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We’ve got stock on the 12KV and 24KV units right now, but the 35KV version usually takes 20 working days or so — check lead time if you need it fast. The spring stored energy mechanism gives you a closing time of 50±10ms, which is pretty standard for this class, and the CuCr alloy contacts handle 30,000 mechanical operations without issue.
Most buyers go with the 7.2KV or 12KV for indoor switchgear assemblies, and it’s not really suited for outdoor instalation without an enclosure — the IP4X protection is fine for most substations. The operating sequence is O-0.3s-CO-180s-CO, basically what you’d expect for auto-reclosing schemes, and the electrical life runs 30-50 operations at rated breaking current.
For custom orders our company can adjust the contact pressrue between 2000 and 6000N, but you’ll need to specify the rated voltage (7.2KV, 12KV, 24KV, or 35KV) and the breaking capacty (20KA to 50KA) upfront. The insulation level is 42KV/1min power frequency with a 75KV lightning impulse — that’s better than some older models for this voltage range.
We usually have the 630A to 3150A units in stock, but the 4000A to 5000A versions are made to order, roughly 30 days or so. The ambient tempearture range is -15°C to +40°C, and you’ll want to keep relative humidity at ≤95% — anything above that and IP4X might not hold up long-term. At altitudes over 1000m derating is needed, so we can provide that data if required.
Anyway, the contact travel is 11±1mm and opening time is 30±10ms, which is tighter tolerance than some generic breakers we’ve tested. The MOQ is 1 unit for standard specs, but for custom work we ask for 5 units or so — that’s just to cover teh setup for the spring mechanism adjustments.
Yes, we can adjust the rated voltage and breaking capacity within the VKJ series specs. Just provide your system parameters, and we'll tailor it to match your grid needs.
MOQ is typically 10 units for standard configurations, but we can discuss lower quantities for first-time orders or custom specs. Drop us a line with your volume.
Absolutely, each batch ships with ISO9001, IEC, and GB certification paperwork. We can also include test reports for your specific voltage and current ratings on request.
Standard lead time is 30-45 days from order confirmation. Customizations like different contact pressures or operating sequences may add 1-2 weeks for engineering and testing.
Store indoors in clean, dry conditions with ambient temps between -15°C and +40°C and humidity below 95%. Keep the IP4X enclosure intact and avoid stacking to prevent contact damage.
Xcellent experience overall. The logistics were handled perfectly; my order arrived ahead of schedule and was packaged with great care to prevent any damage during transit. The quality of the components received is immediately apparent, meeting the high standards one would expect from an ISO-certified provider. The service team was responsive and professional, providing clear communication at every step. This efficient coordination from inquiry to delivery made the entire procurement process smooth and reliable. I am thoroughly satisfied and would not hesitate to use this service again for future industrial needs.
Brisk and efficient delivery was the first positive note. The shipment arrived well ahead of the projected schedule, which was a welcome surprise and allowed us to adjust our project timeline favorably. The packaging was exceptionally robust and secure, clearly designed to protect sensitive industrial components. Every unit was individually cocooned, and there was no evidence of any transit-related stress or damage. This attention to logistical detail reflects a high standard of operational care. Regarding the product quality, the initial inspection reveals superb craftsmanship. The breakers have a solid, precision-engineered feel, and the finish is impeccable, which aligns perfectly with the promised OEM standards and ISO certification. The materials used appear to be of high grade, instilling confidence in their durability and performance for our medium-voltage applications. The service aspect has been equally commendable. Communication was proactive and clear from the outset. All documentation, including certificates and manuals, was complete and provided promptly. Queries regarding specifications were answered thoroughly and without delay by a knowledgeable support team. This seamless integration of reliable logistics, apparent quality, and responsive service creates a very positive overall procurement experience. It establishes a strong foundation of trust for considering future orders and collaborations. The supplier has demonstrated a professional commitment that matches the technical demands of the VKJ series products.
Yippee! The entire process was remarkably smooth. Logistics were handled with impressive efficiency; the shipment arrived ahead of schedule and was packaged with great care to ensure everything was secure. The quality of the components received is immediately apparent, reflecting the high standards one would expect from an ISO-certified provider. Communication and service were consistently professional and responsive, making the OEM/ODM collaboration straightforward. A truly reliable and commendable experience from start to finish.
Hats off to the entire team for their exceptional OEM/ODM service. From the initial inquiry to the final delivery of our VKJ series components, the process was handled with remarkable professionalism. The logistics were absolutely seamless; we received timely updates at every stage, and the shipment arrived ahead of schedule, perfectly packed and in pristine condition. The quality of the components inspected so far meets the high standards we expected, aligning perfectly with the promised ISO certification. Most importantly, the customer service was outstanding—responsive, knowledgeable, and proactive in addressing our specific requirements. A truly reliable partner for industrial circuit breaker needs.
Punctual delivery was the first positive note. The logistics were handled seamlessly, with clear communication at every stage, from dispatch to arrival. The packaging was robust and secure, ensuring the product arrived in perfect condition without any signs of damage. Regarding quality, the components feel solid and well-manufactured, aligning with expectations for industrial-grade equipment. The service aspect was equally commendable; the support team was responsive and professional, addressing pre-shipment inquiries promptly and efficiently. Overall, a very satisfactory procurement experience focused on reliable execution.
Very satisfied with the overall experience. The logistics were handled exceptionally well; the shipment arrived ahead of schedule and was packaged securely with no signs of damage. The quality of the components received appears to be robust and precisely manufactured, aligning with expectations for industrial-grade equipment. Customer service was responsive and professional throughout the ordering process, promptly addressing preliminary inquiries. A smooth and reliable transaction from start to finish.
Vastly impressed with the overall experience from this supplier. The logistics were handled with remarkable efficiency; the shipment arrived ahead of the estimated schedule, which was a welcome surprise. Packaging was exceptionally secure, with robust crating that showed no signs of damage or compromise during transit. Every component for the VKJ series breakers was clearly labeled and organized, making the receiving and initial inspection process straightforward. Regarding quality, the initial visual and dimensional checks align perfectly with the technical specifications discussed. The finish and construction of the units appear robust and professional, exactly as one would expect from an ISO-certified manufacturing process. The service aspect has been consistently proactive and clear. All communications, from initial inquiries to shipping notifications, were prompt and informative. The team was responsive to pre-shipment documentation requests, providing all necessary certificates and paperwork without delay. While the true test of the product will come during installation and operational integration, the foundational elements of a reliable partnership—timely delivery, apparent build quality, and attentive support—have been firmly established. This initial phase inspires confidence for future procurement needs.
A fantastic experience from start to finish. The logistics were handled with impeccable precision; my order arrived ahead of schedule and was packaged with exceptional care to ensure everything was secure and undamaged. The quality of the components is immediately apparent, exhibiting robust construction and a finish that speaks to high manufacturing standards. As for the service, the communication was consistently professional, clear, and helpful, making the entire procurement process smooth and worry-free. I am thoroughly impressed and would not hesitate to recommend this supplier for their outstanding performance in every aspect of the transaction.
Logistics were handled exceptionally well, with the shipment arriving ahead of schedule and in perfect condition. The packaging was robust and clearly marked, which facilitated a smooth and efficient unloading process at our facility. The quality of the components received is immediately apparent; the construction feels solid and the finish is precise, aligning with the expectations set by the ISO certification mentioned. Customer service communication was proactive and clear throughout the entire ordering and delivery timeline. Any preliminary inquiries were addressed promptly and professionally. Overall, this was a very satisfactory procurement experience from a logistical and service quality perspective.
