Plumbing & Electrical

The Best Agricultural Machinery Switches & Relays

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Our picks are based on Amazon bestseller rankings, Amazon customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Agricultural machinery relies on robust electrical components to withstand harsh operating conditions. Selecting the right switches and relays is crucial for ensuring reliable performance, preventing downtime, and maintaining the safety of operators and equipment. These components are the unsung heroes of your farm's electrical system, directly impacting productivity and longevity.

No. 1
Polarity Relay fits Belarus...
  • Compatible with Belarus Tractor(s) 560, 562, 570, 572, 800, 802, 805, 820, 822, 825, 900, 902, 905, 922, 925, 1025, 8311, 8345, 9011, 9011L, 9021, 9045, 9311, 9345
  • Replaces Belarus OEM Number(s) 86322
  • Electrical part is not returnable
No. 2
Relay - 83982664
  • CNH Original Part
No. 3
WOODGUILIN Wireless Remote Control Switch DC12V-72V 30A Relay Remote Switch | 4900FT Long Range Wireless...
  • 【Remote Switch Waterproof】: The remote control switch 12V adopts IP65 level waterproof design, which can withstand rain, wind and sand and other bad weather. The wire faces down when installed.
  • 【Signal Stability】: This wireless remote control switch can go through walls, ceilings and doors with wireless relay switch a maximum range of 4900 feet without obstacles. (Do not install in metal box, it will not receive signal)
  • 【High Power Load】: The remote control relay switch uses 30A relay, which can load high power devices to ensure long-term stable control, high sensitivity and strong anti-interference (Note: Maximum load: 30A)
  • 【Anti interference】: 12V remote control switch using wireless RF technology, frequency 433Mhz, all-round wireless coding, anti-interference, independent control.
No. 4
Relay - 12V fits International 1502351C1 fits Case IH 5120 5130 1502351C1 | fits International 3221178R1 fits...
  • Compatible with Case IH Combine(s) 2144, 2166, 2188, 2344, 2366, 2377, 2388, 2577, 2588
  • Compatible with Case IH Tractor(s) C50, C60, C70, C80, C90, C100, CX50, CX60, CX70, CX80, CX90, CX100, MX80C, MX90C, MX100, MX100C, MX110, MX120, MX135, MX150, MX170, 485XL, 495XL, 585XL, 595XL, 685XL, 743XL, 745XL, 785XL, 795XL, 844XL, 845XL, 856XL...
  • Compatible with International Tractor(s) 433, 440, 533, 633, 733, 833, 956XL
  • Compatible with McCormick Tractor(s) CX50, CX60, CX70, CX80, CX90, CX100
No. 5
John Deere AM123716 Relay
  • Precise power control: Allows low‑voltage signals to safely switch high‑current circuits, ensuring accurate and dependable control of electrical systems
  • Improved safety: Electrically isolates control and load circuits, protecting sensitive components and reducing the risk of overloads or electrical failures
  • Durable design: Built to withstand frequent switching, vibration, and temperature variation for long‑term reliability
No. 6
Eparts, Inc. E-87578455 OEM Quality 12V Turn Signal & Hazard Relay for Case IH Skid Steers, Backhoes...
  • Replaces no(s): D147166, E20258, D104589, 309001A1, 370135A1, 72186088, 87456952, 87519871, 87519870, 92389C2, 92389C1
  • Voltage: 12 V
  • Compatible with Case IH Skid Steer(s): 85XT, 1845C, 1840 // Compatible with Case IH Loader Landscaper(s): 570NXT, 570MXT SERIES III, 570MXT, 570LXT SERIES II, 570LXT
  • Compatible with Case IH Backhoe Loader(s): 590SN, 590SM+ SERIES III, 590SM SERIES II, 590SM, 590SL SERIES II, 590SM SERIES III, 590SL, 590 TURBO, 580SN SERIES III, 580SM+ SERIES II, 580SN WT, 580SM+ SERIES III, 580SM SERIES III, 580SM SERIES II, 580SM...
No. 7
Magnetic Electric Motor Starter 380V 4KW 6.8-11AMP 5.5HP 3 Phase
  • Specification: Switch type: Button Switch; Main circuit: 380–415V 50Hz / 415–440V 60Hz; Adjustable Thermal Overload Relay: 6.8–11A; Maximum power: 4kW.
  • Fitment: The magnetic motor starter can be used with 3 phase motors. This motor starter is suitable for all air compressors, water applications and motor start control applications such as textile machinery, agricultural machinery, exhaust equipment and...
  • The magnetic motor starter is made of high-quality housing and durable contactor with on and off button for easy operation. Great powerful, built-in overload protection, intelligent protection, stable performance, and 24-hour motor protection. It also...
  • Note: Installation Manual Is NOT Included. Professional Installation Is Highly Recommended.Please ensure to order switches compatible with your motor's voltage under the guidance of a professional electrician.
No. 9
Glow Plug Control Timer Module fits International 1273121C1 fits Case IH 235 245 255 265 1273121C2 fits...
  • Compatible with Case IH Tractor(s) 235, 245, 255, 265
  • Compatible with International Tractor(s) 234, 244, 254
  • Compatible with Mitsubishi Tractor(s) MT14, MT14D, MT15, MT15D, MT16, MT16D, MT17, MT17D, MT18, MT18D, MT20, MT20D, MT21, MT21D, MT22, MT22D, MT23, MT23D, MT24, MT24D, MT25, MT25D, MT26, MT26D, MT27, MT27D, MT30, MT30D, MT33, MT33D, MT160, MT160D, MT...
  • Replaces Case IH OEM Number(s) 1273121C2

Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Agricultural Machinery Switches & Relays

Installation and Compatibility

Ensure the chosen components have compatible mounting styles and connection terminals for easy integration into existing wiring harnesses. Check that the physical size and shape will fit within the available space on your equipment. Proper installation is key to preventing electrical shorts and ensuring the longevity of the entire system.

Frequently Asked Questions

What is the difference between a switch and a relay?
A switch is a manual or automatic device used to break or complete an electrical circuit directly. A relay is an electrically operated switch that uses a small current to control a larger current, often for safety or convenience.
How do I determine the correct amperage rating?
The amperage rating of a switch or relay must be equal to or greater than the maximum current drawn by the device it controls. Overlooking this can lead to overheating and component failure.
What does an IP rating mean for these components?
An IP rating indicates the level of protection a component offers against solid objects (like dust) and liquids (like water). Higher numbers signify better protection, which is vital for outdoor or dirty environments.
Can I use a standard automotive relay in farm equipment?
While some automotive relays might work, agricultural machinery often experiences more severe conditions. It's best to choose components specifically designed for the demanding environment of farm equipment for greater reliability.
How important is the contact material?
The contact material affects the switch's or relay's ability to handle current, resist arcing, and last over time. Common materials include silver alloys, which offer good conductivity and durability for various applications.

How we compare Plumbing & Electrical

1 Specifications: we compare the key features and specifications listed by the manufacturer and on Amazon.
2 Customer ratings: we take into account the average Amazon rating and the number of reviews.
3 Price: we check the current price and highlight notable deals.
4 Updates: comparisons are refreshed regularly as prices and availability change.

Our comparisons are reviewed and updated regularly to reflect the latest products and prices.

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