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"Great communication, fast shipment, product in great condition as advertised! Would definitely buy from them again!"

About SIGMA Surplus

SIGMA Surplus, a division of SIGMA Group, makes it easy to buy and sell MRO spare parts. We serve all manufacturing industries with our wide selection of surplus PLCs, HMIs, VFDs, servo drives, sensors, electronic components, and much more! We carry the brands you know and trust, from Allen-Bradley to Siemens, Square D, ABB, and hundreds more.

When your production line goes down, SIGMA Surplus helps you get you back up and running quickly. We deliver reliable parts and electronics fast, offering same-day shipping on orders placed before 2 p.m. CST as well as overnight and international options, plus a door-to-door courier service.