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The Live CB150C Single Pole MCB is a heavy-duty high-capacity miniature circuit breaker engineered to provide reliable protection for very high-power single-phase electrical circuits with significant inductive loads. Rated at 50 Amps with a C-curve tripping characteristic, this 1-pole breaker safeguards the phase conductor on AC systems up to 230V at 50/60Hz frequency. It features a powerful 10kA breaking capacity, making it suitable for installations with high prospective short-circuit currents near main distribution points. The C-curve characteristic (5-10x In) provides excellent protection for circuits with moderate to high inrush currents typical of industrial equipment. With its robust construction and precision thermo-magnetic release, the CB150C ensures equipment protection and operational safety for heavy industrial and commercial applications.
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 (250A to 500A), specifically calibrated for inductive loads with moderate to high inrush.
Very High-Capacity 50A Protection: Ideal for large industrial welders, heavy machinery, commercial cooking equipment, and high-power motor circuits.
Single Pole Configuration: Protects one phase conductor for single-phase 230V high-capacity industrial circuits.
Industrial-Grade Protection: Handles significant inrush currents from large motors and transformers without nuisance tripping.
Precision Thermo-Magnetic Release: Thermal bimetal strip for accurate overload protection and magnetic solenoid for instantaneous short-circuit response.
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 | CB150C |
| Device Type | Miniature Circuit Breaker (MCB) |
| Pole Configuration | 1 Pole (1P) |
| Current Rating (In) | 50 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 |
| 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 equipment requires a 50A C-Curve single pole breaker?
Large single-phase welders (up to 11kW), industrial grade commercial ovens, heavy-duty conveyor systems, large compressors (8-10HP), and high-power injection molding machines.
2. How does the 500A magnetic trip benefit large motor starting?
A 10HP single-phase motor can draw 400-450A during startup. The 500A magnetic trip threshold prevents nuisance tripping during this critical phase while maintaining full fault protection.
3. Can this breaker handle the load of a large commercial kitchen?
Yes, it's ideal for large commercial ranges, industrial dishwashers, heavy-duty mixers, and high-power griddles requiring 50A single-phase supply with inductive motor components.
4. What is the maximum transformer capacity this 50A C-Curve can support?
Suitable for large isolation transformers up to 10kVA and welding transformers up to 12kVA, handling the magnetizing inrush during energization without nuisance tripping.
5. Why is 10kA breaking capacity critical for 50A industrial applications?
50A circuits are typically installed near main distribution where fault currents can reach 10kA. This rating ensures the breaker can safely interrupt maximum fault current without catastrophic failure.
