Buy Relay Switch Apr 2026

Schneider Electric SimpliFi 20A 1.5HP Industrial Power Solution Grainger Industrial Supply& more Go to product viewer dialog for this item.

These are modules designed to interface with microcontrollers like Arduino or Raspberry Pi for low-voltage logic switching. Arduino Shield 4 Relays arduino.cc& more Go to product viewer dialog for this item.

An industrial solution for motor loads up to 1.5hp. Available for $41.30 at Grainger . buy relay switch

A stackable shield for Arduino that adds four independently controlled 2A relays. Available for $28.40 at DigiKey or $32.65 at RobotShop . 1 Channel Relay Module 5V DC Goliath Automation & Robotics& more Go to product viewer dialog for this item.

Commonly used for car horns, fog lights, and fuel pumps, these are built for DC electrical systems and often include mounting tabs or waterproof housings. Viair 40-Amp Relay Summit Racing& more Go to product viewer dialog for this item. Schneider Electric SimpliFi 20A 1

A dual-channel relay for controlling two circuits or motors like roller shutters. Often sold as a 2-pack for $70.50 $56.40 at Shelly USA . Automotive & 12V Relays

Industrial Solid State Relay 60A–400A — High-Power AC Output | DC Control 3-32V, 300A Go to product viewer dialog for this item. An industrial solution for motor loads up to 1

Relay switches are categorized by their application, ranging from smart home automation to heavy-duty industrial or automotive use. When choosing a relay, ensure the matches your control signal (e.g., 5V for Arduino, 12V for cars) and the contact rating can handle the power of the device you are switching. Smart Home Relays