Products
12kV Indoor Withdrawable Vacuum Circuit Breaker
Model:VS1-12 withdrawable
Choose TaiLi Electric VS1-12 withdrawable vacuum circuit breaker for reliable 12kV indoor protection. TaiLi Electric VS1-12 features solid insulated poles and a compact 550mm design, ideal for KYN28 switchgear and frequent operation applications.
Taili Electric VS1-12 withdrawable vacuum circuit breaker (hereinafter referred to as “this circuit breaker”) is a three‑phase AC 50Hz indoor high‑voltage switching device rated at 12kV.
Taili Electric VS1-12 integrates the operating mechanism and the breaker body into a single unit. This circuit breaker can be fixed‑mounted or combined with a dedicated propulsion mechanism to form a withdrawable truck unit, specifically designed for 550mm‑wide switchgear cabinets.Taili Electric VS1-12 complies with GB/T 1984‑2014, JB/T 3855‑2008, and IEC 62271‑100, making it suitable for industrial plants, power plants, substations, and frequent‑operation scenarios.
Table of Technical Parameters：
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Item |
Unit |
Technical Specification |
|||
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Rated voltage |
Kv |
12 |
|||
|
Rated insulation level |
Peak value of rated lightning impulse withstand voltage |
75 |
|||
|
1 min power-frequency withstand voltage |
42 |
||||
|
Rated short-circuit breaking current |
kA |
20 |
25 |
31.5 |
|
|
Rated current |
A |
630、1250 |
|||
|
Rated short-time withstand current(r.m.s.) |
kA |
20 |
25 |
31.5 |
|
|
Rated peak withstand current |
50 |
63 |
80 |
||
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Rated short-circuit making current |
50 |
63 |
80 |
||
|
Rated operating sequence |
|
O-0.3s-CO-180s-CO |
|||
|
Rated short-time withstand duration |
s |
4 |
|||
|
Mechanical endurance |
operations |
20000 |
|||
Outline Dimension Diagram (550mm wide middle cabinet)
|
Rated current |
A |
630 |
1250 |
|
Rated short-circuit breaking current |
kA |
20，25，31.5 |
25，31.5 |
|
Matched static contact dimensions |
mm |
∅35 |
∅49 |
|
Phase-to-phase distance |
mm |
150±1.5 |
|
Workshop
FAQ
Q1: What is the relationship between VS1‑12 and ZN63?
A: VS1‑12 and ZN63 refer to the same product – VS1 is the design code, while ZN63 is the national standard model number. TaiLi Electric VS1‑12 meets all national standard requirements and is fully interchangeable with ZN63‑type breakers.
Q2: What is the difference between the 550mm cabinet version and the standard 800mm version?
A: The 550mm version is a compact design with a phase spacing of 150mm. TaiLi Electric VS1‑12 is specifically optimised for 550mm cabinets, significantly saving floor space while maintaining full insulation performance.
Q3: Why can't the circuit breaker close?
A: Common causes include: the truck not being fully in position, closing lockout solenoid failure, insufficient stored energy, auxiliary switch contact issues, or loose plug pins. It is recommended to check these items in order.
Q4: Does the vacuum degree of the interrupter degrade over time? How to detect?
A: Vacuum degree may slowly decrease over long‑term use. The solid‑insulated pole design of TaiLi Electric VS1‑12 effectively slows this process. If abnormal noise during opening/closing or failure in withstand voltage tests occurs, the vacuum level should be checked promptly.
Hot Tags: 12kV Indoor Withdrawable Vacuum Circuit Breaker, China, Manufacturer, Supplier, Factory
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Contact Info
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Address
No.81, Jingsan Road, Economic Development Zone, Yueqing City, Zhejiang Province, China
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