
With vacuum arc interrupter products as its core industry, 777 is a scientific and technological enterprise focusing on the r&d, design, production, sales and service of 1.14-40. 5kv vacuum arc interrupter. The main products are suitable for gas-filled cabinet, solid cabinet, indoor vacuum circuit breaker, outdoor vacuum circuit breaker, load switch and other products as well as fixed sealing pole pole series products.
Providing customers with products with the innovative design.
Providing customers with products with the innovative design.


Core component of Generator Circuit Breakers and auxiliary systems, protecting critical equipment with high interrupting capacity and reliability.


Essential for MV substation and network vacuum circuit breakers, performing switching, protection, and control for grid stability.


Used for HV motor control and distribution in heavy industries like metallurgy and mining, suited for frequent operation in harsh conditions.


Applied in railway and metro traction power systems for switching and protection, designed to be vibration-resistant.


Key for grid connection and protection in wind/solar farms, handling frequent switching to enable clean energy integration.
A good supplier will assist you to quickly occupy the target market,
gain a good reputation for your brand and reputation, and thus gain more stability and better benefits.

Products have a 1-year warranty.
Support 777 brand overseas agents.
Automated assembly lines for many different products.
The company has passed the relevant quality system certification.

Customized Logo printing or laser for authorized trademarks.
Customized authorized trademark packaging.
Customized catalogue of authorized trademarks.
Available for small quantity order.
Your overseas super factory.

24-hours response.
Your overseas super factory.
Product test reports & certificates.
Product mold design and development.
Product function design and development.
Visit 777 Electrical at EP Shanghai International Electric Power ExpoWe are honored to participate i···
- LEARN MORE -Welcome to 777 Electrical Company at the Shanghai Exhibition! We are excited to showcase our latest ···
- LEARN MORE -With vacuum arc interrupter products as its core industry, 777 is a scientific and technological enterprise focusing on the r&d, design, production, sales and service of 1.14-40. 5kv vacuum arc interrupter. The main products are suitable for gas-filled cabinet, solid cabinet, indoor vacuum circuit breaker, outdoor vacuum circuit breaker, load switch and other products as well as fixed sealing pole pole series products.
Providing customers with products with the innovative design.
A good supplier will assist you to quickly occupy the target market,
gain a good reputation for your brand and reputation, and thus gain more stability and better benefits.