Since 1917 · Guelph, Ontario
More than a century of North American manufacturing in electrical and electronic enclosures, rack cabinets, power distribution and transformers. Buy any of 27,000+ Hammond part numbers from A5 IT, or send us the spec and we'll quote the project.
The Hammond catalog
Every Hammond division, live on A5 IT, with stock, pricing and spec sheets on each part number.

NEMA Type 1, 3R, 4, 4X and 12 boxes in steel, stainless, aluminum and fiberglass.
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Die-cast aluminum, extruded and plastic cases for electronics and OEM designs.
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Modular C-series server cabinets and floor-standing racks up to 3,000 lb.
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Swing-out, center-hinged and fixed wall cabinets where floor space is tight.
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Shelves, panels, drawers, cable managers and mounting hardware.
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Power, control, audio and choke transformers — Hammond's original line.
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Rack-mount PDUs and heavy-duty industrial outlet strips.
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2- and 4-post open frame racks for network rooms and labs.
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Second generation — the Hammond family
A century of building
Hammond began in a backyard workshop in Guelph, Ontario in 1916, and O.S. Hammond and Son was founded there in 1917, building tube radio sets and battery chargers through the 1920s.
In the early 1930s Hammond became the first business in Canada to build a range of 2-post racks and a narrow cabinet for the booming broadcast industry, then grew through the 1950s and '60s into a major supplier of transformers, racks, cabinets and enclosures.
Today Hammond Manufacturing employs 700 people, has offices in Canada, the United States, the United Kingdom and Taiwan, and trades on the Toronto Stock Exchange as HMM.A.
Why buy from A5 IT
Enclosures, racks, PDUs and transformers alongside the switches, servers and power gear that go inside them — on one order.
Send a bill of materials or a spec and we'll quote quantities, alternates and lead times for the whole job.
Order online with clear stock and lead-time information on every part number, delivered anywhere in the United States.
A5 IT lists more than 27,000 Hammond part numbers — electrical and electronic enclosures, racks and cabinets, rack accessories, PDUs and transformers. If a part number isn't listed, request a quote and we'll source it.
Yes. Request a quote with your part numbers and quantities, or call (224) 955-1644, and our team will come back with project pricing and lead times.
Hammond builds NEMA Type 1, 3R, 4, 4X and 12 enclosures in mild steel, stainless steel, aluminum, polycarbonate and fiberglass, plus disconnect, wireway and operator-interface housings.
Hammond Manufacturing is headquartered in Guelph, Ontario, Canada, where the company was founded in 1917. It has offices in Canada, the United States, the United Kingdom and Taiwan and trades on the Toronto Stock Exchange as HMM.A.
Send us the part numbers or the drawing — we'll come back with pricing and lead times.