As a pro in medium-high voltage switchgear design & manufacture, Rockwill's 145kV RVD SF6-free breaker offers stable performance, 30% maintenance savings, wide current adaptability for safe, reliable power everywhere.

The VD4 MV Vacuum Circuit Breaker is a reliable 12–24kV switching solution for medium-voltage grids. It offers 30,000 overhaul-free mechanical operations, a modular spring actuator for easy use, and sealed vacuum interrupters for stable performance in harsh environments (high humidity, dust). Compliant with IEC/ANSI standards, it suits utilities, industrial parks, and renewable energy stations, supporting distribution automation and boosting power supply reliability.

This compact switch integratesload switching, isolation, and earthingin one, using SF6 gas for superior insulation and arc extinction. Ideal for 12kV–40.5kV medium-voltage grids, it features a fully sealed design, ensuring stable operation in harsh environments (high humidity, dust, extreme temperatures). Compliant with IEC/ANSI standards, it supports distribution automation, cuts maintenance costs, and boosts power supply reliability for utilities, industrial parks, and renewable energy s

This document applies to the technical requirements for the design, testing, supply, installation, and related supporting equipment (sensors, controllers, cables, etc.) of distribution equipment on SEC in 13.8/33kV Surge Arrester and MV Overhead distribution network.

This document applies to the technical requirements for the design, testing, supply, installation, and related supporting equipment (sensors, controllers, cables, etc.) of Automatic-Recloser（ARC） on SEC in 11 to 36kV Smart Auto-Recloser .