Rated working voltage: AC 400V / 690V (50/60Hz)
Rated insulation voltage: AC 800V / 1000V
Rated current:
Horizontal bus: Typically ranges from 800A to 6300A (common segmentation points such as 1600A, 2500A, 3200A, 4000A, 5000A, 6300A).
Vertical bus/distribution bus: Typically ranges from 400A to 2000A.
Rated short-time withstand current:
Horizontal bus: Typically up to 100kA (effective value) / 1s (common levels such as 50kA, 65kA, 85kA, 100kA).
Vertical busbar/distribution busbar: Typically up to 85kA (effective value) / 1s (common levels are 50kA, 65kA, 85kA).
Rated peak withstand current: Typically up to 220kA (corresponding to Icw).
Functional unit (drawer) rated current: From 16A to 1600A (or higher, depending on circuit breaker type and frame).
Breaking capacity:
Depends on the circuit breaker installed inside (MCCB, ACB).
Can support circuit breakers with high breaking capacity (e.g. Icu/Ics up to 100kA @ 400V).
Protection class:
Cabinet: Typically IP40 (according to IEC 60529), higher classes (e.g. IP41, IP42, IP54) are optional.
Functional unit (drawer) compartment: usually IP20 (when the door is closed), IP00 when in operation.
Internal isolation form: in accordance with IEC 61439 standard, commonly Form 3b or Form 4b (to achieve complete isolation between functional units and between functional units and busbars).
Modular design:
Adopting standard module (E=25mm) design, the functional unit size is standardized (such as 1/4, 1/2, 1, 2, 3, 4 units).
The drawer unit is highly uniform, which is convenient for arrangement, expansion, transformation and maintenance.
The cabinet structure can be flexibly spliced and combined to meet different size and layout requirements.
High reliability and safety:
Sturdy structure: The frame is made of high-strength aluminum-zinc coated steel plate or high-quality cold-rolled steel plate, which is connected by multiple bending and riveting/bolting. The structure is stable and has good anti-dynamic/thermal stability.
Five-protection interlocking: The perfect mechanical interlocking mechanism ensures safe operation (preventing the disconnector from opening and closing with load, preventing the circuit breaker from opening and closing by mistake, preventing the energized interval from being mistakenly entered, preventing the grounding wire from being hung with power, and preventing the switch from closing with the grounding wire).
Reliable separation: The functional unit room, busbar room, and cable room are effectively isolated by metal partitions to improve safety and reliability.
High protection level: Ensure that internal components are protected from the intrusion of dust and foreign objects.
Drawer unit technology:
"Shake in and shake out" operation: The drawer is operated by a crank handle and has three clear positions: connection/test/disconnection.
Primary connectors: The main circuit uses large-capacity, low-contact resistance, and long-life connectors to ensure reliable connection and low energy consumption. Hot plugging is usually supported (under specific conditions).
Secondary connectors: The control circuit uses reliable plug-in connections for easy commissioning and maintenance.
Mechanical position indication and locking: Clearly indicate the drawer position, and there is a locking device to prevent accidental movement.
Optimized busbar system:
Use high-conductivity copper busbars or high-quality aluminum busbars.
Optimized design reduces impedance, reduces losses and heat generation.
Good heat dissipation structure design.
Surface treatment (such as tin plating, silver plating) improves conductivity and corrosion resistance.
Easy to install and maintain:
Modular design and drawer technology greatly simplify installation, commissioning, replacement and maintenance.
Front-side operation and wiring (cables can enter and exit from the top or bottom) save space.
Functional units can be quickly pulled out for easy maintenance and replacement.
Flexibility:
Can accommodate circuit breakers of various brands (such as ABB Emax, Tmax series, etc.), contactors, thermal relays, soft starters, inverters and other components.
Supports multiple inlet and outlet methods (upper/lower inlet and upper/lower outlet).
Easy to expand and transform.
Intelligent options:
Intelligent instruments and communication modules (such as Modbus, Profibus, Ethernet, etc.) can be integrated.
Supports intelligent functions such as power management, status monitoring, fault diagnosis, etc. to achieve remote monitoring and management.
Compliance with standards and certifications:
Strictly follow international standards: IEC 61439-1/-2, GB 7251.1/-12 (China National Standard CCC Certification), etc.
Passed relevant safety certifications and type tests.
Main power distribution and motor control center of industrial plants
Power distribution system of commercial buildings (office buildings, shopping malls, hotels)
Infrastructure (airports, subways, hospitals, schools)
Data centers and telecommunications rooms
Grid-connected power distribution of renewable energy power generation systems (photovoltaic, wind power)
