Switchgear suppliers, rating by rating

Medium-voltage switchgear handles roughly 1 to 52 kV: it takes the utility or campus feed and steps it through breakers to transformers. Low-voltage switchgear and switchboards handle the 480 V to 1,000 V side after the transformer and feed UPS, mechanical plant and racks. Most large suppliers here make both; the table’s Segment filter separates them.

Four suppliers publish 63 kA on their MV switchgear: ABB (UniGear ZS1, at up to 17.5 kV), Schneider Electric (Square D Masterclad), Powell Industries (PowlVac) and IEM (5–15 kV metal-clad, on request). The rating belongs to a named family at a named voltage, so open the supplier page and read the rating scope before comparing two 63 kA figures.

Sources: ABB, Schneider Electric, Powell, IEM

ABB, S&C Electric, Hyosung Heavy Industries, Lucy Electric and JST Power Equipment each have a verified SF6-free MV product. Four use air, dry air or synthetic air as the insulation, and S&C’s Vista Green uses a CO2 gas mixture. Each supplier page names the product and its voltage, current and kA.

Sources: ABB, S&C, Hyosung, Lucy Electric, JST

Myers Power Products, ASCO Power Technologies and Cummins publish LV assemblies up to 10,000 A. Anord Mardix lists 8,000 A main busbars on its MDX range, Norelco 6,600 A, and Vertiv, Legrand, COMECA and Rehlko 6,300 A. ASCO’s 200 kA figure is bus bracing for four cycles, not breaker interrupting capacity.

Sources: Myers, ASCO, Cummins, Anord Mardix, Norelco, Vertiv, Legrand, COMECA, Rehlko

Powell Industries disclosed a data center order above USD 400 million in its 4 May 2026 results (Form 8-K). LS ELECTRIC announced a USD 64 million switchgear contract for US data centers on 20 May 2026, with 38 kV-class delivery from December 2026. Siemens (EUR 300 million, announced 1 July 2026) and Mitsubishi Electric (about USD 86 million, October 2024) are adding switchgear plant capacity.

Sources: Powell 8-K, LS ELECTRIC, Siemens, Mitsubishi Electric

Yes. The full table is free to reuse under CC BY 4.0 with a link to switchgearsuppliers.com, as CSV or JSON. Every record carries its source URLs and verified date.