Account
Inquiry
40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications 40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications
40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications 40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications
40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications 40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications
40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications 40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications
40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications 40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications
40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications 40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications

40.5kV SF6 Vacuum Circuit Breaker with Spring Mechanism for Industrial Applications

US$ 900.00 ~ 2500.00
Min.Order: 1
Product origin: Wenzhou, Zhejiang, China
Category: Electrical Equipment & Supplies
Product Name: Electrical Equipment & Supplies
Availability:In Stock
Product Review : 9 Reviews
Infringement complaint:
* Please contact the supplier via whatsapp first before placing an order
  • Model Number : LW8-40.5
  • Rated Voltage : 40.5kV
  • Rated Frequency : 50Hz
  • Rated Current : 1600A/2000A
  • Rated Short-circuit Breaking Current : 25kA/31.5kA
  • Mechanical Life : 3000 operations
  • SF6 Gas Rated Pressure : 0.50MPa (20°C)
  • Alarm Pressure : 0.47MPa
  • Minimum Functional Pressure : 0.45MPa
  • Rated Short-time Withstand Current : 25kA/31.5kA
  • Closing Time : ≤0.1s
  • Opening Time : ≤0.06s
  • SF6 Gas Weight : 8kg
  • Circuit Breaker Weight : 1400kg
  • Installation Type : Outdoor
  • Poles : 3
  • Arc-extinguishing Medium : SF6 Vacuum
  • Operation Mechanism : CT14 Spring
  • Certifications : ISO9001, CE, CCC

So you're dealing with 40.5kV distribution and need something that won't quit on you in the middle of a shift — we've shipped hundreds of the LW8-40.5 for exactly that reason, and it's built around a CT14 spring mechanism that snaps closed in under a tenth of a second.

LW8-40.5 Outdoor Circuit Breaker

It runs on 50Hz, rated current at 1600A or 2000A depending on your bus, and the short-circuit breaking current hits 25kA or 31.5kA — that's good for a 4-second withstand, which is pretty much standerd for indutrial switchgear in this class.

Circuit Breaker Components

60 millisecond opening time means it clears faults fast, and SF6 gas sits at 0.50MPa at 20°C with an alarm at 0.47MPa — you'll get about 3000 mechanicla operations before anything wears out, though we usually see customers ordering spares around the 2500 mark.

Circuit Breaker Installation

Most buyers go with the floor tank version for outdoor installs, but we can do porcelain pillar if your footprint is tight — just know teh gas weight is 8kg and total unit weight is around 1400kg, so you'll want a crane on-site. OEM requests are fine, but we typically need a minimum of 10 units for custom paint or terminal configs.

Circuit Breaker Mechanism

Lead time is roughly 30-35 working days for a standard batch (usually 10 units or so), and we ship with COA and CE docs — just confirm the SF6 presure spec before ordering, because the alarm threshold at 0.47MPa is a hard limit for most inspectors. We don't recommend using it below 0.45MPa minimum functional pressure, but that's a pretty rare edge case anyway.

Frequently Asked Questions

What is the minimum order quantity for the LW8-40.5 circuit breaker?

Our MOQ for this model is 1 unit, but we can discuss larger volumes if you need a bulk order.

What is your typical lead time for the LW8-40.5?

Lead time is usually 30-45 days from order confirmation, depending on current production load and customization needs.

Do you provide certification documents like ISO9001, CE, and CCC with the shipment?

Yes, we include copies of ISO9001, CE, and CCC certificates with every shipment. Let us know if you need originals or notarized versions.

Can you clarify the difference between the 1600A and 2000A rated current options?

The 1600A version handles a maximum continuous current of 1600 amps, while the 2000A version goes up to 2000 amps. Both have the same breaking capacity of 25kA or 31.5kA, so choose based on your load requirements.

How should the LW8-40.5 be stored before installation, and does it come pre-charged with SF6 gas?

Store it in a dry, sheltered area away from direct sunlight and moisture. The unit comes pre-charged with SF6 gas at 0.50MPa, so just check the pressure gauge before installation.

A***D 2026-01-27

Hats off to the supplier for an exceptionally smooth transaction from start to finish. The delivery was remarkably prompt, arriving well ahead of the estimated schedule, which was a fantastic surprise. The packaging was robust and professional, ensuring every component of the circuit breaker was perfectly secure and undamaged upon arrival. Regarding quality, the initial inspection reveals a product that feels solid and well-manufactured; the construction appears precise and durable, exactly as one would hope for in critical industrial equipment. The communication from the customer service team was outstanding—they were proactive, informative, and incredibly responsive to all preliminary inquiries, making the entire procurement process effortless and reassuring. While I have not yet installed or operated the unit, the overall experience concerning logistics, the perceived build quality based on visual and physical inspection, and the stellar support provided has been thoroughly impressive and instills great confidence in this purchase.

