Zn85-40.5indoor High-Voltage AC Vacuum Circuit Breaker

Product Details
Customization: Available
Breaking Capacity: High Voltage Circuit Breakers
Operation: Manual Type
Gold Member Since 2025

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  • Zn85-40.5indoor High-Voltage AC Vacuum Circuit Breaker
  • Zn85-40.5indoor High-Voltage AC Vacuum Circuit Breaker
  • Zn85-40.5indoor High-Voltage AC Vacuum Circuit Breaker
  • Zn85-40.5indoor High-Voltage AC Vacuum Circuit Breaker
  • Zn85-40.5indoor High-Voltage AC Vacuum Circuit Breaker
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  • Overview
  • Product Description
  • Product Photos
  • Technical Data
Overview

Basic Info.

Model NO.
ZN85
Speed
Normal Type Circuit Breaker
Arc-extinguishing Medium
Vacuum
Installation
Fixed
Structure
Vcb
Poles Number
3
Type
Circuit Breaker
Function
Conventional Circuit Breaker
Certification
VDE
Rated Voltage
40.5kv
Rated Frequency
50Hz
Rated Current
1250/1600/2000A
Rated Short-Circuit Breaking Current
31.5ka
Transport Package
Carton for Export
Specification
100kg
Trademark
CHYG
Origin
China

Product Description

Product Description
    ZN85-40.5 MV vacuum circuit breaker is indoor MV distribution device of three-phase AC 50Hz, rated voltage 40.5kV, can be matched with JYN35/GBC-35 type switch cabinet. Suitable for control and protection in power plant, substation and power distribution system, especially suitable for frequent operation places. The vacuum circuit breaker is handcart type, with reasonable structure, convenient maintenance, safe and reliable use.
Product Photos
Zn85-40.5indoor High-Voltage AC Vacuum Circuit BreakerZn85-40.5indoor High-Voltage AC Vacuum Circuit BreakerZn85-40.5indoor High-Voltage AC Vacuum Circuit BreakerZn85-40.5indoor High-Voltage AC Vacuum Circuit Breaker

 

Technical Data
Item Unit Parameter
Parameters of voltage, current, life    
Rated voltage kV 40.5 
Rated short time power frequency
withstand voltage (1min)
kV 95 
Rated lightning impulse withstand
voltage (peak)
kV 185 
Rated frequency Hz 50 
Rated current A 1250                                 1600                                 2000
Rated short-circuit breaking current kA 25  31.5 
Rated short-time withstand
current (RMS)
kA 25  31.5 
Rated peak withstand current kA 63  80 
Rated short-circuit closing current kA 63  80 
Rated single / back-to-back capacitor
bank breaking current
A 600/400
Rated short-circuit current duration S
Rated short-circuit current
breaking times
Times 20 
Rated operating sequence   O-0.3s-CO-180s-CO
The main galvanic circle resistance μΩ ≤65
Rated operation voltage   ≌ 220/110
Mechanical life Times ≥ 10000
Mechanical property parameters    
Open clearance between contacts mm 22±2
Overtravel mm 6±1
Contact closing bounce time ms ≤3
Three-phase, switching synchronism ms ≤2
Average opening speed m/s 1.7 ±0.2
Average closing speed m/s 0.75 ±0.2
Opening time (rated voltage) ms ≤90
Closing time (rated voltage) ms ≤60
Allowable wear thickness for
dynamic and static contact
mm

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