Specifications
General
Type: Miniature Circuit Breaker (MCB)
Series: CP3
Model: CP3-31R-10
Application: Overcurrent and short-circuit protection for low-voltage circuits
Number of Poles: 3-pole
Mounting: DIN rail or panel mount
Electrical Characteristics
Rated Current (In): 10 A
Rated Operational Voltage (Ue): 230/400 V AC
Breaking Capacity (Icn): 6 kA (at 400 V AC)
Tripping Characteristics: Type B or C (depending on variant)
Rated Frequency: 50 / 60 Hz
Rated Insulation Voltage (Ui): 500 V
Rated Impulse Withstand Voltage (Uimp): 6 kV
Mechanical & Construction
Housing Material: High-grade thermoplastic
Mechanical Life: >10,000 operations
Electrical Life: >4,000 operations at rated load
Terminal Type: Screw terminals
Dimensions: Compact for DIN rail installation
Protection Class: IP20
Environmental Conditions
Operating Temperature: –25 °C to +55 °C
Storage Temperature: –40 °C to +70 °C
Humidity: 0–95% RH, non-condensing
Standards & Certifications
Standards Compliance: IEC 60898-1, EN 60898-1
Safety & EMC: CE marked
Approvals: UL, CSA depending on region
Features
Reliable overcurrent and short-circuit protection
Compact 3-pole design for easy installation
High breaking capacity ensures safety under fault conditions
Quick tripping for protection of circuits and equipment
Suitable for industrial, commercial, and residential applications
The ABB CP3-31R-10 is a 3-pole miniature circuit breaker (MCB) designed for overcurrent and short-circuit protection in low-voltage electrical installations. It ensures reliable protection of circuits, equipment, and personnel in industrial, commercial, and residential applications.