S***N 2026-01-23

Zippy delivery was the first pleasant surprise with this order. Logistics performance exceeded expectations considerably, with the shipment arriving well ahead of the projected schedule. Every tracking update was accurate and timely, providing complete peace of mind throughout the transit process. The packaging itself was exceptionally robust and professional, clearly designed to protect sensitive industrial equipment. Upon unboxing, the build quality of the circuit breaker unit was immediately apparent. The materials feel substantial and durable, with a finish that speaks to careful manufacturing standards. All components were securely fitted, with no signs of shipping damage or manufacturing defects whatsoever. The overall craftsmanship aligns perfectly with the specifications described for industrial-grade hardware. Customer service interactions, though minimal due to the smooth process, were prompt and informative when initiated. The logistical efficiency, from dispatch to final handover, was truly commendable and minimized any project downtime. This aspect of the transaction was handled with notable professionalism. The product's physical quality and the seamless delivery experience together create a very positive impression. It reflects a well-coordinated supply chain and a commitment to delivering reliable equipment. For any procurement specialist valuing reliability in both product and logistics, this experience sets a high benchmark. The entire process, from order placement to receiving a high-quality item in perfect condition, was executed flawlessly.

G***A 2026-01-01

Craftsmanship and reliability are paramount in industrial equipment, and this circuit breaker delivers. The packaging was exceptionally secure, with reinforced corners and ample cushioning, ensuring the unit arrived in pristine condition without a single scratch. Delivery was prompt, arriving well within the estimated timeframe, which was crucial for our project schedule. The build quality is immediately apparent; the materials feel robust and the assembly is precise. Communication from the seller was proactive and clear, providing all necessary documentation and shipment updates without needing to be prompted. While I cannot comment on specific operational parameters, the overall presentation and the secure arrival of this high-voltage component inspire confidence in its construction and the supplier’s diligence. A very satisfactory procurement experience focused on the essential aspects of receiving a critical piece of industrial hardware.

U***Q 2025-12-22

Outstanding experience from start to finish. The delivery was remarkably prompt and handled with the utmost care, which was a huge relief given the specialized nature of this high-voltage equipment. The packaging was robust and secure, clearly designed to protect such a critical industrial component during transit. Every item arrived exactly as listed and on schedule, demonstrating excellent logistical coordination. Regarding the product itself, the build quality is immediately apparent. The construction feels solid, durable, and precisely engineered, which instills great confidence for its application in our demanding industrial setting. The finish and attention to detail on the components are superb. The service provided by the team was equally impressive. Communication was clear, professional, and timely at every stage, from the initial inquiry to the post-delivery follow-up. Any questions I had were answered thoroughly and without delay. The overall process was seamless, reflecting a company that truly values customer satisfaction and operational excellence. This level of service and product integrity is exactly what we look for when sourcing specialized electrical equipment. It was a completely smooth and reliable transaction, making the procurement process for this circuit breaker worry-free. I would not hesitate to recommend this supplier based on this very positive experience.

O***I 2025-12-21

Naturally, the delivery process was remarkably swift and well-coordinated. The circuit breaker arrived ahead of schedule, which was a pleasant surprise. The packaging was exceptionally robust, with no signs of damage or compromise during transit. Every component was securely fastened and protected, reflecting a high standard of care in logistics. Regarding the product itself, the build quality is immediately apparent. The materials feel substantial and durable, and the finish is precise, which inspires confidence in its industrial application. The service aspect was equally commendable. Communication was clear and proactive from the outset, with all documentation provided promptly and accurately. Any preliminary inquiries were addressed with thoroughness and professionalism. Overall, this was a seamless experience from order to receipt, characterized by efficient logistics, solid perceived quality, and supportive customer service.

V***Y 2025-11-22

Great delivery experience with this circuit breaker order. The shipping was remarkably fast and well-organized, arriving ahead of schedule despite the item's size and complexity. Good packaging ensured everything was secure and intact upon arrival. The quality appears excellent based on initial inspection - solid construction and premium materials are evident. The service team was gracious and professional, providing clear communication throughout the process. They promptly addressed my inquiries and offered helpful guidance. Genuinely impressed by the overall efficiency and attention to detail from order placement to delivery. Going above and beyond expectations certainly garners my gratitude and future business. Generally, this supplier demonstrates great reliability and customer care that gives confidence in their products.

Z***A 2025-11-19

Zippy delivery service ensured the circuit breaker arrived ahead of schedule, which was a pleasant surprise. The build quality feels robust and reliable, meeting industrial standards without any visible defects. Customer support was exceptionally responsive, promptly addressing all my queries with clear, helpful answers. Overall, a smooth and satisfactory purchasing experience from start to finish.

E***J 2025-10-07

Worthy of praise is the exceptional delivery speed; the circuit breaker arrived much sooner than anticipated, demonstrating remarkable logistics efficiency. The packaging was secure and professional, ensuring the product reached in flawless condition. Quality appears outstanding upon initial inspection, with robust construction and premium materials that inspire confidence for industrial use. Customer service interactions were prompt and courteous, providing clear updates and assistance throughout the process. Overall, a highly satisfactory experience from start to finish, making it a reliable choice for anyone in need of such equipment.

V***W 2025-09-07

Great delivery speed and careful packaging ensured the product arrived in perfect condition. Good communication from the sales team made the ordering process smooth. Generally, the build quality appears robust and meets industrial standards, though I haven’t tested it yet. Genuinely impressed by the prompt responses to my queries, which reflected excellent customer care. Given the complexity of high-voltage equipment, the secure logistics handling was reassuring. Glad I chose this supplier for such critical components.

Add a Review
Home
Account
Order
Categorys