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Your position: Home / Electrical components / Vacuum Breaker

TD-12/1250-25I circuit breaker,vacuum interrupters for circuit breakers,EECTECH Vacuum Breaker

Vacuum Interrupters adopt“one shut technology” with ceramic envelope, which have the characteristics of high insulation level, low stop-flow, high capability of arc-extinguishing, long life, small size.
(50 available)
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1. This type of vacuum switch tube adopts one-time sealing and draining process, ceramic shell, and the contact is made of CuWC material. It has the characteristics of high insulation level, low interception value, strong arc extinguishing ability, long life, small size, simple maintenance, and no explosion hazard. , No pollution, low noise and other advantages.

2. The contactor assembled with it is used for the control and protection of the power transmission and distribution system of the electric power, machinery, chemical industry, metallurgy, mining and railway departments, especially suitable for places with frequent operations.

No. Main Technical Specification Type
1 Rated Voltage kV 12
2 Rated Current A 1250
3 Rated Frequency Hz 50/60
4 Rated Short-time(1min) Power-Frequency Withshand Voltage kV 42
5 Circuit Resistance At Contact Force From Atmosphere μΩ ≤30
6 Lightning Impulse Withstand Voltage kV 75
7 Rated Short-circuit Breaking Current kA 25
8 Rated Short-time Withstand Current,4s kA 25
9 Rated Peak Withstand Current kA 63
10 Rated Short-circuit Making Current kA 63
1 Mechanical Life Times 10,000
2 Breaking Operations of Rated Short-circuit Breaking Current Times 30
3 Storage Life years 20
4 Contacts Erosion Limit mm 3
1 Contact Force From Atmosphere N 70±40
2 Counterforce of Contacts at Full Stroke N 130±40
1 Contact Stroke mm 9±1
2 Overtrave mm 3±1
3 Average Opening Speed m/ s 1.1±0.2
4 Average closing speed m/ s 0.6±0.2
5 Contact Bouncing Duration at Cosing Operation ms ≤2
6 Rated Added External Contactfinal Force N 2000±200

Interrupter for Circuit Breaker OUTLINE:

For delivery time:
Please contact us for checking the delivery time before placing your order.

Generally, we will dispatch the items within 15 days upon order confirmation; some items may need 20~25 days to get ready for delivery, then we will try our best to dispatch as soon as possible, or we will contact you and offer advice.

For Bulk order:
If you would like to place a bulk order, please contact us for better price and better delivery cost.

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