Overview
The MNS Series Three Phase Switchgear Cabinet is a factory-assembled, modular complete switchgear system built on a standardized E=25mm module framework. Rated for AC 50–60Hz systems at operating voltages up to 660V, this three phase switchgear cabinet delivers high-density power distribution, motor control, and load management across the full scope of industrial and infrastructure applications.
Designed for procurement teams, EPC contractors, and facility developers who require IEC-compliant complete switchgear with proven field performance, the MNS series combines drawout functional unit architecture with robust structural protection - providing both operational reliability and on-site serviceability without disconnecting the main busbar.
Technical Specifications
Product drawing
| Parameter | Specification |
|---|---|
| Rated Frequency | 50–60 Hz |
| Rated Operating Voltage | 380V / 660V |
| Rated Insulation Voltage | 660V |
| Horizontal Busbar Rated Current | 630–4000A |
| Vertical Busbar Rated Current | Up to 1000A |
| Horizontal Busbar Short-Time Withstand Current | 50–80 kA / 105–176 kA |
| Vertical Busbar Short-Time Withstand Current | 50 kA / 150 kA |
| Enclosure Protection Rating | IP30 / IP40 / IP54* |
| Standard Module | E = 25mm |
| Compliance Standards | IEC 60439, VDE660, GB7251-97, JB/T9661 |
| Cabinet Dimensions H×W×D (mm) | 2200 × 400/600/800/1000 × 600/1000 |
| Max Outgoing Circuits per Functional Unit | Up to 36 circuits |
*IP54 is available as a configuration option; not recommended in environments with significant derating requirements. Consult Gangheng engineering team for site-specific recommendations.
PC Cabinet Configuration:
| Height (mm) | Width (mm) | Depth (mm) | Rated Current |
|---|---|---|---|
| 2200 | 400 | 1000 | Fe-1250 |
| 2200 | 600 | 1000 | ME630-1605 |
| 2200 | 800 | 1000 | Fe-2500 |
| 2200 | 800 | 1000 | Fe-3200 / ME2000-2505 |
| 2200 | 1000 | 1000 | Fe-4000 / ME3205 |
| 2200 | 1200 | 1000 | ME-400S |
MCC Cabinet Configuration:
| Type | Height (mm) | Width (mm) | Depth B1/B2 (mm) | Depth T (mm) |
|---|---|---|---|---|
| Single-Front MCC | 2200 | 1000 | 600 / 400 | 400 / 600 |
| Double-Front MCC | 2200 | 1000 | 400 | 1000 |
Operating Environment Requirements
| Ambient Temperature | −5°C to +40°C (24-hour average ≤ +35°C) |
| Relative Humidity | ≤50% at +40°C; up to 90% permissible at +20°C |
| Installation Altitude | ≤ 2000m above sea level |
| Transport / Storage Temperature | −25°C to +55°C; up to +70°C for periods under 24 hours |
| Vibration / Chemical Exposure | Installation sites should be free from severe vibration, mechanical shock, and corrosive atmosphere |
Structural Design
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Each cabinet is internally organized into three isolated compartments:
Main Busbar Compartment
houses the horizontal and vertical busbar system; fully separated from device and cable zones to contain fault propagation.
Device / Functional Unit Compartment
accommodates individual drawout modules; each unit operates independently and can be withdrawn for maintenance while the busbar remains live.
Cable Compartment
segregated cable entry and exit zone; supports top-in/top-out, top-in/bottom-out, and bottom-in/bottom-out routing configurations.
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Internal Layout by Cabinet Type:
Power Centre (PC) cabinets position the busbar compartment at the rear, functional units at the upper front or left side, and the cable compartment at the lower front or right side.
Motor Control Centre (MCC) cabinets are available in single-front and double-front configurations. The double-front design reduces total cabinet footprint while maintaining full per-side access, making it well suited to facilities where floor space is constrained.
Core Advantages
Modular Architecture for Scalable Deployment
The standardized E=25mm module system allows each functional unit within this three phase switchgear cabinet to be independently configured, added, or replaced. This enables the complete switchgear assembly to scale alongside project requirements without full-system replacement - reducing long-term capital expenditure.
Live-Bus Drawout Maintenance
Individual drawout functional units can be inserted or withdrawn while the main busbar remains energized. This eliminates the need for full shutdown during routine inspection or module replacement - a critical operational advantage for power plants, data centers, and continuous-process industrial facilities.
High-Density Output Capacity
A single MNS functional unit accommodates up to 36 outgoing feeder circuits. This high-density configuration reduces the total number of cabinets required per installation, lowering both material costs and installation footprint - particularly valuable in space-constrained electrical rooms within commercial buildings, industrial parks, and residential infrastructure.
Climate-Ready Protection Options
The MNS complete switchgear is available in IP30, IP40, and IP54 protection ratings. The IP40 and IP54 options are specified for projects in environments with elevated dust exposure or humidity - directly addressing the installation conditions common to Middle Eastern industrial sites, African mining operations, and tropical infrastructure projects.
Full IEC/GB Compliance for International Tendering
Built to IEC 60439, GB7251-97, and JB/T9661 standards, the MNS cabinet meets the technical compliance requirements for international EPC procurement, utility tenders, and government-sponsored infrastructure projects. ANSI/IEEE and BS standard compliance can be accommodated upon request.
