TRANSFORMERS & ELECTRICAL COMPONENTS
APPLICATION / 01
Overhead distribution branches
For selected branch and customer-boundary switching duties.
MINGKONGmkelecsolution.com
Product illustration. Actual configuration varies by specification.
Open product image ↗Circuit Breakers
ZW32-12F · Outdoor vacuum circuit breaker
Outdoor vacuum boundary circuit breaker for overhead distribution branches.
- Voltage designation
- 12 kV
- Selection
- Rated current and breaking capacity
- Rated current options
- 630 / 1,250 A
- Frequency
- 50 Hz
- Breaking current options
- 20 / 25 kA
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 ZW32-12F fits
ZW32 is an outdoor vacuum circuit-breaker arrangement for overhead distribution and customer-boundary applications. With the selected controller, it can provide monitoring and coordinated fault-protection functions. Network grounding, fault-detection requirements and upstream protection must be considered together.
APPLICATION / 02
Automated feeder protection
For installations requiring configured fault detection, status monitoring and communication functions.
PRODUCT ENGINEERING
Construction & operating functions
DETAIL / 01
Outdoor vacuum switching
The breaker provides the selected outdoor switching duty using vacuum interruption. Rated duties and environmental suitability must be matched to the installation.
DETAIL / 02
Controller-dependent functions
Overcurrent, short-circuit and ground-fault functions depend on the selected controller and network conditions. The protection-function list should be agreed explicitly.
DETAIL / 03
Isolation option
An isolator option is identified within the model arrangement. Required visible isolation and operating interlocks should be specified with the complete assembly.
DETAIL / 04
Coordination with the network
Fault isolation and any automation sequence require coordination with upstream and downstream devices. Grounding method affects the protection design.
DEFINE THE SELECTED ASSEMBLY
Configuration & installation interfaces
Match the installation drawing, cable routes, clearances and electrical duty for the selected equipment.
Illustrative working scene- Network duty
- Provide operating voltage, load current, fault duty and grounding arrangement.
- Protection
- State required detection, trip and automation functions.
- Control
- Specify auxiliary power, controller and communications.
Installation & connection checklist
- Provide pole-mounting and conductor-connection requirements.
- Identify measurement inputs and protection coordination information.
- State the required isolator and interlock arrangement.
- For replacement, include breaker and controller identification.
Operating conditions for the listed configuration
- Altitude up to 2,000 m; ambient −40 to +40 °C.
- At +25 °C: daily average relative humidity up to 95%, monthly up to 90%.
- Catalogue wind-pressure limit: 700 Pa.
State any different ambient temperature, altitude, humidity, dust, salt or corrosive exposure when requesting the installation-specific configuration.
RATING DATA
Technical parameters
10Parameter / 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.
| Parameter | Catalogue value |
|---|---|
| Rated voltage | 12 kV |
| Rated current options | 630 / 1,250 A |
| Rated frequency | 50 Hz |
| Dry 1 min withstand, phase/earth and open gap | 42 / 48 kV |
| Wet 1 min withstand, external insulation | 34 kV |
| Short-circuit breaking current options | 20 / 25 kA |
| Peak withstand/making current options | 50 / 63 kA |
| Short-time withstand (4 s) options | 20 / 25 kA |
| Mechanical life stated in catalogue | 10,000 operations |
| Secondary-circuit 1 min withstand | 2 kV |
Checked against original distribution catalogue PDF page 51. 20 and 25 kA variants correspond to 50 and 63 kA peak ratings. The impulse entry with conflicting units is excluded. 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 ZW32-12F
- 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 pole-mounting and conductor-connection requirements.
- Identify measurement inputs and protection coordination information.
- State the required isolator and interlock arrangement.
- For replacement, include breaker and controller identification.
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.