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DC miniature circuit breaker (MCB) can have the same protection function as AC MCB, it mainly protects equipment from overload and short circuit protection, but DC MCB is mainly used for DC system, such as photovoltaic solar system, High frequency DC switching power supply system, New DC-related protection systems such as energy system, which are installed in conjunction with other DC protection devices as the main switch for the main circuit or branch circuit.
How to choose the DC MCB?
The selectable voltage is from DC 24V to 1000V and 1500V, and the current is from 1A to 125A. Please select the suitable DC MCB according to the application.
DC uses a unique arc extinguishing and current limiting mechanism that can swiftly break the DC distribution system’s fault current and considerably improve differential coordination.
The DC series of power engineering have good performance and can avoid the aforementioned errors, particularly for the override trip between the test protection panel and the distribution panel in the DC system.
In comparison to similar products both at home and abroad, DC MCB devices have the best level matching qualities.
General
- The TONGOU TOMC7DC-63 1P DC MCB micro circuit breaker’s parameters span from 12 to 250 volts dc. Low current parameters range from 1 amp to 6 amps, medium current from 10 amps to 40 amps, and high current from 50 amps to 63 amps.
- Leakage protection switches will also be added to prevent personal electric shock mishaps.
- The function of a 1P DC MCB is identical to that of a regular MCB.
- All of the devices meet worldwide IEC standards, and they are typically used in photovoltaic solar power generating, fusion, and storage systems.
- In addition to DC circuit breakers, DC fuses, DC surge protectors, and DC isolators are commonly added in a series of solar combiner boxes.
- Short-circuit protection, overload protection, and general circuit breaker functions are all available.
- The primary distinction is that DC MCBs are used in direct current (DC), which is a one-way flow of electric charge.
- Direct current can flow through conductors like wires, as well as semiconductors, insulators, and even vacuum, such as electron or ion beams.
- The current flows in a straight line, unlike alternating current, which moves in a curved pattern (AC).
DC 63A 2P TONGOU’s MCB TOMC7-63 has a nice look, is tiny in size, light in weight, has a high breaking capacity, and is quick to trip.
- Under normal circuit conditions, the 63A 2P DCMCB TOMC7-63 may connect, carry, and break the current.
- It’s a mechanical switching mechanism that can be turned on, held on for a set period of time, or automatically disconnected in the event of a short circuit (such as short-circuit current).
- To improve current limiting capabilities, DC 2P 63A MCB TOMC7-63 can be cascaded.
Special tips for 2P DC MCB
- The MCB is designed for non-professional use by those who aren’t trained, and it doesn’t require any maintenance.
- As long as the parameters and applications listed above are met, an MCB with a “ON-OFF” signaling device is regarded adequate for isolation.
- Surge protective devices, surge arresters, and other devices are recommended to be installed on the upstream line to the MCB as a precaution against potential surge voltage and current occuring on the power input side.
- When an appropriate tripping curve is specified and implemented, an MCB trips and turns off its protected circuit in the event of a malfunction, protecting the user from electric shock.
General
- Advanced structure, reliable performance, strong breaking capacity, attractive appearance, and compact appearance are all advantages of the 40A 2P DC Circuit Breaker MCB TOMC7-63.
- A shell, a handle, an operational mechanism, a contact system, a thermal trip unit, a magnetic trip unit, and an arc extinguisher make up this device.
- The bimetallic strip warms up and deforms when the 2p dc circuit breaker turns on the current.
- When the current overload exceeds a specific level, the bimetallic strip deforms excessively, triggering the trip unit.
- The electromagnetic system immediately pushes the trip unit action to protect electrical equipment when the trip unit passes short-circuit high current: the tripping characteristics have been adjusted before leaving the manufacturer, and there is no need for adjustment or maintenance during operation.
DC 2P 32A MCB TOMC7DC-63 has a 32-ampere current rating, a 6kA breaking capability, and B, C, and D curves are available to accommodate a variety of application requirements. It offers overload and short circuit protection, contact position indication, terminal and pin/fork style Busbar connection, and may be easily placed on a 35mm DIN rail.
General
- 2P 32A DC MCBTOMC7-63 is designed for harsh environments, is rapid breaking, and has good shock and vibration resistance.
- It is appropriate for tough weather conditions and provides accurate overload and short-circuit protection for wires and connected equipment.
- For 3KV DC circuits, the 2P 32A DC MCB TOMC7-63 can also provide over-current and short-circuit protection.
Special tips
- The MCB is designed for non-professional use by those who aren’t trained, and it doesn’t require any maintenance.
- Select a suitable trip curve and properly install it. When a fault occurs, the MCB will trip and close its protected circuit, protecting the user from electric shock.
- Special devices, such as surge protection devices, lightning arresters, and other devices, should be installed on the MCB’s upstream line to prevent potential surge voltage and current from emerging on the power input side.
- As long as the parameters and applications listed above are met, an MCB with a “ON-OFF” signaling device is regarded adequate for isolation.
