Our Services

Sell Yours

Sell us your spare inventory! Let us know what parts you have, and we will make you an offer.

Buy Ours

We offer one of the largest inventories of industrial automation and MRO parts, so you can easily find what you need. 

Source Parts

Should you require a part we don't have in stock, we’ll tap into our global supplier network to source it for you.

Test & Repair

Our certified technicians offer comprehensive repair services and test capabilities for your industrial parts.

2,304,655 parts to 65,046 customers in 167 countries

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.

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Explore Our Top Parts

Most Popular Brands

We add stock to our inventory daily

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DISCLAIMER: SIGMA Surplus and SIGMA Group are not affiliated with nor an authorized distributor or representative of any manufacturer, brand or product listed. All items sold by SIGMA Surplus are covered under SIGMA Surplus' warranty and not the manufacturer warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners.

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