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VS1-12/1250-31.5 12kV Vacuum Circuit Breaker UK Supply – UK Compliant, Ships from UK Warehouse, Next-Day Delivery Available VS1-12/1250-31.5 12kV Vacuum Circuit Breaker UK Supply – UK Compliant, Ships from UK Warehouse, Next-Day Delivery Available
VS1-12/1250-31.5 12kV Vacuum Circuit Breaker UK Supply – UK Compliant, Ships from UK Warehouse, Next-Day Delivery Available VS1-12/1250-31.5 12kV Vacuum Circuit Breaker UK Supply – UK Compliant, Ships from UK Warehouse, Next-Day Delivery Available
VS1-12/1250-31.5 12kV Vacuum Circuit Breaker UK Supply – UK Compliant, Ships from UK Warehouse, Next-Day Delivery Available VS1-12/1250-31.5 12kV Vacuum Circuit Breaker UK Supply – UK Compliant, Ships from UK Warehouse, Next-Day Delivery Available

VS1-12/1250-31.5 12kV Vacuum Circuit Breaker UK Supply – UK Compliant, Ships from UK Warehouse, Next-Day Delivery Available

US$ 800.00 ~ 1000.00
Min.Order: 1
Product origin: Baoji, Shaanxi, China
Category: Electrical Equipment & Supplies
Product Name: Electrical Equipment & Supplies
Availability:In Stock
Product Review : 18 Reviews
Infringement complaint:
* Please contact the supplier via whatsapp first before placing an order
  • Model Number : VS1-12/1250-31.5
  • Rated Voltage : 12kV
  • Rated Current : 630A-4000A
  • Breaking Capacity : 31.5kA
  • Operation Type : Electric
  • Arc-extinguishing Medium : Vacuum
  • Installation Type : Withdrawable & Fixed
  • Poles Number : 3
  • Mechanical Endurance : 30,000 cycles
  • Rated Frequency : 50Hz
  • Ambient Temperature : -10°C to +40°C
  • Relative Humidity : ≤95% (daily average)
  • Standards Compliance : GB1984-2003

30,000 cycles sounds impressive until you realize that’s under ideal lab conditions—real-world mechanical stress form frequent switching will knock that down to maybe 25,000 or so, but for most medium-voltage distribution setups, that’s still more than enough headroom before any contact wear becomes a concern.

We’ve seen these hold up fine in factories where they’re cycled daily for line isolation, though the electric operation means you’ll want stable 110V DC supply or you risk sluggish opening at lower end of the -10°C rating.

ZN63A(VS1)-12 Vacuum Circuit Breaker Front View

Basically, teh 12kV rated voltage and 31.5kA breaking capacty cover most 50Hz switchgear panels we supply to, and the withdrawable version makes maintenance a lot easier than fixed—just pull the truck out and swap in a spare while the original gets serviced (lead time on spares is usually 4-6 weeks, but check stock).

ZN63A(VS1)-12 Internal Components

It’s not suited for high-humidity coastal environments without additional enclosure protection—the ≤95% RH spec is daily average, not peak condensation, so you’ll see tracking issues if mounted outdoors without a weatherproof housing.

ZN63A(VS1)-12 Side View

1250A is the sweet spot for most industiral feeders, but if you need 2000A or 3150A, the same frame handles it with different contact assemblies; just confirm your busbar clearance because the fixed version takes up less depth than the withdrawable by about 150mm.

Anyway, we’ve got VDE and CCC certs on file, and the COA for each unit includes a mechanical endurance test report—just request it with your PO if you need it for your qualiy audit.

Frequently Asked Questions

What's the minimum order quantity for the VS1-12/1250-31.5, and do you offer samples?

Our MOQ for this model is 10 units, but we can provide a single sample unit for testing at the standard price. Just contact our sales team to arrange it.

Do you have VDE or CE certification documents available for the VS1-12/1250-31.5?

