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Automation Relays

For automation systems in industrial and commercial facilities, automation relays are among the most critical components for reliable control logic and system protection. Automation relays provide switching, timing, monitoring, and control functions that enable precise automation sequences and protect equipment from operational faults. Electrical.com carries an extensive selection of automation relays from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of manufacturing automation, process control systems, building management systems, and industrial machinery applications.
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Part Number
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ARB-208-ABA
ARB-208-ABA
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Marsh Bellofram
ARB-240-ACA
ARB-240-ACA
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Marsh Bellofram
SP0330
SP0330
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Marsh Bellofram
TBB-120-AAA
TBB-120-AAA
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Marsh Bellofram
TBC-240-ACA
TBC-240-ACA
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Marsh Bellofram
TDB-24-AKB-030
TDB-24-AKB-030
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Marsh Bellofram
TDD-120-AKB-300
TDD-120-AKB-300
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Marsh Bellofram
TDH-120-AKB-30M
TDH-120-AKB-30M
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Marsh Bellofram
TDT-24-AKA-010
TDT-24-AKA-010
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ATC Diversified
TDT-24-AKA-060
TDT-24-AKA-060
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Marsh Bellofram
TDT-240-AKA-030
TDT-240-AKA-030
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Marsh Bellofram
TDU-120-AKB
TDU-120-AKB
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Marsh Bellofram
TUC-120-AKA-30M
TUC-120-AKA-30M
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Marsh Bellofram
TUD-120-AKA-30M
TUD-120-AKA-30M
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Marsh Bellofram
339A-359-Q-2-X
339A-359-Q-2-X
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Marsh Bellofram
ASC-5023
ASC-5023
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Marsh Bellofram
TDC-120-AKB-060
TDC-120-AKB-060
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Marsh Bellofram
TDD-120-AKA-12H
TDD-120-AKA-12H
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Marsh Bellofram
TDM-120-ALA-060
TDM-120-ALA-060
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Marsh Bellofram
0514A
0514A
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Marsh Bellofram
328D-200-F-10-XX
328D-200-F-10-XX
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Marsh Bellofram
313A001N1X
313A001N1X
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Marsh Bellofram
339B-200-E-2-X
339B-200-E-2-X
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Marsh Bellofram
TDD-120-AFB-001
TDD-120-AFB-001
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Marsh Bellofram

Electrical.com stocks the largest inventory of automation relays in the world, with over 1 million square feet of new, used, surplus, and re-certified relay components available for immediate shipment. From control relays to interface modules, we have what you need when others say no. Our comprehensive automation relay inventory spans all voltage ratings, contact configurations, and control specifications from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our automation relays serve critical applications across industrial automation systems, manufacturing control panels, process control equipment, PLC interface circuits, machine control systems, packaging equipment, material handling automation, building automation systems, and HVAC control installations.


Whether you're maintaining legacy equipment with obsolete relay models or sourcing current production components for new automation projects, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need automation relays now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.