1. Home / 
  2. All Categories / 
  3. Automation / 
  4. Automation Relays

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.
SORT BY
Part Number
PRICE
Manufacturer
H3BA-8H-DC24
H3BA-8H-DC24
In Stock
From
$53.51
Omron
H3BA-FA-AC100/110/120
H3BA-FA-AC100/110/120
In Stock
From
$51.84
Omron
H3BA-N220V
H3BA-N220V
In Stock
From
$34.52
Omron
H3BF-8-DC24-0.5S-100H
H3BF-8-DC24-0.5S-100H
In Stock
From
$65.29
Omron
H3BH-8-AC-200-220-240
H3BH-8-AC-200-220-240
In Stock
From
$101.20
Omron
H3BH-8-AC100/110/120-10M
H3BH-8-AC100/110/120-10M
In Stock
From
$107.54
Omron
H3BH-8-AC250-200/220/240-M
H3BH-8-AC250-200/220/240-M
In Stock
From
$44.59
Omron
H3BH-8-AC250-200/220/240-S
H3BH-8-AC250-200/220/240-S
In Stock
From
$46.70
Omron
H3BH-8/AC24-M
H3BH-8/AC24-M
In Stock
From
$53.91
Omron
H3BH-8/DC24-S
H3BH-8/DC24-S
In Stock
From
$69.59
Omron
H3CR-A-300 AC100-240/DC100-125
H3CR-A-300 AC100-240/DC100-125
In Stock
From
$206.44
Omron
H3D-C-DC24AC/200/220/240
H3D-C-DC24AC/200/220/240
Limited Stock
From
Get Price
Omron
H3DE-G-AC/DC24-230
H3DE-G-AC/DC24-230
Limited Stock
From
Get Price
Omron
H3DK-HDL AC200-240V
H3DK-HDL AC200-240V
Limited Stock
From
Get Price
Omron
H3DK-M1 AC/DC24-240
H3DK-M1 AC/DC24-240
In Stock
From
$115.14
Omron
H3DR-M-AC110-120-10S
H3DR-M-AC110-120-10S
In Stock
From
$25.39
Omron
H3DR-M-AC110-120-60S
H3DR-M-AC110-120-60S
In Stock
From
$72.75
Omron
H3DS-GL
H3DS-GL
Limited Stock
From
Get Price
Omron
H3DT-N1  AC/DC24-240
H3DT-N1 AC/DC24-240
Limited Stock
From
Get Price
Omron
H3M-AC100/110/120-A
H3M-AC100/110/120-A
Limited Stock
From
Get Price
Omron
H3M-DC24-B
H3M-DC24-B
In Stock
From
$82.89
Omron
H3M-US-AC120-B
H3M-US-AC120-B
In Stock
From
$36.34
Omron
H3M-US-AC120-C
H3M-US-AC120-C
In Stock
From
$43.04
Omron
H3Y-2 AC100-120 10S
H3Y-2 AC100-120 10S
In Stock
From
$124.12
Omron

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.