Description
The MS165-73 manual motor starter is a high-performance protection circuit breaker designed for dependable motor control and advanced protection. Built to handle up to 45 kW (400 V) / 80 A, it offers robust overload and phase-failure protection within a compact 55 mm housing. Its design includes a fault indication window for quick diagnostics, as well as temperature compensation and a trip-free mechanism for safe and stable operation. For fully integrated system performance, use it alongside our industrial panel fabrication solutions to achieve optimized power distribution and protection.
Key Specifications – Protection Circuit Breaker MS165-73
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Rated Motor Power: Up to 45 kW (at 400 V) 
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Rated Operational Current: Up to 80 A 
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Trip Class: 10 
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Width: 55 mm 
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Protection: Overload, short-circuit, and phase failure 
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Fault Indication Window: Yes 
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Operating Voltage: 400 V 
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Lockable Rotary Handle: Yes 
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Application: Three-phase and single-phase motors 
Highlights
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Combines manual motor control and circuit protection in one compact unit 
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Visual fault indication for rapid maintenance and diagnostics 
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Temperature-compensated tripping ensures consistent performance 
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Trip-free mechanism prevents manual override during faults 
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Compatible with MS116 and MS132 accessories for flexible system design 
Typical Uses
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Industrial motor control centers 
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Pumps, conveyors, and compressors 
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HVAC and automation systems 
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Heavy-duty process and manufacturing equipment 
Installation & Support
The MS165-73 supports quick DIN-rail or panel mounting for flexible installation.
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Accessory support includes auxiliary contacts, bus bars, and trip modules 
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Delivered with wiring documentation and setup guide 
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Supported by ABB local service teams and spare part distribution 
 
					 
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