RDK pole‑mounted three‑phase electronic sectionalizer adopts CT energy‑harvesting without external auxiliary supply, distinguishes temporary / permanent faults by counting upstream trips, with visible open gap, manual closing by insulated stick and maintenance‑free. It meets relevant IEC/ANSI sectionalizer standards with configurable pickup‑current & counting‑times.

RDK pole‑mounted electronic sectionaliser needs no external auxiliary supply, counts upstream recloser‑tripping times for fault isolation with visible open gap after tripping, manual closing via insulated stick and maintenance‑free. It complies with relevant IEC/ANSI sectionaliser standards with configurable counting parameters.

ROCKWILL VD4-CS indoor fixed vacuum circuit breaker complies with IEC & EN high-voltage switchgear standards. It features fixed embedded poles, maintenance-free design, integrated monitoring, full mechanical interlocks and compact layout with low TCO.

ROCKWILL VD4‑36 indoor fixed vacuum circuit breaker complies with IEC 62271‑100 and EN power‑equipment standards. Adopting spring mechanism and sealed‑pole technology, it features few components, maintenance‑free service, compact fixed‑type design and low total‑cost‑of‑ownership.

ROCKWILL RHB outdoor SF₆ circuit breaker complies with IEC & ANSI standards. Adopting compact structure, high‑grade insulation and intelligent secondary monitoring, it features low SF₆ leakage rate (<0.5%/year), 30‑year maintenance cycle and supports customized manufacture for substation outdoor installation.