Motor Protection Circuit Breaker
We manufacture and supply Motor Protection Circuit Breakers (MPCB), also known as manual motor starters, designed to protect motors from overload and short circuit in industrial applications.
Why Choose Our Motor Protection Circuit Breakers (MPCB)
Rated Current Range: 0.1A – 80A (adjustable)
Pole Configuration: 2P / 3P
Protection Functions: Thermal overload, magnetic short-circuit, phase failure
Mounting Method: Standard DIN rail
Rated Voltage: Up to 690V AC
Compliance: IEC/EN 60947-2, IEC/EN 60947-4-1
Application: Industrial motor protection and control panels
Our Advantages
- Premium-Grade Materials & Heat Resistance Our motor protection circuit breakers (MPCB)are manufactured with premium-grade materials, providing superior durability and excellent heat resistance for long-term industrial use.
- Precise Thermal-Magnetic Protection TheMPCB manual motor starters feature accurate thermal and magnetic protection mechanisms to ensure reliable response to motor overload and short-circuit conditions.
- Automatic Calibration for Consistent Performance Equipped with fully automatic calibration and testing equipment, each motor protection circuit breakeris precisely calibrated to ensure consistent quality and stable performance.
- CE Certified for Global Compliance Our motor protection circuit breakersmeet CE certification requirements, ensuring compliance with international safety and quality standards for global applications.
- Flexible OEM Customization We supportOEM customization for MPCB products, including specifications, configurations, and branding, to meet different application and market requirements.
- Excellent Cost-Performance and After-Sales Support With competitive cost-performance and reliable after-sales service, we help customers reduce downtime, control costs, and ensure long-term motor protection.
What is a Motor Protection Circuit Breaker (MPCB)?
A Motor Protection Circuit Breaker (MPCB) is a device designed to protect electric motors against overload, short-circuit, and phase failure. It integrates thermal and magnetic protection in one compact unit for reliable motor safety in industrial applications.
Why use an MPCB instead of a standard circuit breaker or overload relay?
An MPCB is specifically designed for motor protection, with adjustable settings matched to motor full-load current and improved phase-loss protection. Unlike standard breakers or separate overload relays, it combines overload and short-circuit protection in a single device, simplifying installation and reducing system cost.
How do I select the right MPCB for my motor?
Select an MPCB whose adjustable current range covers the motor’s full-load current (FLA). Proper selection also considers motor voltage, power rating, pole configuration, and application conditions to ensure reliable protection.
What protection functions does our MPCB provide?
Our motor protection circuit breakers provide thermal overload protection, instantaneous magnetic short-circuit protection, and phase failure or imbalance protection. Each unit is calibrated using automatic testing equipment to ensure consistent and stable performance.
Is our MPCB CE certified and suitable for global use?
Yes. Our MPCBs are CE certified and comply with international standards such as IEC/EN 60947-2 and IEC/EN 60947-4-1, making them suitable for use in industrial motor control systems worldwide.
How easy is it to install and operate our MPCB?
Our MPCB manual motor starters support standard DIN-rail mounting for easy installation. Current adjustment and operation are handled through a clear rotary knob or handle, allowing simple setup, manual ON/OFF control, and quick reset after tripping.