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The Live CZ180C Single Pole MCB is a high-capacity industrial-grade miniature circuit breaker designed to provide reliable protection for high-power single-phase electrical circuits with significant inductive loads. Rated at 80 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 CZ180C 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 high-power single-phase 230V circuits up to 80A.
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 (400A to 800A), specifically calibrated for high-power circuits with significant inductive loads.
High-Capacity 80A Protection with Inductive Tolerance: Ideal for main distribution feeders, large industrial machinery, commercial installations, and heavy-duty inductive loads.
Extended Current Range: Provides protection for applications requiring 80A 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 | CZ180C |
| Device Type | Miniature Circuit Breaker (MCB) |
| Pole Configuration | 1 Pole (1P) |
| Current Rating (In) | 80 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 | 25-35 mm² (suitable for 80A) |
| Mounting Type | DIN Rail (35mm) |
| Standards | BS IEC/EN 60898 |
1. What specific applications require an 80A single pole C-Curve MCB with 10kA breaking capacity?
Main distribution feeders for large industrial facilities, high-power welding equipment (up to 18kW), large industrial machinery, commercial building mains, and installations near distribution boards where fault currents may be elevated.
2. What is the advantage of 10kA breaking capacity combined with 80A C-Curve protection?
Provides enhanced 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 80A C-Curve breaker?
Maximum load: 18.4kW at 230V. For motor applications, suitable for equipment up to 12-15kW depending on starting characteristics and duty cycle, with 10kA fault protection.
4. Why choose C-Curve over B-Curve for 80A high-power industrial applications?
C-Curve (5-10x In) handles starting currents up to 800A where B-Curve (3-5x In) would trip at 400A, making C-Curve essential for industrial equipment with significant inrush currents.
5. What cable size is recommended for 80A circuits with 10kA protection?
16mm² copper conductor minimum. 25mm² strongly recommended for longer runs, higher ambient temperatures, and to ensure proper termination capacity. Never use smaller cable for 80A circuits.
