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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
7PU4020-2BN20
7PU4020-2BN20
In Stock
From
$129.49
Siemens
7PU4020-3AB30
7PU4020-3AB30
In Stock
From
$212.40
Siemens
7PU4020-3AJ20
7PU4020-3AJ20
In Stock
From
$172.20
Siemens
7PU4020-4AJ20
7PU4020-4AJ20
Limited Stock
From
Get Price
Siemens
7PU4020-5AB30
7PU4020-5AB30
In Stock
From
$236.27
Siemens
7PU4040-1AN20
7PU4040-1AN20
Limited Stock
From
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Siemens
7PU4040-3AN20
7PU4040-3AN20
In Stock
From
$43.64
Siemens
7PU4120-2BN20
7PU4120-2BN20
Limited Stock
From
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Siemens
7PU4140-2QN20
7PU4140-2QN20
Limited Stock
From
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Siemens
7PU4220-2BF30
7PU4220-2BF30
In Stock
From
$65.41
Siemens
7PU4220-2BJ20
7PU4220-2BJ20
In Stock
From
$34.05
Siemens
7PU4220-2BN20
7PU4220-2BN20
In Stock
From
$108.99
Siemens
7PU4320-2AN20
7PU4320-2AN20
In Stock
From
$35.31
Siemens
7PU4320-2BJ20
7PU4320-2BJ20
Limited Stock
From
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Siemens
7PU4440-2BB30
7PU4440-2BB30
In Stock
From
$31.72
Siemens
7PU4440-4AJ30
7PU4440-4AJ30
In Stock
From
$113.10
Siemens
7PU4440-8RB30
7PU4440-8RB30
In Stock
From
$50.00
Siemens
7PU4620-0BN20
7PU4620-0BN20
Limited Stock
From
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Siemens
7PU4620-2BN20
7PU4620-2BN20
In Stock
From
$83.07
Siemens
7PU5120-6CN20
7PU5120-6CN20
In Stock
From
$85.52
Siemens
7PU5220-4AN20
7PU5220-4AN20
In Stock
From
$61.50
Siemens
7PU5720-0AB30
7PU5720-0AB30
In Stock
From
$105.44
Siemens
7PU5720-0AN20
7PU5720-0AN20
In Stock
From
$32.87
Siemens
7PU6-220-7NN20
7PU6-220-7NN20
In Stock
From
$177.57
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.