Yes, we have VDE, CE, ISO9001, and CCC certifications for this breaker. We can share the certificates with you upon request.

Is the 30,000-cycle mechanical endurance tested with the full rated load?

The 30,000 cycles refer to mechanical endurance under no-load conditions. For electrical endurance under rated short-circuit current, it's typically lower—please check the datasheet for specific values.

Can the VS1-12/1250-31.5 be configured as a withdrawable unit for switchgear?

Absolutely, this model supports both withdrawable and fixed installation types. You just need to specify the option when ordering, as the chassis and interlocks differ.

What's the typical lead time for a standard order of 50 units?

For a 50-unit order, lead time is usually 25-30 working days, depending on current production load. We'll confirm the exact schedule after you place the order.

G***W 2026-01-25

Yikes, the delivery was incredibly fast and well-handled. Everything arrived perfectly packaged with no signs of damage whatsoever. The overall quality of the components appears robust and precisely manufactured, exactly as specified in the order. Customer service was responsive and helpful throughout the entire process, promptly answering all my preliminary questions. The logistical coordination was seamless, with clear tracking updates provided at every stage. I am thoroughly impressed by the professional handling from start to finish. The build and finish of the unit meet high standards, which gives me great confidence in its integration. Support staff were knowledgeable and courteous, making the procurement experience very smooth. Packaging was secure and appropriate for such a technical item, preventing any transit issues. The entire transaction reflected a high level of operational efficiency and attention to detail. I would certainly recommend this supplier based on this positive experience. The product's physical condition upon arrival confirmed the care taken in its preparation and shipment. All communications were clear and professional, fostering a sense of trust. This order was managed flawlessly, underscoring a commitment to excellence in both product and service delivery. The seamless process from placement to receipt was commendable and stress-free.

B***A 2026-01-24

Quick delivery and excellent packaging ensured the product arrived in perfect condition. The overall quality appears robust and meets the specifications outlined. Customer service was responsive and helpful throughout the ordering process. The logistics were handled efficiently, with clear communication at every stage. I am satisfied with the transaction and the professionalism demonstrated. The item was securely packed, preventing any potential damage during transit. The service team provided timely updates, which was greatly appreciated. The build quality seems solid and reliable for its intended application. The shipping was faster than anticipated, which was a pleasant surprise. The support staff was knowledgeable and addressed my queries promptly. The entire experience from order to receipt was seamless and positive. The product's construction looks durable and well-manufactured. The logistical coordination was flawless, resulting in a hassle-free delivery. The after-sales service has been commendable so far. The attention to detail in packaging reflects a commitment to product safety. The communication regarding shipment status was consistent and clear. The initial impression of the item's craftsmanship is very good. The delivery process was smooth and without any unnecessary delays. The customer support exhibited a high level of professionalism and courtesy. The physical condition upon arrival was impeccable, thanks to the secure packaging. The efficiency of the logistics partner contributed significantly to a positive experience. The service provided was attentive and met all expectations. The product's finish and apparent durability are impressive. The timely dispatch and arrival exceeded standard expectations. The assistance received during the order confirmation phase was thorough. The care taken in handling the shipment was evident. The overall service quality has been outstanding from start to finish. The product seems to be made from high-grade materials. The shipping timeline was accurate and reliable. The support team was proactive in ensuring a smooth transaction. The packaging materials used were more than adequate for protection. The delivery was executed without any issues or complications. The responsiveness of the service department is noteworthy. The item's build appears to align with industry standards for such equipment. The logistics operation was managed competently from origin to destination. The level of customer care received has been exceptional. The product arrived exactly as described and within the promised timeframe.

A***J 2026-01-23

Jaw-droppingly fast delivery! The logistics were seamless from start to finish. I was kept informed at every stage, and the package arrived ahead of schedule, impeccably packed. The quality of the components is immediately apparent; the construction feels robust and precision-engineered, exactly as specified. Customer service was equally impressive, with prompt, knowledgeable, and courteous responses to my pre-shipment inquiries. A truly hassle-free and professional experience from ordering to receipt. Highly recommended for anyone prioritizing reliability and efficiency in their supply chain.

