Switchgear / Switch Cabinet
Standards
GB / IEC 60076
Testing
Routine report
Origin
China
Switchgear & Switch Cabinets
Type MNS Low-Voltage Assembled Switchgear
The Type MNS low-voltage assembled switchgear is a product designed and developed based on imported switchgear. It is suitable for AC 50 (60) Hz systems with a rated operating voltage of 660V and below. It can control equipment for power generation, power transmission, power distribution, electric energy conversion, and electric energy consumption, meeting the power control needs of multiple scenarios.
- Product type
- Switchgear / Switch Cabinet
- Rated voltage
- 0.4 kV / 12 kV / 40.5 kV (model dependent)
- Busbar
- Copper or aluminium, project-specific current rating
- Protection
- IP30-IP54, form 3b/4a options
- Standards
- IEC 61439 / GB 7251 series
- Configuration
- Fixed, draw-out or ring-main unit
Final ratings, losses, impedance and dimensions are confirmed on the approved datasheet. Website values are for family selection.
- Routine test report with the unit
- English GA drawing and O&M manual
- Copper or aluminium winding options
- 50 Hz / 60 Hz and harsh-site options
Product overview
Product Overview and Application Scenarios
The Type MNS low-voltage assembled switchgear is a product designed and developed based on imported switchgear. It is suitable for AC 50 (60) Hz systems with a rated operating voltage of 660V and below. It can control equipment for power generation, power transmission, power distribution, electric energy conversion, and electric energy consumption, meeting the power control needs of multiple scenarios.
Compliance with Standards and Component Features
This equipment complies with the national standards GB7251-1 "Low-Voltage Assembled Switchgear and Controlgear" and JB/T9661 "Low-Voltage Drawout-Type Assembled Switchgear", as well as the international standard IEC439. It can form cabinet frame structures and drawer units of different schemes, adopting high-strength flame-retardant engineering plastic components to enhance protective safety performance. The drawer units feature small size, strong functionality, high interchangeability, convenient replacement and maintenance, and reliable contact.
Structural and Protective Features
The basic cabinet frame of the device adopts a combined structure of 0-section profiles. All structural components are either galvanized or made of aluminum-zinc coated steel plates, which are fastened into a basic frame using self-tapping locking screws and Grade 8.8 hexagon screws. Then, the complete device is formed by assembling components such as doors and sealing plates. The dimensions of the internal components and compartment dimensions of the device are modularized (modular unit E=25mm), and the cabinet protection level ranges from IP3X to IP4X.
Design features
What the design is built around
Modular architecture
Fixed, draw-out and ring-main configurations match the protection and operating philosophy.
Safety interlock
Mechanical interlocks and clear compartment separation support safe operation.
Busbar system
Copper or aluminium busbars are sized for the specified current and short-circuit level.
Type-tested design
Designs follow IEC 61439 / GB 7251 and are supplied with test documentation.
Typical specification
Specifications to confirm on the datasheet
| Product type | Switchgear / Switch Cabinet |
|---|---|
| Rated voltage | 0.4 kV / 12 kV / 40.5 kV (model dependent) |
| Busbar | Copper or aluminium, project-specific current rating |
| Protection | IP30-IP54, form 3b/4a options |
| Standards | IEC 61439 / GB 7251 series |
| Configuration | Fixed, draw-out or ring-main unit |
| Finish | Powder-coated steel, project colour |
| Documentation | Type test reports, routine test certificate, GA drawings |
The table is a family-level starting point. The approved datasheet fixes the guaranteed values, drawing dimensions and test plan for the specific order.
Typical applications
- Low-voltage distribution
- MV ring-main networks
- Industrial control rooms
- Commercial buildings
- Renewable-energy auxiliary systems
Confirm before ordering
- Rated capacity, voltage ratio and tap range
- Impedance, fault level and parallel operation
- Ambient temperature, altitude and enclosure
- Winding material, losses and efficiency class
- Terminations, protection and monitoring
- Tests, inspection, packing and shipping limits
Buyer questions
FAQ for Type MNS Low-Voltage Assembled Switchgear
What is Type MNS Low-Voltage Assembled Switchgear best used for?
How is a switch cabinet matched to a transformer?
Which standards and tests are supplied?
Can the transformer be customised for 60 Hz or a hot climate?
How do I choose between copper and aluminium windings?
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