SFM Indoor SF6 Circuit Breaker
1.The interrupter unit consists of an SF6 arc-extinguishing chamber, contact system, and other auxiliary devices.
2.The SF6 circuit breaker uses SF6 gas as an arc-extinguishing and insulating medium to achieve excellent breaking and short-circuit current interruption performance. 3.The contact system is used to establish and break the circuit.
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
1.SFM Indoor SF6 Circuit Breaker: Your Reliable Medium-Voltage Solution
In today’s demanding power distribution systems, ensuring reliable circuit protection is non-negotiable. The SFM Indoor SF6 Circuit Breaker stands out as a robust solution designed for medium-voltage applications up to 40.5kV. Combining advanced SF6 gas technology with precision engineering, this circuit breaker delivers exceptional arc-extinguishing performance, operational longevity, and compliance with global standards. Whether you’re managing industrial plants, urban grids, or renewable energy projects, the product offers unmatched safety and efficiency.


2.Technical Specifications
- Rated Voltage: 40.5kV
- Interrupter Unit: SF6 arc-extinguishing chamber with a precision contact system
- Insulation Medium: SF6 gas for enhanced arc quenching and insulation
- Design: Compact, modular, and easy to integrate into existing switchgear
- Standards Compliance: IEC 62271, IEEE C37.04, and region-specific certifications
3.Key Features & Benefits
1. Superior Arc Extinguishing
SF6 gas ensures rapid, reliable interruption of high currents, eliminating risks of re-ignition even under extreme conditions.
2. Long Service Life
Engineered for durability, the circuit breaker withstands frequent operations with minimal wear, reducing lifecycle costs.
3. Modular Design
A streamlined operating mechanism simplifies maintenance and part replacement, cutting downtime by up to 40%.
4. Eco-Friendly Options
Explore hybrid gas variants to align with SF6 phase-out regulations in Europe.
4.Where It Shines: Application Scenarios
Be used in a wide range of industries.

Industrial Plants
Eliminate power factor penalties in CNC machines and assembly lines while handling surge currents up to 100x rated capacity.

Substation
Stabilizes substation voltage against harmonics and intermittent generation from renewable inverters.

Commercial Buildings
Retrofit aging systems in hospitals or malls with silent (<45dB), flame-retardant capacitors that meet NFPA 70 fire codes.
5.How It Works?
The SFM Indoor SF6 Circuit Breaker operates in three stages:
1. Circuit Closure: Contacts connect under SF6 insulation, enabling smooth current flow.
2. Fault Detection: Sensors trigger rapid SF6 gas release to quench arcs during overloads.
3. Interruption: The gas’s dielectric strength isolates faults within milliseconds, restoring system safety.
6.Built to Last: Manufacturing & Quality
Every product undergoes:
- ISO-Certified Processes: From raw materials to final assembly (ISO 9001, 14001, 45001).
- Rigorous Testing: Third-party validated for gas leakage, seismic resilience, and arc-flash safety.
- Patented Innovations: Developed through collaborations with global research institutes.
7.Why Choose Us?
- Certifications: 3C, CE, UL, and tailored compliance for your region.
- Custom Solutions: Adjust voltage ratings, monitoring features, or form factors to fit your project.
- 24/7 Support: Global technical assistance and spare parts availability.
- Proven Expertise: Trusted by utilities and industries across 30+ countries.



8.FAQs
1. What certifications does the product hold?
It meets IEC standards.
2. Can it handle frequent operations?
Yes—its SF6 gas system ensures minimal wear over 20+ years.
3 What’s the lead time for bulk orders?
Typically 8–12 weeks, with expedited options.
4. Do you provide installation support?
Yes—our team offers remote guidance and onsite services.
9.Contact Us
Upgrade your power systems with the SFM Indoor SF6 Circuit Breaker—where innovation meets reliability. For quotes or technical queries, contact us at xaxd_electric@163.com. Let’s power your success!
10.Factory Show


11.Equipment Display

12.Application Cases
State Grid systems, power engineering, steel and metallurgy, petrochemicals, rail transportation, energy and water conservancy, construction, environmental protection, and renewable energy sectors
13.Team and Exhibition

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