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The Live CZ1100C Single Pole MCB is a high-capacity industrial-grade miniature circuit breaker designed to provide reliable protection for very high-power single-phase electrical circuits with significant inductive loads. Rated at 100 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 higher prospective short-circuit currents near main distribution points. The C-curve characteristic (5-10x In) provides excellent protection for circuits with substantial inductive loads while accommodating the inrush currents typical of large industrial equipment. With its robust construction and precision thermo-magnetic release, the CZ1100C ensures equipment protection and operational safety for demanding high-power applications requiring current ratings above the standard range with enhanced interrupting capacity.
High-Capacity Single Pole Protection: Protects one phase conductor for very high-power single-phase 230V circuits up to 100A.
Enhanced 10kA Breaking Capacity: Powerful fault current interruption for installations with higher prospective short-circuit currents up to 10,000 amps.
C-Curve Characteristic: Trips instantaneously at 5-10 times rated current (500A to 1000A), specifically calibrated for high-power circuits with significant inductive loads.
Very High-Capacity 100A Protection with Inductive Tolerance: Ideal for main distribution feeders, large industrial machinery, heavy commercial installations, and high-power inductive loads.
Extended Current Range: Provides protection for applications requiring 100A capacity, beyond standard MCB ratings.
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.
Professional Installation: Standard 35mm DIN-rail mounting with IP20 finger-safe terminals.
| Specification | Details |
|---|---|
| Brand | Live |
| Series | CZ |
| Model Number | CZ1100C |
| Device Type | Miniature Circuit Breaker (MCB) |
| Pole Configuration | 1 Pole (1P) |
| Current Rating (In) | 100 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 | 35 mm² (suitable for 100A) |
| Mounting Type | DIN Rail (35mm) |
| Standards | BS IEC/EN 60898 |
1. What specific applications require a 100A single pole C-Curve MCB with 10kA breaking capacity?
Main distribution feeders for large industrial facilities, high-power welding equipment (up to 23kW), large industrial machinery, commercial building mains, and installations near main transformers where fault currents may approach 10kA.
2. What is the advantage of 10kA breaking capacity combined with 100A C-Curve protection?
Provides essential protection in high-fault installations while handling significant inrush from large motors and transformers, ensuring both safety and operational reliability without nuisance tripping.
3. What is the power capacity of this 100A C-Curve breaker?
Maximum load: 23kW at 230V. For motor applications, suitable for equipment up to 15-18kW depending on starting characteristics and duty cycle, with 10kA fault protection.
4. Why choose C-Curve over B-Curve for 100A high-power industrial applications?
C-Curve (5-10x In) handles starting currents up to 1000A where B-Curve (3-5x In) would trip at 500A, making C-Curve essential for industrial equipment with significant inrush currents.
5. What cable size is mandatory for 100A circuits with 10kA protection?
25mm² copper conductor minimum. 35mm² strongly recommended for longer runs, higher ambient temperatures, and to ensure proper termination capacity. Never use smaller cable for 100A circuits.
