ZW18A-40.5/T1250-2500/25-31.5 Outdoor Vacuum Circuit Breaker

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With the rated voltage of 40.5kV, the ZW18A-40.5/T1250-2500/25-31.5 outdoor vacuum circuit breaker is a three-phase AC 50Hz high voltage product. It can be used as the control or protection switch in substations, power planets, as well as industrial and mining enterprises, particularly suitable for occasions requiring frequent operations.

Use Environment
1. Altitude: ≤2,000m
2. Ambient Temperature: -40℃~ 40℃
3. Wind Pressure: ≤700Pa (wind speed ≤34m/s)
4. Earthquake Intensity: ≤8degree
5. Degree of Air Contamination: Grade IV

Note: Vacuum circuit breakers applicable to places with the altitude higher than 2,000m can also be provided, but customers should mention this when ordering.

Technical Parameters

Item		Unit	Value
Rated Voltage		kV	40.5
Rated Frequency		Hz	50
Rated Insulation Level	1min Power Frequency Withstand Voltage (phase to ground external insulation)	kV	95
			80
	Lightning Impulse Withstand Voltage (Peak Value)		185
Rated Current		A	1250	1600
Rated Short-circuit Breaking Current		kA	25	31.5
Rated Operating Sequence		O-0.3s-CO-180s-CO
Rated Short-circuit Current Breaking Times		times	20
Rated Short-circuit Closing Current (Peak Value)		kA	63	80
Rated Peak Withstand Current		kA	63	80
Rated Short-time Withstand Current		kA	25	31.5
Rated Short Circuit Duration		s	4
Mechanical Life		times	10000
Rated Operating Voltage		V	AC, DC 220V/110V
Rated Operating Current Close, Open		A	5, 2.5
Permissible Wearing Thickness of the Moving contact and Fixed Contact		mm	3
Weight		kg	About 1200

We are a professional outdoor vacuum circuit breaker manufacturer and supplier in China. We also provide low voltage circuit breaker for ship, air circuit breaker, withdrawable switchgear, and more.

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