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The Live DCM232C Double Pole DC MCB is a high-capacity specialized direct current miniature circuit breaker engineered to provide reliable protection for higher-power DC electrical circuits in industrial solar photovoltaic systems, large-scale battery storage applications, and heavy-duty DC power distribution networks. Rated at 32 Amps with a C-curve tripping characteristic, this 2-pole breaker safeguards both positive and negative conductors on DC systems up to appropriate voltage ratings. It features a 6kA breaking capacity suitable for demanding DC installations. The C-curve characteristic (5-10x In) provides excellent protection for DC circuits while accommodating the characteristics of DC power sources. With its robust construction and precision thermo-magnetic release, the DCM232C ensures equipment protection and operational safety for industrial renewable energy and heavy-duty DC applications requiring substantial current capacity.
Specialized DC Protection: Engineered specifically for direct current applications, ensuring reliable arc extinction and protection in DC circuits.
Double Pole Switching: Simultaneously protects and switches both positive and negative conductors, ensuring complete circuit isolation during fault conditions.
6kA DC Breaking Capacity: Reliable fault current interruption for demanding DC installations including industrial solar PV and large-scale battery systems.
C-Curve Characteristic: Trips instantaneously at 5-10 times rated current (160A to 320A), specifically calibrated for DC circuits with moderate inrush characteristics.
High-Capacity 32A DC Protection: Ideal for industrial solar PV strings, large battery banks, DC motor circuits, and heavy-duty DC power distribution.
Industrial Renewable Focus: Perfect for industrial solar arrays, large-scale battery energy storage systems, DC distribution boards, and heavy industrial DC power supplies.
Precision Thermo-Magnetic Release: Thermal bimetal strip for accurate overload protection and magnetic solenoid for instantaneous short-circuit response on both poles.
Superior Arc Extinction: Specialized DC arc quenching technology ensures safe interruption of direct current without sustained arcing.
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 | DCM |
| Model Number | DCM232C |
| Device Type | DC Miniature Circuit Breaker (MCB) |
| Pole Configuration | 2 Pole (2P) - Switches Positive + Negative |
| Current Rating (In) | 32 Amperes |
| Trip Curve Type | C Curve (5-10 × In) |
| Rated Voltage | DC (consult rating chart) |
| Rated Breaking Capacity | 6kA (6000 Amps) DC |
| 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) |
| 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 (DC applications) |
1. What are the primary industrial applications for the DCM232C 32A DC MCB?
Industrial solar PV string protection, large-scale battery energy storage systems, DC motor controls, electric vehicle charging infrastructure, industrial DC power distribution, and heavy manufacturing DC circuits.
2. How does 32A DC protection benefit industrial solar installations?
Ideal for protecting larger industrial solar strings of 16-20 panels (depending on wattage), typically supporting systems up to approximately 800-1000W per string at standard DC voltages, suitable for large industrial arrays.
3. What is the advantage of 32A rating over 25A for industrial DC systems?
Provides 28% additional capacity for heavy-duty industrial applications, essential for large-scale solar farms, high-capacity battery banks, or systems where 25A circuits would operate near their limits.
4. Why is C-Curve essential for DC motor and industrial applications?
C-Curve (5-10x In) handles the significant inrush from DC motors, large inverters, and industrial DC-DC converters without nuisance tripping while maintaining full fault protection.
5. What cable size is recommended for 32A DC industrial circuits?
6mm² copper conductor minimum. 10mm² strongly recommended for longer runs to minimize voltage drop and power loss in industrial settings. Both positive and negative conductors must be identical size and type.
