questions
What is the ABB 1SAM451000R1012 used for?
The ABB 1SAM451000R1012 MS165-20 is used to manually switch and protect electric motors against overloads, short circuits and phase failures in industrial motor control applications.
What is the current range of the ABB MS165-20?
The MS165-20 has an adjustable motor protection current setting range of 14–20 A, allowing the overload protection to be matched to the rated current of the connected motor.
What motor power can the MS165-20 protect?
The ABB MS165-20 is rated for motor applications up to approximately 7.5 kW at 400 V AC, subject to the motor's actual rated current being within the 14–20 A adjustment range.
What protection does the ABB MS165-20 provide?
The device provides thermal overload, electromagnetic short-circuit and phase-failure protection, together with trip class 10 operation and a trip-free mechanism.
Can accessories be fitted to the ABB MS165-20?
Yes. The MS165 range supports ABB accessories including auxiliary contacts, signalling contacts, undervoltage releases, shunt trips and power in-feed blocks, allowing the starter to be integrated into more advanced motor control systems.
Trusted Motor Protection from ABB
ABB MS165 manual motor starters provide compact and dependable motor protection for industrial machinery, combining overload, short-circuit and phase-failure protection with convenient manual switching and flexible accessory integration.
