Product Overview
This 40-63A motor protection circuit breaker is a compact and efficient solution for motor starting, switching, and protection in industrial control systems. Designed for 3 phase motor applications, it combines overload protection, short-circuit protection, and manual switching in one device.
Suitable for motor control panels, machinery, pumps, compressors, and conveyor systems, this MPCB helps protect motors while supporting stable and safe operation.


Key Features
• Adjustable current range: 40-63A
• Designed for 3 phase motor circuits
• Rated voltage up to 690V
• Thermal magnetic tripping for overload and short-circuit protection
• Compact design for easy panel installation
• Manual ON/OFF motor control
• Suitable for industrial motor starter applications
• IEC 60947-4-1 compliant
Technical Specifications
Product Type: Motor Protection Circuit Breaker
Current Range: 40-63A
Poles: 3P
Rated Voltage: Up to 690V
Protection Type: Thermal Magnetic
Application: Motor starting, switching, overload protection, short-circuit protection
Standard: IEC 60947-4-1
Applications
This 40-63A motor protection circuit breaker is suitable for a wide range of industrial motor applications, including:
• Water pumps
• Air compressors
• Ventilation systems
• Conveyor equipment
• Machine tools
• Industrial automation panels
• HVAC motor control systems


Why Choose Our Motor Protection Circuit Breaker
• Stable quality for industrial applications
• OEM and private label support available
• Fast quotation and sample support
• Suitable for distributors, panel builders, and project buyers
• Factory-direct supply for better cost control
Need a reliable 40-63A motor protection circuit breaker for your project or distribution business? Contact us today for pricing, OEM support, and technical details.


Technical Specifications of 40-63A Motor Protection Circuit Breaker
| Item | Specification |
|---|---|
| Product Name | Motor Protection Circuit Breaker |
| Model | MPCB 40-63A |
| Current Setting Range | 40-63A |
| Number of Poles | 3P |
| Rated Operational Voltage | Up to 690V |
| Protection Type | Thermal Magnetic |
| Function | Motor Starting, Switching, Overload and Short-Circuit Protection |
| Application | 3 Phase Motors |
| Standard | IEC 60947-4-1 |
| Mounting | DIN Rail / Panel Mounting |
| Frequency | 50/60Hz |
| OEM / ODM Service | Available |
This 40-63A motor protection circuit breaker is designed for reliable protection and manual control of 3 phase motors. It combines overload protection and short-circuit protection in one compact device, making it suitable for industrial motor starter and control panel applications.


FAQ
What is a motor protection circuit breaker used for?
A motor protection circuit breaker is used to protect electric motors against overload, short circuit, and phase failure while also allowing manual switching and isolation.
Is this 40-63A MPCB suitable for 3 phase motors?
Yes. This model is designed for 3 phase motor applications and is suitable for industrial motor control systems within the 40-63A adjustable current range.
What protection functions does this motor protection circuit breaker provide?
It provides thermal protection for overload conditions and magnetic protection for short-circuit faults.
What is the rated voltage of this MPCB?
This model is rated for motor circuits up to 690V.
Can you provide OEM or private label service?
Yes. We support OEM customization, including branding, packaging, and bulk supply for distributors and project customers.
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