Flame-Retardant Engineering Plastic Isolation Components
Extensive use of high-strength, flame-retardant engineering plastics throughout the functional unit compartments provides effective isolation of live parts, reduces the risk of arc fault propagation between adjacent units, and enhances both equipment safety and personnel protection during maintenance operations.
Application Sectors
Power Generation & Substation Auxiliary Systems
The MNS three phase switchgear cabinet serves as a core low-voltage distribution and control component within power plant auxiliary systems and substation low-voltage switchgear rooms, managing station service loads with hot-swap capable functional units that minimize downtime.
Oil, Gas & Petrochemical Facilities
Heavy industrial process environments require switchgear that maintains reliable performance under sustained load, chemical exposure risk, and temperature variation. The MNS series meets these demands through its segregated compartment design and corrosion-resistant enclosure treatment.
Mining & Mineral Processing Operations
Remote mine sites and ore processing facilities place exceptional demands on electrical infrastructure reliability. The MNS cabinet's drawout architecture enables on-site module servicing without specialist support teams - reducing operational interruptions in locations far from service infrastructure.
Industrial Manufacturing Parks & EPC Projects
For engineering procurement and construction contractors managing multi-building or campus-scale electrical installations, the MNS series provides a standardized, scalable complete switchgear platform that can be configured to project-specific load schedules and replicated across multiple distribution points.
Renewable Energy Integration
The MNS series is deployed as the low-voltage distribution component in solar and wind power substation configurations, managing power flow from step-up transformer LV terminals to site distribution networks. Its modular structure supports phased capacity additions as generation assets expand.
Commercial Buildings & High-Rise Infrastructure
Shopping centres, hospitals, airports, and high-rise office developments require low-voltage complete switchgear with high circuit density and minimal maintenance downtime. The MNS cabinet's up-to-36-circuit output density and live-bus serviceability directly address both requirements.
About Gangheng Electric
Zhejiang Gangheng Electric Co., Ltd. has manufactured high and low voltage electrical equipment since 2004. Operating as a National High-Tech Enterprise from its production base in Jiangshan City, Zhejiang Province - strategically located near the G3 Beijing-Taipei Expressway and Zhejiang-Jiangxi Railway - the company supplies complete switchgear, transformers, and substation equipment to domestic and international markets.
Manufacturing Capabilities
The production facility spans 5,000–20,000 m² and is equipped with CNC punch presses, CNC bending machines, laser cutting machines, copper busbar bending machines, and a full suite of electrical testing equipment.
Certifications & Quality Standards
ISO 9001 Quality Management System / ISO 14001 Environmental Management System / OHSAS 18001 Occupational Health & Safety / CQC Product Certification / 5 Utility Model Patents / State Grid e-commerce platform listed supplier
Supply Track Record:
Gangheng Electric holds a verified supply record with China Railway Construction Corporation (CRCC), one of China's largest state-owned infrastructure contractors, and is a qualified supplier to the State Grid. Export markets include Iran, Kyrgyzstan, Zimbabwe, Tanzania, and ongoing Middle East and Africa region projects.
⬅A recent Tanzania deployment of the KYN61-40.5 armored removable switchgear achieved full commissioning - from container unpacking to live energization - within five days, prompting the client's CEO to record a personal commendation video.
Warranty & After-Sales Support: 12-month free warranty from acceptance date. Hidden defect liability coverage extending 5 years beyond warranty expiry. 24/7 on-site technical support. All equipment supplied is brand-new and unused. Spare parts pricing capped at market rate.
Frequently Asked Questions
Q: What is the difference between the PC and MCC configuration in the MNS three phase switchgear cabinet?
A: The Power Centre (PC) cabinet handles main power distribution through the horizontal busbar and is typically used as the primary incoming distribution point. The Motor Control Centre (MCC) cabinet is organized around individual motor control and small-power distribution functional units, and is available in single-front or double-front configurations depending on installation space constraints. Both types can be combined within a single MNS switchgear lineup.
Q: Can the MNS complete switchgear be customized for non-standard project specifications?
A: Yes. Gangheng Electric has extensive experience accepting non-standard product configurations. Customers with project-specific requirements - including alternative busbar ratings, non-standard cabinet dimensions, or specific protective relay integration - are encouraged to submit technical drawings and equipment schedules for a customized quotation.
Q: Is this switchgear suitable for deployment in high-temperature regions such as the Middle East or sub-Saharan Africa?
A: The MNS series is rated for ambient temperatures up to +40°C and is available in IP40/IP54 protection ratings suitable for dusty or humid environments. For sites with temperatures consistently approaching the rated ceiling, or with specific ventilation constraints, Gangheng's engineering team recommends a site condition review prior to final cabinet specification to confirm derating requirements.
Q: What international compliance standards does this complete switchgear meet, and can it be adapted for markets requiring ANSI or BS standards?
A: The MNS Series is manufactured in conformance with IEC 60439, VDE660, GB7251-97, and JB/T9661. For projects requiring compliance with ANSI/IEEE (North American) or BS (British) standards, Gangheng Electric can accommodate these requirements upon request - making the MNS an adaptable complete switchgear solution for internationally tendered infrastructure projects.
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