| Type: | High-voltage |
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| Structure: | Three-column Disconnector |
| Installation: | Indoor High-voltage |
| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier 
FZN21-12D/T630-20 indoor AC high voltage Load break switch FZN21-12D/T630-20 indoor high voltage vacuum Load break switch, suitable for powersupply network with rated voltage of 10kV three-phase AC 50Hz, used for breaking load current .
FZRN21-12D/T125-31.5 indoor high voltage vacuum Load break switch-fuse combination electrical appliance has large breaking capacity, safety and reliability, andlong electrical life, it can be operated frequently, the structure is compact, the volume is small, the weight is light, and the maintenance is basically unncessary. It can protect the transformer from overload and prevent the equipment from running out of phase. It has obvious isolation fracture. It can be equipped with grounding knife and electric spring mechanism with closing ability, and it can be remotely controlled.
FZN21-12 series high-voltage vacuum load switch is mainly composed of framer, disconnecting switch (current-limiting fuse of the combiner is in the disconnecting switch), vacuum switching tube, grounding switch, spring operating mechanism and so on.
This product has compact structure, small volume, long life, strong closing and breaking capacity, and easy operation and maintenance. The vacuum switch is equipped with a spring-operated mechanism, which adopts an electric motor (another manual) spring energy storage, and there are two types of closing methods: electromagnet closing and manual splitting and closing. The disconnecting switch, vacuum switch and earthing switch are interlocked with each other (mechanical interlocking) to prevent misoperation.
Environmental conditions
1. The surrounding air temperature does not exceed 40 ºC, and the average plant measured in 24h does not exceed 35 ºC, the lowest surrounding air temperature is -25ºC;
2. The effect of sunlight radiation can be ignored;
3. The altitude does not exceed 2000m;
4. No conductive dust, corrosive gases and water vapor places;
5. No fire, explosion hazardous places;.
6. Places without frequent and violent vibration.
| No. | Item | Unit | Data | |
| 1 | Rated voltage | kV | 12 | |
| 2 | Rated frequency | Hz | 50 | |
| 3 | Rated current | A | 630 | |
| 4 | Rated active load breaking curent | A | 630 | |
| 5 | Rated closed loop breaking current | A | 630 | |
| 6 | 5% rated active load breaking current | A | 21.5 | |
| 7 | Rated cable charging breaking current | A | 10 | |
| 8 | Rated no-load transformer breaking capacity | KVA | 1250 | |
| 9 | 1min power frequency withstand voltage: Vacuum fracture, alternate phase, relative ground/isolated fracture |
kV | 42/48 | |
| 10 | Lightning impulse withstand voltage: Vacuum fracture, alternate phase, relative ground/isolated fracture |
kV | 75/85 | |
| 11 | 4s rated short-time withstand current (thermal stability) | kA | 20 | |
| 12 | Rated peak withstand current (dynamic stability) | kA | 50 | |
| 13 | Rated short-circuit making current | kA | 50 | |
| 14 | Institutional life | Vacum Load break switch | times | 10000 |
| Isolation knife, ground knife | times | 2000 | ||
| 15 | Contact allowable wear cumulative thickness | mm | 2 | |
| 16 | Opening and closing operating torque | mm | >200 | |
| 17 | Electric operation power supply | V | AC/DC 110/220 | |
Drawing
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FAQ
Q: Could I have prices of your products?
A: Welcome. Please feel free to send us inquiry here. We will reply you within 24 hours.
Q: Can I get a sample before the bulk order?
A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable.
Q: Can we print our logo/ company name on products?
A: Yes, of course, we accept OEM, then need you to provide brand authorization to us
Q:Do you accept product customization?
A:Yes, of course, please provide specific drawings or parameters, we will quote you after evaluation
Q: What is the lead time?
A: The lead time depends on the quantities ordered, generally within 7-20 days after receiving the payment.
Q: What is your Trade Terms?
A: We accept EXW, FOB, CIF, FCA, etc.
Q: What is your payment method?
A: We accept T/T, Western Union, Paypal, irrevocable L/C at sight, etc
Q: Do you inspect the finished products?
A: Yes, each step of production and finished products will be came out inspection by QC department before shipping. And we will provide goods inspection reports for your reference before shipment
Q: How to solve the quality problems after sales?
A: Take photos of the quality problems and send to us for our checking and confirming, we will make a satisfied solution for you within 3 days.
Suppliers with verified business licenses
Audited Supplier 
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