By:GlobalOEMsBuyer Context
On a typical shift at a warehouse distribution board or food processing line, a 40.5kV feeder breaker sits behind a molded-case cover, waiting for overcurrent or overvoltage events. Procurement teams for these facilities usually check three things before adding a new SKU: does it mount fixed in the existing MCC room? Will it survive repeated trips without mechanical wear? And can the supplier keep up with quarterly replenishment? The Lw8-40.5kv High Voltage AC Sf6 Sulfur Hexafluoride Vacuum Circuit Breaker listed under Circuit Protection and Circuit Breakers answers those with fixed installation, SF6 arc-extinguishing medium, and a weekly production capacity of 10,000 pieces.
For importers and distributors, price entry sits at US$1,885.00 to 2,850.00, which leaves room for landed cost and after-sale margin on high-voltage protection components.
Product Description
This is a normal type circuit breaker, not a high-speed switch. The model number LW8-40.5 places it at the 40.5kV level, and the structure is MCCB with one pole. SF6 is the arc-extinguishing medium, meaning the interrupting chamber uses sulfur hexafluoride gas to cool and quench the arc when contacts separate. Fixed installation means no draw-out carriage; the unit bolts into the panel. That keeps mechanical complexity low and suits facilities that do not need hot-swap maintenance.
The listed functions go beyond basic switching: conventional circuit breaker, circuit-breaker failure protection, overcurrent protection, and OVP (overvoltage protection). Buyers who stock a single unit for both feeder and protection roles can consolidate inventory.
Specs & Configuration
Here are the manufacturer-listed attributes with the buyer-side take for evaluation:
- Model NO. LW8-40.5:standard 40.5kV designation, easier to cross-reference with existing panel drawings.
- Arc-extinguishing Medium: SF6:high dielectric strength reduces arc duration; confirm SF6 handling and refill procedures locally.
- Installation: Fixed:no withdrawable mechanism to maintain; lower mechanical failure points on fixed feeders.
- Structure: MCCB / Poles Number: 1:molded-case construction for single-phase high-voltage circuits; verify pole count against site requirements before ordering.
- Function: Overcurrent, OVP, Circuit-Breaker Failure Protection:combines overload, overvoltage, and breaker-failure trip logic in one device.
- Certification: ISO9001-2000, CCC:quality system and China compulsory certification simplify import documentation.
- Transport Package: Wooden Carton Packaging / Wooden Packagings:export-grade crating reduces transit damage claims.
- Trademark: OEM:distributors can ship under their own brand without tooling changes.
- Production Capacity: 10,000 PCS/Week:repeat orders are not capacity-constrained for most stocking programs.
- HS Code: 8536200000:correct tariff heading for circuit breakers, speeds customs clearance.
Price band US$1,885.00 - 2,850.00 depends on order configuration; request a quote for exact OEM branding and packaging options.
Application Scenarios
Where does a fixed 40.5kV SF6 breaker fit in daily operations? For teams managing distribution boards in warehouses, the single-pole MCCB can sit on an incoming high-voltage feeder and trip on overcurrent before conveyor or refrigeration load startups create damage. On food processing lines, overvoltage protection helps isolate supply issues before they reach sensitive motor controls. Construction site temporary substations benefit from the wooden carton packaging, which survives rough handling between job sites, and fixed installation speeds up reconnection.
Because this model is listed under Electronic Components / Circuit Protection / Circuit Breakers, procurement managers evaluating a high-voltage line item can treat it as a component-level purchase rather than a full switchgear assembly.
Company Profile
Yueqing Tianze Elec. Co., Ltd. lists its product range as Distribution, Boards, Fuse. Origin is Wenzhou. The OEM trademark option gives buyers a way to keep their own catalog identity. Weekly production capacity of 10,000 pieces suggests the factory is set up for volume, though exact lead times and MOQ should be confirmed directly before issuing a PO.
Next Steps
Contact Yueqing Tianze Elec. Co., Ltd. through the platform to confirm current pricing, available OEM labeling, and wooden carton export packaging. Ask for the ISO9001-2000 and CCC certificates, and request a sample test report for SF6 breaker performance if your local authority requires it. No product page links are provided here; the related product link at the bottom of this article will route you to the listing.
Sourcing Notes
All specifications in this article come from the supplier's product listing. Buyers should verify voltage ratings, pole count, and protection settings against their local electrical code. The price range and production capacity are as stated by the seller and may change with configuration, order volume, or raw material costs.
View product details: Lw8-40.5kv High Voltage AC Sf6 Sulfur Hexafluoride Vacuum Circuit Breaker
