It can be fixed in a switch cabinet or installed on a handcart.
Stable performance and easy installation.
Vacuum Indoor Circuit Breaker Product Scope
Medium voltage circuit breakers for primary distribution up to 24 kV, 3150 A (4000*), 50 kA.
Circuit Breaker Key Benefits
1.Simple structure.
2.Adapt ultra low resistance type vacuum interrupter.
3.Adapt optimization and modular spring operating mechanism.
4.Suitable for occasions with frequent operation.
5.Free maintenance and long service life.
6.High reliable performance.
vcb panel indoor vacuum circuit breaker panels 11kV vcb panel
Environmental Conditions
Ambient temperature: - 40°C~+40°C (below 35°C within 24 hours)
Relative humidity: ≤95% (daily average) or ≤90% (monthly average)
Altitude: ≤ 1000m
The operating mechanism is the trip-free stored energy type with independent opening and closing regardless of the operator's action. The operating mechanism is widely used in all VD4-R series circuit-breakers with frontal control.
The circuit-breaker can be remote controlled when fitted with dedicated electrical accessories (gearmotor, opening and closing release).
The operating mechanism, the three poles and the current sensors (if provided) are installed on a metal frame without wheels. The construction is particularly compact, sturdy and of limited weight.
VD4-R series circuit-breakers with lateral operating mechanisms are life-long sealed pressure devices.(Standards IEC 62271-100)
Vacuum circuit-breaker | **4/R 12 | **4/R 17 | **4/R 24 | |||||||
Standards | * | * | * | |||||||
Rated voltage | Ur(kV) | 12 | 17.5 | 24 | ||||||
Rated insulation voltage | Us(kV) | 12 | 17.5 | 24 | ||||||
Withstand voltage at 50Hz | Ud(kV) | 28 | 38 | 50 | ||||||
Impulse withstand voltage | Up(kV) | 75 | 95 | 125 | ||||||
Rated frequency | fr(Hz) | 50-60 | 50-60 | 50-60 | ||||||
Rated thermal current | Ir(A) | 630 | 800 | 1250 | 630 | 800 | 1250 | 630 | 800 | 1250 |
Rated duty breaking capacity (symmetrical rated short-circuit current) |
Isc(kA) | 12.5 | / | / | 12.5 | / | / | 12.5 | / | / |
16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | ||
20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | ||
25 | 25 | 25 | 25 | 25 | 25 | / | / | / | ||
Short-time withstand current(3s) | Ik(kA) | 12.5 | / | / | 12.5 | / | / | 12.5 | / | / |
16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | ||
20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | ||
25 | 25 | 25 | 25 | 25 | 25 | / | / | / | ||
Making capacity | Ip(kA) | 31.5 | / | / | 31.5 | / | / | 31.5 | / | / |
40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | ||
50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | ||
63 | 63 | 63 | 63 | 63 | 63 | |||||
Making capacity | * | * | * | |||||||
Opening time | ms | 40...60 | 40...60 | 40...60 | ||||||
Arcing time | ms | 10...15 | 10...15 | 10...15 | ||||||
Total break-time | ms | 50...75 | 50...75 | 50...75 | ||||||
Closing time | ms | 30...60 | 30...60 | 30...60 | ||||||
Code | Available versions | |||||||||
Closing pushbutton | **4circuit-breakers with lateral operating mechanism are available in the following versions: |
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Open/closed indicator | ||||||||||
Discharged | Center-distance P=()mm | Fixed | Removable | |||||||
Operation counter | 210 | 210 | ||||||||
Manually charging handle | 230 | 230 | ||||||||
Opening pushbutton | 250 | 250 | ||||||||
Protection relay | 275 | 275 | ||||||||
Delivery terminal box | 300 | 300 | ||||||||
Current transformer | 310 | 310 | ||||||||
Polo |