TRANSFORMERS & ELECTRICAL COMPONENTS
APPLICATION / 01
LV incoming and bus circuits
For main distribution switching and protection in compatible low-voltage assemblies.
MINGKONGmkelecsolution.com
Product illustration. Actual configuration varies by specification.
Open product image ↗Circuit Breakers
MKW1 · Air circuit breaker
Intelligent air circuit breaker for low-voltage main distribution and protection.
- Voltage designation
- Low voltage
- Selection
- Rated current and breaking capacity
- Voltage ceiling stated
- 660 / 690 V
- Rated current range
- 200–6,300 A
- Protection
- IP30
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 MKW1 fits
MKW1 is an air circuit-breaker series for low-voltage distribution. Frame selection, current rating and the electronic protection arrangement are chosen for the installation duty. Pole configuration, operating mechanism and communication options must be included in the selection rather than inferred from the series name.
APPLICATION / 02
Selective distribution protection
For projects coordinating main and outgoing protection according to the load and fault study.
PRODUCT ENGINEERING
Construction & operating functions
DETAIL / 01
Frame and current selection
Different frames cover different current ranges. The selected current and installation duty should be checked within the actual frame configuration.
DETAIL / 02
Electronic protection functions
Overload, short-circuit and other protection functions depend on the selected controller. Required settings and coordination should be defined in the protection schedule.
DETAIL / 03
Pole and installation arrangement
Pole configuration and mounting arrangement must suit the network and switchboard. Neutral switching and protection requirements should be stated explicitly.
DETAIL / 04
Auxiliary and communication functions
Remote operation, status contacts and communications are configuration-dependent. Identify the required operating supply and supervisory functions in the enquiry.
DEFINE THE SELECTED ASSEMBLY
Configuration & installation interfaces
Match the installation drawing, cable routes, clearances and electrical duty for the selected equipment.
Illustrative working scene- Circuit duty
- Provide voltage, current and required breaking and withstand ratings.
- Protection
- Specify trip functions, settings requirements and coordination information.
- Accessories
- List operating supply, auxiliary contacts, communication and interlocks.
Installation & connection checklist
- Provide the switchboard mounting and terminal arrangement.
- State three- or four-pole requirements and neutral duty.
- For replacement, submit frame, controller and cradle details where applicable.
- Confirm the complete selected variant and technical ratings before ordering.
Operating conditions for the listed configuration
- Normal altitude up to 2,000 m.
- Normal ambient −5 to +40 °C; 24-hour average up to +35 °C.
- Other cold-climate conditions require a specified configuration.
State any different ambient temperature, altitude, humidity, dust, salt or corrosive exposure when requesting the installation-specific configuration.
RATING DATA
Technical parameters
4Parameter / configuration entries
Units shownCompare values with their units
Selected variantConfirm the matching configuration
Review the listed configuration and applicable units. On a small screen, scroll the table sideways.
| Frame rated current (A) | Rated current options (A) |
|---|---|
| 2000 | 200 / 250 / 350 / 400 / 500 / 630 / 800 / 1000 / 1250 / 1600 / 2000 |
| 3200 | 2000 / 2500 / 3200 |
| 4000 | 3200 / 3600 / 4000 |
| 6300 | 4000 / 5000 / 6300 |
Checked against original distribution catalogue PDF page 53. This is the catalogue frame/current selection table, not a breaking-capacity or trip-setting table. Ratings describe catalogue options, not every possible combination; select the complete configuration in the technical 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
Specify electrical duty, installation arrangement and the required protection coordination.
Distributor procurement
Model lists & repeat orders
Discuss supply requirements ↗What to prepare
List complete breaker variants, pole counts, control voltages and accessory combinations.
Panel & equipment builders
Equipment integration & matching
Discuss an assembly ↗What to prepare
Provide mounting, terminals, operating mechanism and secondary wiring interfaces.
Repair & replacement
Identify an existing unit or part
Identify a replacement ↗What to prepare
Start with the complete nameplate and photos of terminals, mounting, secondary plug and accessories.
Illustrative enquiry scenarios.
Selection checklist for MKW1
- Nameplate and exact existing variant when replacing equipment
- Voltage, current, short-circuit duty and protection settings
- Pole spacing, mounting dimensions and terminal arrangement
- Operating/control voltage, trip functions and auxiliary contacts
- Provide the switchboard mounting and terminal arrangement.
- State three- or four-pole requirements and neutral duty.
- For replacement, submit frame, controller and cradle details where applicable.
- Confirm the complete selected variant and technical ratings before ordering.
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.
Related catalogue series
MINGKONGmkelecsolution.com
Indoor vacuum circuit breaker
Voltage designation: 12 kV
View specifications ↗
MINGKONGmkelecsolution.com
Solid-sealed vacuum circuit breaker
Voltage designation: 7.2–12 kV
View specifications ↗
MINGKONGmkelecsolution.com
Outdoor vacuum circuit breaker
Voltage designation: 12 kV
View specifications ↗
MINGKONGmkelecsolution.com
Outdoor vacuum circuit breaker
Voltage designation: 12 kV
View specifications ↗Product catalogue
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.