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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
PRICE
Manufacturer
TRE112E20
TRE112E20
In Stock
From
$49.99
Siemens
TREII-ID20
TREII-ID20
In Stock
From
$54.70
Siemens
7PU4020-2AJ20
7PU4020-2AJ20
In Stock
From
$92.24
Siemens
7PR3031-1
7PR3031-1
Limited Stock
From
Get Price
Siemens
3RP2005-2AQ30
3RP2005-2AQ30
In Stock
From
$153.53
Siemens
46PT-18A-01
46PT-18A-01
In Stock
From
$27.77
Siemens
5TT6112
5TT6112
In Stock
From
$1,086.79
Siemens
7PR1040-2AG00
7PR1040-2AG00
In Stock
From
$22.00
Siemens
7PR4040-1PQ00
7PR4040-1PQ00
In Stock
From
$16.66
Siemens
7PR4040-2PH00
7PR4040-2PH00
In Stock
From
$35.89
Siemens
7PR4040-3PH00
7PR4040-3PH00
In Stock
From
$30.52
Siemens
7PR4040-4PM00
7PR4040-4PM00
In Stock
From
$49.71
Siemens
7PR4040-4PQ00
7PR4040-4PQ00
In Stock
From
$38.42
Siemens
7PR4040-5PH00
7PR4040-5PH00
Limited Stock
From
Get Price
Siemens
7PR4040-5PM00
7PR4040-5PM00
In Stock
From
$28.72
Siemens
7PR4140-6PC00
7PR4140-6PC00
Limited Stock
From
Get Price
Siemens
7PU1140-1AJ20
7PU1140-1AJ20
In Stock
From
$45.20
Siemens
7PU1140-2AJ20
7PU1140-2AJ20
In Stock
From
$31.79
Siemens
7PU1140-2AN20
7PU1140-2AN20
In Stock
From
$28.72
Siemens
7PU1140-7AN20
7PU1140-7AN20
In Stock
From
$27.44
Siemens
7PU6040-2NJ20
7PU6040-2NJ20
In Stock
From
$26.59
Siemens
7PU7020-7CB30
7PU7020-7CB30
In Stock
From
$16.66
Siemens
7PV1424-5EG
7PV1424-5EG
Limited Stock
From
Get Price
Siemens
7PV2040-2AN23
7PV2040-2AN23
In Stock
From
$96.00
Siemens

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.