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The Live CA463C 4 Pole MCB is the highest-capacity industrial-grade miniature circuit breaker in the CA series, engineered to provide comprehensive protection for three-phase systems requiring simultaneous neutral conductor switching in the most demanding applications with heavy inductive loads. Rated at 63 Amps with a C-curve tripping characteristic, this 4-pole breaker represents the maximum current rating available, safeguarding all three phases and the neutral conductor on AC systems up to 400V at 50/60Hz frequency. It delivers robust protection against overloads and short circuits, making it the ideal choice for heavy industrial main distribution boards, large motor circuits (up to 30kW/40HP), industrial compressors, heavy pumps, and major manufacturing equipment where complete isolation of all conductors is essential for operational safety. With a substantial 6kA breaking capacity and precision thermo-magnetic release, the CA463C ensures equipment protection and personnel safety in the most demanding industrial environments.
Complete 4-Pole Industrial Protection: Simultaneously protects and switches all three phases (L1, L2, L3) and neutral (N), ensuring complete circuit isolation for heavy industrial applications with large inductive loads.
Maximum Capacity C-Curve Characteristic: Trips instantaneously at 5-10 times rated current (315A to 630A), handling the largest motors, compressors, and transformers with significant inrush currents.
Peak Industrial Main Distribution Rating: 63A per pole (maximum series rating) provides substantial capacity for heavy industrial main distribution boards and large motor circuits up to 30kW (40HP).
Integrated Neutral Switching: Neutral pole disconnects simultaneously with phases, preventing floating neutral conditions and ensuring complete safety during maintenance.
Reliable Breaking Capacity: Certified 6kA rating ensures safe interruption of fault currents, protecting expensive industrial equipment.
Precision Thermo-Magnetic Release: Thermal bimetal strip for overload protection and magnetic solenoid for short-circuit response across all four 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 duty cycles.
Professional Installation: DIN-rail mounting with IP20 finger-safe terminals and 16mm² wiring capacity.
| Specification | Details |
|---|---|
| Brand | Live |
| Model Number | CA463C |
| Device Type | Miniature Circuit Breaker (MCB) |
| Pole Configuration | 4 Pole (3P + N) |
| Current Rating (In) | 63 Amperes (Maximum series rating) |
| Trip Curve Type | C Curve (5-10 × In) |
| Operational Voltage | 230/400V AC |
| Frequency Range | 50/60 Hertz |
| Short-Circuit Capacity | 6kA (6000 Amps) |
| 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 (all poles) |
| Neutral Pole Protection | Switched neutral |
| Operating Temperature | -5°C to +40°C |
| Calibration Reference | 30°C |
| Electrical Lifespan | 8,000 cycles |
| Protection Class | IP20 |
| Terminal Capacity | Up to 16 mm² |
| Mounting Type | DIN Rail (35mm) |
| Standard | IEC 60898-1 |
1. What are the main applications for the CA463C 63A 4P MCB?
Heavy industrial motor circuits up to 30kW (40HP), large compressors, heavy pumps, industrial main distribution, large HVAC chillers, conveyors, and major manufacturing equipment requiring neutral switching.
2. What motor power can this maximum capacity 63A breaker handle?
DOL start: up to 22kW (30HP). Star-delta/soft start: up to 30kW (40HP). VFD applications: up to 33kW (45HP). Always verify motor starting characteristics.
3. Why choose 4-pole at maximum 63A capacity for heavy industry?
Provides complete isolation including neutral for IT earthing systems, large VFDs, CNC machines, robotic systems, and compliance with IEC 60204 at peak power levels.
4. What cable size is recommended for 63A heavy industrial circuits?
16mm² minimum (matches terminal capacity) for short runs. For runs over 15m, use 25mm² or 35mm² with external termination. Consider parallel 16mm² cables.
5. When is 4-pole switching mandatory at maximum capacity?
IT earthing systems, generator changeover panels, marine/offshore, chemical plants, mining, and where equipment manufacturers specify complete isolation for heavy machinery.
