T: +86-180-67981129
E:sales@pino-electric.com
E:sales@pino-electric.com
Makou Industrial Park, Yongxiu County, Jiujiang city, Jiangxi Province, China
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For 11kV/12kV three-phase indoor distribution systems, the Pino Electric VS1 vacuum circuit breaker delivers precise fault protection for utility grids, industrial facilities and substations. Engineered with advanced vacuum interrupter technology, it handles frequent operational cycles and repeated short-circuit interruptions while minimizing maintenance requirements. Fully compliant with IEC 62271 standards, this medium voltage VCB safeguards critical infrastructure including cables, transformers, motors and capacitor banks. Custom configurations are available for rated voltages from 6kV to 12kV and rated currents from 630A to 4000A.
≤50ms opening time cuts fault duration, reducing thermal and electromagnetic damage to connected equipment and minimizing downtime. The breaker interrupts fault currents before they can propagate through the system.
20,000-cycle mechanical and electrical lifespan, with only 3mm allowable contact wear accumulative thickness. Rated for 50 short-circuit breaking cycles (30 cycles for 40kA models), reducing replacement frequency and total ownership cost.
Premium insulation materials withstand 42kV power frequency voltage (1min) and 75kV lightning impulse voltage, preventing electrical faults even under transient overvoltage conditions.
Available in handcart and fixed designs compatible with 650mm, 800mm and 1000mm cabinet widths, fitting seamlessly into existing switchgear setups without extensive modifications.
Add integrated smart control units for remote operation, real-time status monitoring and fault diagnosis, enhancing grid operational intelligence and reducing on-site maintenance visits.
The spring-operated mechanism consumes only 70W during energy storage, with a maximum energy storage time of ≤10s, lowering overall system power consumption and supporting sustainability goals.
NO. | Project | Unit | Numerical value | ||||
1 | Rated voltage | kV | 12 | ||||
2 | Rated short-time power frequency withstand voltage(1min) | 42 | |||||
3 | Rated lightning shock tolerance voltage (peak) | 75 | |||||
4 | Rated frequency | Hz | 50 | ||||
5 | Rated current | A | 630 | 630 1250 1600 | 1250 1600 2000 | ||
6 | Rated short-circuit breaking current | kA | 20/25 | 31.5 | 40 | ||
7 | Rated short-time withstand current | 20/25 | 31.5 | 40 | |||
8 | Rated short circuit duration | S | 4 | ||||
9 | Rated peak tolerable current | kA | 50/63 | 80 | 100 | ||
10 | Rated short-circuit closing current | 50/63 | 80 | 100 | |||
11 | Secondary circuit power frequency withstand voltage (1min) | V | 2000 | ||||
12 | Rated single/back-to-back capacitor group breaking current | A | 630/400(800/400 for 40kA) | ||||
13 | Rated capacitor bank turn-on inrush current | kA | 12.5(Frequency not more than 100Hz) | ||||
14 | Switching time (rated voltage) | ms | ≤50 | ||||
15 | Closing time(rated voltage) | ≤60 | |||||
16 | Mechanical life | Time | 20000 | ||||
17 | Breaking times of rated current (electrical life) | 20000 | |||||
18 | Number of breaks of rated short circuit current | 50(40kA≤30) | |||||
19 | Kinematic and static contacts allow wear accumulative thickness | mm | 3 | ||||
20 | Rated closing operating voltage | V | AC110/220 DC110/220 | ||||
21 | Rated switching operating voltage | ||||||
22 | Rated voltage of energy storage motor | ||||||
23 | Rated power of energy storage motor | W | 70 | ||||
24 | Energy storage time | S | ≤10 | ||||
25 | Contact opening distance | mm | 11±1 | ||||
26 | Overstroke | 3.5±0.5 | |||||
27 | Contact closing bounce time | Ms | ≤2(40kA≤3) | ||||
28 | Three -phase switching and closing are different | ≤2 | |||||
29 | Average opening speed | m/s | 1.1±0.2 | ||||
30 | Average closing speed | 0.6±0.2 | |||||
31 | Main circuit resistance (fixed/hand) | μΩ | ≤45/60(630A)≤40/55(1250A) | ||||
32 | Contact closing contact pressure | N | 2000±200(20kA)2400±200(25kA) | ||||
33 | Rated operation sequence | Opening -0.3s(18OS)-Opening and closing | |||||
The VS1 medium voltage VCB is designed for indoor use in applications requiring reliable overcurrent and short-circuit protection:
Utility distribution grids and indoor substations
Industrial and mining power distribution systems
Power generation facilities and renewable energy plants
Motor control centers and transformer protection
Capacitor bank switching and overhead line protection
Facilities requiring frequent operational cycles
Ambient temperature: -25°C to +40°C
Daily mean relative humidity: ≤95%; monthly mean: ≤90%
Altitude: ≤1000m above sea level
Earthquake intensity: ≤8 degrees
Free from dripping water, flammable/explosive hazards, corrosive gases and violent vibration
Custom engineered solutions are available for:
Altitudes above 1000m
High-humidity environments with condensation risk
Applications requiring enhanced vibration resistance
The VS1 has a rated mechanical life of 20,000 operations, with 20,000 rated current breaking cycles and 50 rated short-circuit breaking cycles (30 cycles for 40kA models).
Yes, it fully complies with IEC 62271 standards for medium voltage switchgear and controlgear.
Yes, we offer fully customized configurations with rated currents from 630A to 4000A and short-circuit breaking currents from 20kA to 40kA.
Handcart models are available for 650mm, 800mm and 1000mm cabinets, while fixed models fit 800mm and 1000mm cabinets.
For detailed dimensional drawings, complete datasheets or custom solution design tailored to your 11kV distribution system, contact our technical team today. We provide fast response and professional application support for projects worldwide.
