DC Switches and Disconnect Solutions for Industrial

A properly rated DC disconnect switch provides safe circuit isolation, reliable load break switching, and personnel protection in DC systems such as photovoltaic arrays and energy storage systems. Key benefits include high short-circuit withstand capability, compact designs that reduce panel space, visible contact indication for safety verification, and compliance with UL 98B and IEC 60947-3 standards for proven performance.

The DC disconnect solutions in this category are rated from 600 VDC up to 1500 VDC, with select models like the INOSYS LBS UL 98B available for applications up to 2000 VDC. This range covers standard residential and commercial PV systems as well as utility-scale solar and large energy storage installations.

Available current ratings span from 20A for compact PV combiner box switches like the SIRCO MC PV, up to 2000A for high-capacity motorized disconnect switches like the SIRCO MOT DC and SIRCO MOT DC ESS. Mid-range options covering 100A to 1200A are also available, including the INOSYS LBS UL 98B, accommodating a wide range of industrial and renewable energy applications.

Yes. The INOSYS LBS DC UL ESS, SIRCO MOT DC ESS, and INOSYS LBS UL 98B are specifically tested and certified for Energy Storage System applications. They are designed to withstand the high short-circuit currents and demanding discharge conditions characteristic of battery-based ESS installations, meeting both UL 98B and IEC 60947-3 DC-21B utilization category requirements.

For North American installations, UL 98B certification is essential for DC and PV applications. IEC 60947-3 compliance is required for international projects. Additional certifications such as DC-21B and DC-PV2 utilization categories, CCC for Chinese markets, and RoHS/REACH compliance for environmental regulations are important indicators of product quality and suitability for demanding DC environments.

Yes. The product range includes both manually operated switches — such as the SIRCO MC PV and INOSYS LBS UL 98B with direct frontal operation — and motorized, remotely operated models including the SIRCO MOT DC and SIRCO MOT DC ESS. Remote operation is critical for large-scale solar farms and ESS installations where manual access to each disconnect point is impractical or unsafe.