Introduction:
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 |
| TD-12/1250-25B |
| ELECTRIC RATINGS |
| 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 |
≤25 |
| 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 |
| LIFE |
| 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 |
| MECHANICAL DATA |
| 1 |
Contact Force From Atmosphere |
N |
130±50 |
| 2 |
Counterforce of Contacts at Full Stroke |
N |
200±50 |
| MECHANICAL DATA OF VACUUM SWITH EQUIPPED WITH THE INTERRUPTERS |
| 1 |
Contact Stroke |
mm |
10±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 |
2400±150 |
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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