Siemens Motor Circuit Breaker 14–20A with 1NO+1NC Auxiliary Contact (Model / SKU: 3MV8100-1MN00)

The Siemens 3MV8100-1MN00 motor circuit breaker is engineered to provide precise and dependable protection for electric motors against overload, short-circuit, and phase failure conditions. With an adjustable current range of 14–20 A, it allows accurate matching to motor full-load current, improving operational safety and equipment lifespan. The device integrates both thermal and magnetic trip mechanisms, ensuring rapid fault isolation under abnormal conditions.

This model includes built-in auxiliary contacts (1NO + 1NC), enabling seamless integration into control and monitoring circuits for status indication and interlocking functions. Its screw terminal design ensures reliable electrical connections, while the compact construction supports efficient panel space utilization. Suitable for industrial environments, it meets standard requirements for motor branch circuit protection and control.

Typical Applications
• Protection of three-phase electric motors in industrial systems
• Motor starter panels and control centers (MCC)
• Conveyor systems and material handling equipment
• HVAC motor protection and control circuits
• Pump and compressor motor protection