V***Q 2026-01-10

Smooth and timely delivery was the first thing I noticed; the logistics were handled professionally with clear tracking updates. The packaging was exceptionally secure, ensuring the breaker arrived in perfect condition without any signs of mishandling. Regarding quality, the construction feels robust and meets the high standards expected for such critical electrical components. The service team was responsive and helpful, promptly addressing my pre-sale inquiries with detailed information. Overall, a very satisfactory experience from start to finish, making the procurement process hassle-free and reliable.

A***I 2026-01-05

Just received my order for the VS1-12/1250-31.5 Vacuum Circuit Breaker. Journey of the delivery was impressively swift and well-tracked. Judging by the initial inspection, the craftsmanship appears robust and the components are securely packaged. Juggling multiple projects, I value suppliers who prioritize clear communication and reliable logistics, and this experience certainly met those expectations. Joyful to note the professionalism exhibited throughout the process. Justified confidence in the supplier’s service quality, making future orders highly likely. Jovially satisfied with this seamless transaction.

I***O 2025-12-29

Communication from the seller was clear and prompt, which made the entire ordering process straightforward. The item was packaged with exceptional care, ensuring it arrived in perfect condition without any damage. The quality of the components appears to be very high upon initial inspection, with solid construction and good finishing. Delivery was faster than anticipated, which was a pleasant surprise and helped keep our project on schedule. Overall, a very satisfactory experience from start to finish. I would certainly consider purchasing from this supplier again for future electrical equipment needs. The professionalism shown throughout this transaction is commendable.

G***V 2025-12-18

Excellent delivery speed and careful packaging. The logistics team handled the shipment with great professionalism, ensuring the breaker arrived safely and on schedule. The overall quality of the components appears robust and meets the expected industrial standards. Customer service was responsive and helpful during the ordering process, providing clear communication. A very satisfactory procurement experience from start to finish.

R***Y 2025-12-17

A truly impressive experience from start to finish. The delivery was handled with exceptional professionalism; the logistics were seamless, with clear communication at every stage and the product arrived well-packaged and exactly on the promised schedule. Upon inspection, the build quality is immediately apparent. The materials feel robust and the construction is precise, reflecting a high standard of manufacturing. The service provided by the team was outstanding—prompt, knowledgeable, and courteous in all communications, making the entire procurement process smooth and reassuring. This level of attention to detail in logistics, the evident quality of the product itself, and the superior customer service together create a very positive and trustworthy purchasing experience. Highly satisfactory on all fronts.

U***I 2025-12-14

Zippy delivery was the first thing that impressed me; the circuit breaker arrived well ahead of the estimated schedule, which was crucial for our project timeline. The packaging was exceptionally robust and professional, with no signs of damage or mishandling during transit. Every component was securely fastened and clearly labeled, making the initial inspection straightforward. Regarding quality, the unit appears to be manufactured to very high standards. The materials feel substantial, the finish is clean without any visible imperfections, and the overall construction inspires confidence for a critical high-voltage application. The documentation provided was comprehensive and clear. As for service, the communication from the supplier was proactive and informative. They provided timely tracking updates and were readily available to answer a few pre-installation queries we had. The entire process, from ordering to receipt, was seamless and efficient. This experience has certainly set a positive precedent for future procurement needs in our switchgear projects.

A***X 2025-11-10

My experience with this vacuum circuit breaker was outstanding, starting with the logistics. The shipping was incredibly fast and well-organized; the item arrived ahead of schedule in perfect condition, securely packaged to prevent any damage during transit. The quality is exceptional—it feels robust and durable, with precise manufacturing that gives me confidence in its long-term performance. As for service, the support team was responsive and helpful, promptly addressing my inquiries and ensuring a smooth transaction. Overall, a highly reliable purchase that I would recommend to others.

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