SIGMA Surplus

We Buy

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

Sell Now

We Sell

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

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We Source

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

Source It For Me

We Repair

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

Fix Your 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.