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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
CT1S45
CT1S45
In Stock
From
$104.32
Littelfuse
RCD300M2-240V
RCD300M2-240V
Limited Stock
From
Get Price
Littelfuse
TDU3000A
TDU3000A
In Stock
From
$58.14
Littelfuse
TDUH3001A
TDUH3001A
In Stock
From
$35.35
Littelfuse
ERDM4130S
ERDM4130S
In Stock
From
$89.67
Littelfuse
KRDB421
KRDB421
In Stock
From
$146.29
Littelfuse
KRDM121
KRDM121
In Stock
From
$77.77
Littelfuse
PHS230A20
PHS230A20
In Stock
From
$131.90
Littelfuse
TAC1411
TAC1411
In Stock
From
$19.57
Littelfuse
TDMB411
TDMB411
In Stock
From
$38.16
Littelfuse
TDUIL3001A
TDUIL3001A
In Stock
From
$154.87
Littelfuse
TRM120A2Y240
TRM120A2Y240
In Stock
From
$38.09
Littelfuse
TS6321P
TS6321P
In Stock
From
$69.82
Littelfuse
TSD2411S
TSD2411S
In Stock
From
$109.30
Littelfuse
HRDB117S
HRDB117S
Limited Stock
From
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Littelfuse
KRDR421A4
KRDR421A4
Limited Stock
From
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Littelfuse
TDM12DL
TDM12DL
Limited Stock
From
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Littelfuse
TRDU120A3
TRDU120A3
Limited Stock
From
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Littelfuse
TDB12D
TDB12D
Limited Stock
From
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Littelfuse
CT-45S45
CT-45S45
Limited Stock
From
Get Price
Littelfuse

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.