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1 Channel Relay Breakout – 5V


1 Channel Relay Breakout – 5V


SKU: BOB-119 - Mfg Part Number: BOB-119


Need to drive high current or high voltage devices with a low voltage or low current signal? This large single 20A relay breakout board can handle it! This version of the board uses a 5V relay and can be triggered with 3.3V or 5V logic signals – ideal for the Arduino, Raspberry Pi, and other microcontrollers / microcomputers.

The board features 2 oz. copper for improved high current performance and uses high quality North American sourced parts. Simply connect 5V power, Ground, and your digital I/O to the 3 pin header and that’s it – no need for any additional components!

The relay has the Input, Normally Open, and Normally Closed contact broken out to a nice 5mm pitch screw terminal and each trace is separated by isolation routing. An indicator LEDs shows the status of the relay coil, when lit the coil is active. The Normally Open (NO) circuit is rated to a maximum of 20A for short periods of time. For continuous operation we recommend keeping this to 13.5A to stay within the limitations of the terminal block. The Normally Closed (NC) circuit is rated to a maximum of 10A due to the design of the relay.

The breakout board is sized to fit directly in a 1591 Small Enclosure. Perfect for making a clean, enclosed control box. Enclosure sold separately.

Please Note: While this board is capable of switching higher voltages, please exercise caution. If you are inexperienced or unsure about how to use this product safely we recommend looking at the IoT Power Relay, which has all of its high voltage circuitry fully enclosed.


  • Current(Max): 20A(NO), 10A(NC)
  • Current(Recommended): 13.5A(NO), 10A(NC)
  • 3.3 / 5V Logic Level Compatible
  • Dimensions: 62.1 x 42.1 x 23mm
  • Contact Configuration: Form C
  • Coil Voltage: 5V
  • Contact Voltage(Max): 220VAC
  • LEDs to indicate activated relays
  • 4 mounting holes


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In stock (can be backordered)

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