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The Live CB232C Double Pole MCB is a heavy-duty industrial-grade miniature circuit breaker designed to provide comprehensive protection for very high-power single-phase circuits requiring simultaneous switching of both phase and neutral conductors while handling substantial inrush currents. Rated at 32 Amps with a C-curve tripping characteristic, this 2-pole breaker safeguards both the phase and neutral conductors on AC systems up to 230/400V at 50/60Hz frequency. It features a powerful 10kA breaking capacity, making it suitable for installations with high prospective short-circuit currents. The C-curve characteristic (5-10x In) provides excellent protection for circuits with significant inductive loads while accommodating the inrush currents typical of large motors, industrial pumps, and heavy machinery. With its robust construction and precision thermo-magnetic release, the CB232C ensures complete circuit isolation and equipment protection for demanding industrial applications requiring double pole switching with substantial inductive load tolerance.
Complete Double Pole Protection: Simultaneously protects and switches both phase and neutral conductors, ensuring complete circuit isolation during fault conditions and maintenance.
High 10kA Breaking Capacity: Powerful fault current interruption for installations with high prospective short-circuit currents up to 10,000 amps.
C-Curve Characteristic: Trips instantaneously at 5-10 times rated current (160A to 320A), specifically calibrated for circuits with substantial inductive loads and significant inrush.
Very High-Capacity 32A Protection with Inductive Tolerance: Ideal for large single-phase motors (up to 5HP), industrial pumps, compressors, and heavy machinery.
Complete Isolation: Neutral pole disconnects simultaneously with phase, preventing floating neutral conditions and ensuring safety during maintenance.
Industrial-Grade Protection: Handles significant inrush currents from large motor-driven industrial equipment without nuisance tripping.
Precision Thermo-Magnetic Release: Thermal bimetal strip for accurate overload protection and magnetic solenoid for instantaneous short-circuit response on both poles.
Superior Electrical Isolation: 4000V impulse withstand rating and 500V insulation voltage for protection against voltage transients.
Extended Operational Life: 8,000 electrical operations for long-term reliability in demanding industrial environments.
Professional Installation: Standard 35mm DIN-rail mounting with IP20 finger-safe terminals and 16mm² wiring capacity.
| Specification | Details |
|---|---|
| Brand | Live |
| Series | CB |
| Model Number | CB232C |
| Device Type | Miniature Circuit Breaker (MCB) |
| Pole Configuration | 2 Pole (2P) - Switches Phase + Neutral |
| Current Rating (In) | 32 Amperes |
| Trip Curve Type | C Curve (5-10 × In) |
| Operational Voltage | 230/400V AC |
| Rated Breaking Capacity | 10kA (10000 Amps) |
| Frequency Range | 50/60 Hertz |
| Insulation Rating (Ui) | 500 Volts |
| Impulse Withstand (Uimp) | 4000 Volts (1.2/50 µs) |
| Dielectric Test Voltage | 2kV for 60 seconds |
| Protection Mechanism | Thermo-magnetic (both poles) |
| Neutral Pole Protection | Fully protected and switched |
| Operating Temperature | -5°C to +40°C (daily average ≤35°C) |
| Calibration Reference | 30°C |
| Storage Temperature | -25°C to +70°C |
| Electrical Lifespan | 8,000 cycles |
| Protection Class | IP20 |
| Terminal Capacity | Up to 16 mm² |
| Mounting Type | DIN Rail (35mm) |
| Standards | BS IEC/EN 60898 |
1. What specific industrial applications require a 32A C-Curve double pole MCB?
Large single-phase motors up to 5HP (3.7kW), industrial pumps, heavy-duty compressors, large conveyor drives, industrial mixers, and machine tool main drives requiring neutral switching.
2. Can this 32A C-Curve breaker handle a 3.7kW industrial motor?
Yes, it's ideal for 3.7kW motors. The C-Curve tolerates starting currents up to 300A (8-10x FLC) while the 32A rating provides excellent running protection without nuisance tripping.
3. What is the advantage of double pole for industrial machinery?
Double pole provides complete isolation of both phase and neutral, essential for safe maintenance of industrial machinery per IEC 60204, especially where multiple power sources may be present.
4. Why choose C-Curve over B-Curve for 32A industrial motor circuits?
C-Curve (5-10x In) handles starting currents up to 320A where B-Curve (3-5x In) would trip at 160A, making C-Curve essential for large industrial motors with high locked-rotor currents.
5. What cable size is mandatory for 32A C-Curve industrial circuits?
6mm² copper conductor minimum. 10mm² recommended for longer runs to minimize voltage drop during motor starting. Terminals accept up to 16mm². Both phase and neutral must be same size.
