TRANSFORMERS & ELECTRICAL COMPONENTS
APPLICATION / 01
Commercial and public facilities
For building distribution in offices, hospitals, residential developments and transport facilities.
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Product illustration. Actual configuration varies by specification.
Open product image ↗Medium-voltage Switchgear
MKX375–550-12 · Compact switchgear
Compact metal-enclosed withdrawable switchgear for industrial and building distribution.
- Voltage designation
- 12 kV model class
- Selection
- Rated current, fault duty and circuit arrangement
- Busbar current options
- 630 / 1,250 / 1,600 / 2,000 A
- Frequency
- 50 Hz
Price on enquiry · Configuration, quantity & destination
Supply scope, manufacturer information, applicable documents and warranty arrangements are confirmed in the quotation and order.
APPLICATION & DUTY
Where MKX375–550-12 fits
MKX375–550-12 is compact metal-enclosed withdrawable switchgear for industrial, building and substation distribution. The product family combines a cabinet with a mid-mounted withdrawable truck. Cabinet width and insulation arrangement are selected with the primary circuit and installation requirements.
APPLICATION / 02
Industrial and utility circuits
For factory distribution, substations and motor-feeder enquiries requiring a compact withdrawable arrangement.
PRODUCT ENGINEERING
Construction & operating functions
DETAIL / 01
Cabinet and withdrawable truck
The main assembly comprises a cabinet and removable truck. Their interface, current rating and secondary connections must be coordinated as a set.
DETAIL / 02
Four separated compartments
The cabinet is divided into distinct compartments. Cable, busbar, breaker and secondary-equipment requirements should be identified when reviewing the layout.
DETAIL / 03
Front-access arrangement
Installation, commissioning and maintenance access are described from the front. This supports discussions of back-to-back or wall-side layouts, subject to the selected configuration.
DETAIL / 04
Assembled coated-steel enclosure
Formed aluminium-zinc-coated panels and bolted/riveted assembly are described. Cabinet dimensions and equipment placement vary with the selected width.
DETAIL / 05
Insulation variants
Solid-insulation and other compartment arrangements are described across the range. State the insulation variant and associated protection requirements rather than relying on cabinet width alone.
DEFINE THE SELECTED ASSEMBLY
Configuration & installation interfaces
Match the installation drawing, cable routes, clearances and electrical duty for the selected equipment.
Illustrative working scene- Cabinet width
- Identify the required width and available space, then review current and circuit requirements.
- Primary duty
- Provide voltage class, bus current, feeder current and short-circuit duty.
- Secondary system
- Specify protection, metering, control supply and remote signals.
Installation & connection checklist
- Provide cable/busbar entry requirements and terminal sizes.
- Identify front maintenance space and any wall-side constraints.
- For replacements, include truck geometry and secondary connections.
- Specify the exact insulation and enclosure variant in the purchase schedule.
Drawings & configuration documents
Send your selected rating and installation requirements to request the matching dimensional drawing, connection details and technical schedule.
DOCUMENTS · DELIVERY · SUPPORT
Technical coordination & after-sales enquiries
Confirm the order documents
Agree the selected specifications, applicable drawings, inspection records and identification requirements in the quotation and order.
Coordinate delivery
Include quantity, destination, packing requirements and preferred trade terms. Confirm transport scope and the requested delivery schedule with the quotation.
Request technical support
For an existing unit, provide its model, nameplate or order reference and a description of the issue. Include relevant photos or records already available. Warranty and service scope follow the agreed order terms.
Contact about this model ↗START WITH WHAT YOU HAVE
Prepare a quotation for this equipment.
Choose your enquiry type. Start with the information you have.
Price on enquiry
Quotations are prepared for the selected configuration, quantity and destination. Currency, validity, delivery terms, freight and any applicable duties or taxes are specified in the quotation.
Project procurement
New installations & project tenders
Discuss a project ↗What to prepare
Provide voltage, fault duty, circuit schedule and required protection scheme.
Distributor procurement
Model lists & repeat orders
Discuss supply requirements ↗What to prepare
List circuit configurations, ratings, preferred components and destination documentation needs.
Panel & equipment builders
Equipment integration & matching
Discuss an assembly ↗What to prepare
Send the line-up layout, bus interfaces, breaker specification and secondary wiring requirements.
Repair & replacement
Identify an existing unit or part
Identify a replacement ↗What to prepare
Provide the existing panel and breaker details, dimensions, plug connections and interlocks.
Illustrative enquiry scenarios.
Selection checklist for MKX375–550-12
- System voltage, frequency, rated current and prospective fault level
- Bus arrangement and incoming/outgoing circuit schedule
- Breaker or load-switch duty, protection and control supply
- Cable terminations, room layout, access and expansion requirements
- Provide cable/busbar entry requirements and terminal sizes.
- Identify front maintenance space and any wall-side constraints.
- For replacements, include truck geometry and secondary connections.
- Specify the exact insulation and enclosure variant in the purchase schedule.
From enquiry to an agreed supply
- Share the requirementModel, duty, quantity and destination.
- Review the configurationResolve ratings, interfaces and site conditions.
- Agree the technical scheduleScope, drawings, tests, price and delivery terms.
- Confirm delivery documentsAgree packing, identification and the applicable inspection records.
Testing, warranty terms and after-sales scope are to be agreed in the quotation and order documents for the selected configuration.
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Mingkong High & Low Voltage Switchgear Selection Guide · Updated 24 October 2026 · Chinese / English
For a quotation, include your required model, rating, quantity and operating conditions.