METALWORK MACHINERY (WUXI) CO.LTD
| Payment Terms | L/C, T/T |
| Supply Ability | 100 sets per month |
| Delivery Time | 20 days |
| Packaging Details | Plywooden package |
| Model | ZN28G-12 |
| Breaking Capacity | 20, 25, 31.5, 40, 50KA |
| Rated Voltage | 12KV |
| Rated Current | 630A, 1250A,1600A, 2000A, 2500A, 3150A,4000A |
| Mechanical Life | 10000 times |
| Motor Voltage | DC/AC 110V 220V |
| Mechanism | Spring Energy Charging |
| Warranty | 1 year |
| Brand Name | Metalwork |
| Model Number | ZN28G-12 |
| Certification | CE, ISO, CCC |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 100 sets per month |
| Delivery Time | 20 days | Packaging Details | Plywooden package |
| Model | ZN28G-12 | Breaking Capacity | 20, 25, 31.5, 40, 50KA |
| Rated Voltage | 12KV | Rated Current | 630A, 1250A,1600A, 2000A, 2500A, 3150A,4000A |
| Mechanical Life | 10000 times | Motor Voltage | DC/AC 110V 220V |
| Mechanism | Spring Energy Charging | Warranty | 1 year |
| Brand Name | Metalwork | Model Number | ZN28G-12 |
| Certification | CE, ISO, CCC | Place of Origin | China |
| High Light | Upto 4000A Vacuum Circuit Breaker ，50KA Vacuum Circuit Breaker ，high rupture ability Circuit Breaker | ||
ZN28G-12 indoor AC high-voltage vacuum circuit breaker is an indoor switching equipment with three-phase AC 50HZ and rated voltage 12KV.
Features of 12KV vacuum circuit breaker:
1. Simple structure, small size and the operating mechanism is the spring energy storage type.
2. It can be operated by AC power or DC power supply.
3. Compound insulated complted structure, small size, low noise and easy installation.
4. Ceramic and glass arc-chutes, with high vacuum insulating performance and special design, high rupture ability, long endurance and no explosive danger.
5. According to different customers' requirements, suitable for all kinds of switchgear.
Mounting Dimension:
Mounting :
Technical Parameters:
| Items | Unit | Date | |||
| Rated voltage |
KV | 12 | |||
| Rated impulse withstand voltage | 75 | ||||
| Rated short-time power frequency withstand voltage (1min) | 42 | ||||
| Rated frequency | Hz | 50 | |||
| Rated short-circuit breaking current | KA | 20 | 25 | 31.5 | 40 |
| Rated current | A | 630 1000 1250 | 630 1000 1250 1600 | 1250 1600 2000 2500 | 1600 2000 2500 3150 4000 |
| Rated short-time withstand current | KA | 20 | 25 | 31.5 | 40 |
| Rated peak tolerable current | 50 | 63 | 80 | 100 | |
| Rated short-circuit making current (peak value) | 50 | 63 | 80 | 100 | |
| Secondary circuit power frequency withstand voltage (1min) | V | 2000 | |||
| Rated operation sequence | O－0.3S－CO－180S－CO O－180S－CO－180S－CO (at 40KA) | ||||
| Rated duration of short circuit current | S | 4 | |||
| Rated single/back-to-back capacitance bank breaking current Set breaking current
| A | 630/400 | |||
| Rated short-circuit breaking current DC flow percentage | ≤35% | ||||
| Average closing speed | m/s | 0.6±0.2 | |||
| Average opening speed | m/s | 1.2±0.3 | |||
| Opening time | ms | ≤60 | |||
| Closing time | ms | ≤80 | |||
| Mechanical life | times | 10000 | |||
| Rated short-circuit breaking current breaking times | times | 30 | |||
| Allowable wear accumulate thickness of moving and static contacts | mm | 3 | |||
| Rated closing operating voltage | v | AC110/220 DC110/220 | |||
| Rated opening operating voltage | v | AC110/220 DC110/220 | |||
| Rated voltage of energy storage motor | v | AC110/220 DC110/220 | |||
| Contact opening distance | mm | 11±1 | |||
| Contact stroke | mm | 4±1 | |||
| Contact bounce time | ms | ≤2 | |||
| Three - phase opening and closing heterogeneity | ms | ≤2 | |||
| Opening contact rebound amplitude | ms | ≤3 | |||
| Main circuit resistance | Ω | ≤40 (≤25 at 40KA) | |||
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2006
Total Annual:
10,000,000-20,000,000
Employee Number:
180~200
Ecer Certification：
Verified Supplier
Metalwork Machinery (Wuxi) Co., LTd., was established in 2006, specializing in cutting and welding automation manufacture, sales, and services with more than 10 years experience. Our products ranges: CNC flame and plasma cutting machine, CNC fiber laser cutting machine, arc welding mach... Metalwork Machinery (Wuxi) Co., LTd., was established in 2006, specializing in cutting and welding automation manufacture, sales, and services with more than 10 years experience. Our products ranges: CNC flame and plasma cutting machine, CNC fiber laser cutting machine, arc welding mach...
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