Products Switchgear Low-Voltage Switchgear

Modular Mcb Main Distribution Panel / Switch Cabinet

Material: carbon steel
Color: Gray
Place of Origin: Shanxi, China
Application: Industrial
Product Category: Low-Voltage Switchgear

This modular MCB main distribution panel / switchgear is suitable for AC 380V/220V three‑phase four‑wire distribution systems and serves as the main distribution unit for final‑stage power distribution. Adopting a modular design, it is integrated with miniature circuit breakers (MCBs), disconnectors, metering instruments, surge protection devices and other components. It realizes power distribution, control and protection for multi‑circuit loads. Featuring compact dimensions and easy installation with flexible circuit configuration, it meets final‑stage power‑distribution requirements for commercial, industrial and civil buildings.

‑ Rated Voltage: AC 380V/220V
‑ Rated Current: 63A ~ 400A (customizable)
‑ Poles: 4P
‑ Protection Class: IP30
‑ Short‑circuit Withstand Current: ≥15kA‑60kA
‑ Compliance Standards: GB 7251.3, IEC 61439‑3
‑ Main Switch: disconnector / circuit breaker; outgoing circuits fitted with miniature circuit breakers (MCBs). Circuit quantity customizable (standard: 16‑48 circuits)
‑ Protection Functions: overload, short‑circuit, earth‑leakage, over‑voltage and under‑voltage protection
‑ Optional Features: energy metering, surge protection, fire‑alarm interlock, remote monitoring

① Modular construction allows flexible addition, removal and replacement of MCB circuits to match power‑consumption points for various applications. Distribution circuits can be adjusted for business upgrades or renovation without replacing the entire panel.
② Compact size enables convenient installation in equipment rooms, ceiling cavities or on walls, well‑suited for final‑stage power distribution in commercial buildings, office blocks and residential premises.
③ Multi‑circuit layout enables separate power distribution for lighting, sockets, air‑conditioners and power loads. Each circuit is independently protected; a fault trips only the affected circuit while other circuits remain operational.
④ Built‑in surge protection device effectively absorbs grid surges and lightning‑induced over‑voltages, safeguarding end‑user equipment against voltage‑surge damage.
⑤ Optional intelligent monitoring function tracks real‑time power‑consumption status and fault data for each circuit to facilitate operation and maintenance.

‑ Individual power distribution for retail units in commercial complexes
‑ Floor‑level power distribution for office buildings
‑ Indoor power distribution for residential buildings
‑ Power distribution for hotel guest rooms
‑ Final‑stage power distribution for small factory workshops
‑ Power distribution for school classrooms
‑ Power distribution for hospital wards
‑ Lighting and socket power distribution in shopping malls

Q1: What is the difference between a modular MCB main distribution panel and a conventional distribution box?

A: The modular MCB main distribution panel features a modular structure where MCB circuits can be flexibly added, removed or replaced to adapt to changing power demands. Circuits can be reconfigured as site conditions evolve. Conventional distribution boxes have fixed circuits with limited adjustability. Meanwhile, the main distribution panel supports higher rated current and a larger number of circuits, making it suitable as the main power‑distribution unit for floors or zones.

Q2: What is the maximum number of available circuits?

A: The standard model supports up to 48 circuits. Higher circuit counts can be custom‑engineered to satisfy final‑stage distribution requirements for large‑scale buildings.

Q3: Does it come with surge protection?

A: A surge protection device is supplied as standard. It efficiently absorbs grid surges and lightning‑caused over‑voltages to protect end‑use electrical equipment.