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ZN65A-12/T3150-40 Indoor Vacuum Circuit Breaker

The ZN65A-12/T3150-40 indoor vacuum circuit breaker is produced by our company based on the latest technologies at home and abroad. Its rated short-circuit breaking current is 40kA.

In the type test of circuit breakers for power distribution, the breaking number of full capacity for this vacuum circuit breaker reaches 50 and its mechanical life is up to 60,000 times. This switching device has also passed the type test of contact breakers. The DC component accounts for more than 70% of the non-symmetrical breaking current.

Simple in structure and easy to maintain, this indoor vacuum circuit breaker features stable and reliable operation. It is equipped with a spring energy storage type operating mechanism.

With excellent breaking performance and long mechanical life, this vacuum circuit breaker can be used for the control and protection of outlet of small generator, steelmaking electric furnace, and other electrical equipment.

Use Environment
Ordinary Type Altitude: <1,000m
Ambient Temperature: -25℃~+40℃ (-40℃ is fine for special product)
Relative Humidity: Daily average≤95%, monthly average≤90%
Earthquake Intensity<8degree, no fire, explosion, corrosive gases, or severe shaking
working-conditions Type
The product can be used in places where there is condensation and filth.
Technical Parameters
Item Unit Value
Rated Voltage kV 12
Rated Current A 1600 2000 2500 3150
Rated Short-circuit Breaking Current kA 40
Rated Peak Withstand Current kA 100
Rated Short-time Withstand Current kA 40
Rated Short-circuit Closing Current (peak value) kA 100
Rated Short Circuit Duration s 4
Rated Short-circuit Current Breaking Times times 50
Rated Operating Sequence   O-0.3s-CO-180s-CO
Rated Frequency Hz 50
Lightning Impulse Withstand Voltage (Peak Value) kV 75
1min Power Frequency Withstand Voltage kV 42
Closing Time ms 45-85(47±7)
Opening Time ms 45-85(52±7)
Breaking Time ms ≤ 80
Mechanical Life times 60,000
Rated Power of the Energy Storage Motor W 200
Rated Voltage of the Energy Storage Motor V AC, DC 110, 220
Energy Storage Time s ≤15
Rated Voltage of the Closing and Opening Electromagnet V AC, DC 110.220
Rated Current of the Auxiliary Switch A AC10, DC5

As a professional indoor vacuum circuit breaker manufacturer and supplier in China, we also offer high voltage vacuum contactor, withdrawable switchgear, indoor vacuum circuit breaker for generator, indoor single pole vacuum circuit breaker, and much more.

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