Catalogue · ROCKWILL

Indoor fixed lateral type vacuum circuit break 12...24 kV, 630...1250A, 12...25 kA

Indoor medium voltage switchgear cabinets, industrial plant power distribution, mining power supply, renewable energy booster stations, municipal substation, commercial complex power receiving system. It is used for switching load current and breaking sho

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Updated2026.09

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Document description

ROCKWILL Indoor fixed lateral type vacuum circuit breaker is medium voltage indoor switching device for three-phase AC 50Hz power system, covering rated voltage 12kV to 24kV, rated continuous current 630A ~ 1250A, rated short-circuit breaking current 12kA ~ 25kA. It adopts fixed lateral installation structure with vacuum interrupter for arc extinction, compact layout and easy maintenance. The product complies with IEC 62271-1:2017 and IEC 62271-100:2020. Relevant documents include Type Test Certificate No. TT-2025-04156, Witness Test Report No. WT-2025-09089, Routine Factory Test Report No. FT-2025 series, Raw Material Mill Certificates, all issued by CNAS accredited independent high voltage test laboratory and available for tender submission, utility review and project site acceptance. It is equipped with reliable mechanical interlock, optional auxiliary contacts and intelligent monitoring sensors for temperature and state monitoring, suitable for indoor dry environment and can be treated for tropical high humidity conditions.

Frequently asked questions

What are the rated parameters of Indoor fixed lateral type vacuum circuit breaker?

This indoor fixed lateral vacuum circuit breaker covers rated voltage 12kV to 24kV, rated continuous current from 630A to 1250A, rated short-circuit breaking current from 12kA to 25kA for selection according to project requirements.

What is the structural characteristic of fixed lateral type vacuum circuit breaker?

It adopts fixed lateral mounting structure. The vacuum interrupter is arranged laterally, featuring compact dimension, simple mechanical structure and high operation stability, installed inside indoor metal enclosed switchgear.

What medium is used for arc quenching of this circuit breaker?

Vacuum interrupter is used as arc extinguishing medium. No SF6 gas, low maintenance requirement, safe and environmentally friendly for indoor power distribution.

What safety interlock features are available for this vacuum circuit breaker?

Mechanical interlock is provided to prevent mis-operation such as closing under earthing condition. Auxiliary switches are available for status feedback of opening and closing position.

What optional monitoring functions can be supplied for this vacuum circuit breaker?

Temperature sensors and auxiliary status monitoring modules are optional, which can collect operating state and temperature data and connect to substation SCADA system for remote monitoring.

Rockwill

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500-1000 2008 China

Rockwill Electric Group Global Manufacturer of High voltage and medium-voltage power equipment and smart grid solutions. Headquartered in Wenzhou, China. Serving 100+ countries with quality, innovation, and trust. What We Offer: • HV-MV switchgear (VCB, SF₆ circuit breakers, RMU, GIS) • Distribution transformers and substations • Smart grid and monitoring systems • Solar, wind, EV charging, and energy storage solutions • EPC turnkey power projects Certified: ISO 9001 / ISO 14001 / ISO 45001

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