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Home > Products > Vacuum Circuit Breake > ZN85-40.5 Vacuum Circuit Breaker

ZN85-40.5 Vacuum Circuit Breaker

Basic Info

Model No.: VCB 40.5/2000-31.5

Product Description


Product Type: Indoor AC HV VCB



Product Information



ZN85-40.5(3AV3) indoor Vacuum circuit breaker is a special design which produced by our company and Xi'an High-voltage Electric Apparatus Institute. 40.5kV rated voltage, three-phase and AC 50/60HZ. It applies to mining firms, power house and substation acting as protection and control electric apparatus. It is also applicable in occasions with frequent operation.



Product Features



1. The arc-extinguish chamber is on the upper part and the Mechanism is on the lower part. This structure isconvenient for debug.

2. Complex insulating structire using air and organic material; Compactable dimension and small weight.

3. Vacuum arc-extinguish chamber of Cutler-Hammer Company(USA) and domestic ZMD are both applicable for the VCB.

4. Simple spring operation mechanism is free from maintenance within 10000 times of operations.

5. Lead-screw propeller, easy and stable operation and good self-locking capability.


Specification Sheet:




Name Unit Data
Rated Voltage kV 36
Rated current A 1250 1600 2000 2500 3150
Rated power-frequency withstand voltage kV 95
Rated lighting impulse withstand voltage kV 185
Rated short-circuit breaking current kA 20 25 31.5
Rated short-circuit making current kA 50 63 80
Rated withstand current(peak) kA 50 63 80
Rated duration of short circuit S 4
Operating cycles at rated short-circuit breaking current Times 30
Mechanical endurance Times 20000
Make time ms <75
Breaking time ms <65
Rated single capacitor bank breaking current A 630
Rated back-to-back capacitor bank breaking current A 400
Rated voltage of store energy motor V DC220, 110 AC220, 110
Power for opening and closing coil W 245
Overall dimension (width X depth X height) mm 588 X 429 X 563
Weight kg 100

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Product Categories : Vacuum Circuit Breake