ZW43(A)-12 11kV 12kV High Voltage Outdoor Vacuum Circuit Breaker

ZW43(A)-12 Outdoor High Voltage Vacuum Circuit Breaker is a pole-mounted 11kV/12kV medium voltage switchgear designed for outdoor distribution systems.

It features vacuum arc extinguishing, maintenance-free operation, intelligent automation compatibility, and reliable protection for utility and industrial applications.

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Product Details:

 

General Introduction

ZW43-12 model outdoor AC vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in12kV, 50/60Hz power system.

It is applicable for substations, industry and mining, urban and rural electricity power networks, especially applicable in occasions with frequent operation and automatic power distribution network.

It accords with the standard of IEC62271-100 & GB1984: AC high voltage cir cuit breaker, IEC60694 & GB/T11022: HV general technical requirement of switch and control apparatus.

 

Working Condition

1. Altitude: 2000mm;

2. Ambient temperature: -40 ~+45 ;

3. Earthquake intensity: 8 degree;

4. Ice thickness: 10mm;

5. Wind speed: 34m/s (air pressure 700Pa)

 

Main Features of ZW43(A)-12 Outdoor Vacuum Circuit Breaker

  • Vacuum arc extinguishing technology
  • Pole-mounted compact structure
  • High short-circuit breaking capacity
  • Maintenance-free sealed design
  • Excellent outdoor insulation performance
  • Long mechanical and electrical life
  • Suitable for frequent operation
  • Optional permanent magnetic operating mechanism
  • Optional intelligent controller and auto recloser
  • SCADA and remote communication support

The vacuum interrupter adopts solid sealing technology with excellent anti-condensation and anti-pollution performance for harsh outdoor environments.

Advantages of ZW43(A)-12 Outdoor Vacuum Circuit Breaker

High Reliability

The vacuum interrupter provides stable arc extinguishing performance and excellent insulation reliability.

Compact and Lightweight Design

The breaker adopts a compact pole-mounted structure for easy transportation and installation.

Maintenance-Free Operation

The sealed vacuum interrupter and simplified operating mechanism reduce maintenance requirements and operating costs.

Excellent Outdoor Performance

Designed for harsh environments including high humidity, dust, coastal areas, and severe weather conditions.

Smart Grid Compatibility

Supports intelligent controllers and remote communication for modern distribution automation systems.

Technical Specification

No. Item Unit Data
1

2

3

4

5

6

7

8

9

10

11

12

13

14

Rated voltage

Rated frequency

Rated current

Rated short-circuit breaking current

Rated peak withstand current(peak)

4s rated short-time withstand current

Rated short-circuit making current (peak)

Mechanical duration

Breaking time of rated short-circuit breaking current

1min P.F withstand voltage-dry(phase to phase, to earth; across open contacts)

1min P.F withstand voltage-wet

Lightning impulse withstand voltage peak(phase to phase, to earth; across open contacts)

Net weight

Abrasions thickness of contacts

kV

Hz

A

kA

kA

kA

kA

Times

Times

kV

kV

kV

kg

mm

12

50/60

630

20

50

20

50

30000

30

42/49

34

75/85

70

3

Outline Drawing

 

 

 

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