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Installation must be carried out by a qualified electrician.
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Suitable for indoor use.
The Live DCM210C Double Pole DC MCB is a specialized direct current miniature circuit breaker engineered to provide reliable protection for DC electrical circuits in solar photovoltaic systems, battery storage applications, and various DC power distribution networks. Rated at 10 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 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 DCM210C ensures equipment protection and operational safety for renewable energy and industrial DC applications.
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 standard DC installations including solar PV and battery systems.
C-Curve Characteristic: Trips instantaneously at 5-10 times rated current (50A to 100A), specifically calibrated for DC circuits with moderate inrush characteristics.
Versatile 10A DC Protection: Ideal for small to medium solar PV strings, battery banks, DC lighting circuits, and control systems.
Renewable Energy Focus: Perfect for solar photovoltaic arrays, battery storage systems, DC distribution boards, and telecom 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 | DCM210C |
| Device Type | DC Miniature Circuit Breaker (MCB) |
| Pole Configuration | 2 Pole (2P) - Switches Positive + Negative |
| Current Rating (In) | 10 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 applications for the DCM210C 10A DC MCB?
Solar PV string protection (medium panels), battery storage systems, DC lighting circuits, telecommunications equipment, RV and marine DC systems, and industrial control circuits.
2. How does 10A DC protection benefit solar installations?
Ideal for protecting solar strings of 4-6 panels (depending on wattage), typically supporting systems up to approximately 250-300W per string at standard DC voltages, providing optimal balance between capacity and protection.
3. Why is double pole switching essential for DC systems?
DC systems require simultaneous disconnection of both positive and negative conductors to ensure complete isolation, prevent potential differences, and ensure safety during maintenance without floating conductors.
4. What makes DC MCBs different from AC MCBs for solar applications?
DC MCBs incorporate specialized arc chutes and magnetic blowouts to extinguish DC arcs which have no natural zero-crossing, ensuring reliable interruption and preventing sustained arcing that could cause fire.
5. What cable size is recommended for 10A DC circuits?
1.5mm² copper conductor minimum. 2.5mm² recommended for longer runs to minimize voltage drop. Both positive and negative conductors must be identical size and type.
