VT16-40.5 Integrated Vacuum Circuit Breaker
VT16-40.5 is an indoor AC high-voltage integrated vacuum circuit breaker. It is specially designed for three-phase AC power systems with a frequency of 50Hz and a rated voltage of 40.5kV (35kV class).
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VT16-40.5 Integrated Vacuum Circuit Breaker
VT16-40.5 is an indoor AC high-voltage integrated vacuum circuit breaker. It is specially designed for three-phase AC power systems with a frequency of 50Hz and a rated voltage of 40.5kV (35kV class). Its core applications are as follows:
1.Serve as the control and protection unit for electrical facilities in industrial and mining enterprises, power plants and substations.
2.Adapt to working conditions requiring frequent operation and repeated breaking of short-circuit current.
3.Available as a withdrawable truck-type unit or fixed-type unit, compatible with various types of switch cabinets.
4.Compliant with GB1984, JB3855 and relevant IEC standards, featuring high operational reliability.
Core Design Features:
1.Integrated Monolithic Design: The circuit breaker body and spring operating mechanism are highly integrated, featuring a compact structure, stable mechanical performance and reduced failure rate.
2.Vacuum Arc Extinguishing Technology: Adopts high vacuum as the arc-extinguishing medium with high insulation strength, short arcing time, low contact wear and long electrical service life.
3.High Safety: Oil-free and SF₆-free greenhouse gas design, free from explosion and fire risks, eco-friendly and maintenance-free.
4.Reliable Interlock Function: Equipped with complete mechanical interlocks to prevent misoperation and ensure operation and maintenance safety.
5.Strong Compatibility: Supports two installation modes, withdrawable truck type and fixed type, facilitating inspection, maintenance and equipment replacement.
| Parameter Item | Specification Description |
| Rated Voltage | 40.5 kV |
| Rated Frequency | 50 Hz |
| Rated Current Levels | Common ratings: 630A, 1250A, 1600A, etc. |
| Rated Short-Circuit Breaking Current | 20 kA / 25 kA / 31.5 kA (optional) |
| Rated Thermal Withstand Current | Matched with breaking current, duration 4s |
| 1min Power Frequency Withstand Voltage | 95 kV (rms, 1 min) |
| Lightning Impulse Withstand Voltage | 185 kV (peak) |
| Mechanical Endurance Life | ≥ 10,000 operations, suitable for frequent operation |
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