Solid State Relay

The Solid State Relay is a 4-pin electronic switching component that functions as a normally open or normally closed relay without the challenges of external packaging encountered with a stand-alone relay. The Solid State Relay can be integrated in a VIVISUN® High Capacity or Compact switch body or can be included in a stand-alone NEXSYS® LOGIC Module for use behind the panel.

  • Configurable inside of VIVISUN® High Capacity or Compact switch bodies and NEXSYS® LOGIC Modules.
  • Normally open and normally closed versions available
  • Source AC or DC current up to 0.75 A normally open and 0.25 A normally closed
  • Use logic level input voltage to switch 28 VDC aircraft power
  • Electrical isolation correcting sneak paths
  • Signal polarity reversal (high to low or low to high)
  • 3 voltage input options available: 18 to 32 VDC, 8 to 18 VDC, and 4 to 6 VDC
  • Output switching up to 32 VDC or 28 VAC rms
Solid State Relay Block Diagram

How it Works

Each of the relays can provide output switching up to 32 VDC or 28 VAC rms. Input pins and switch pins are optically isolated, with no electrical connection that could cause a sneak path.

Component Features

The Solid State Relay (SSR) is a NEXSYS LOGIC component designed to replace a typical relay and may be integrated into a VIVISUN switch body or NEXSYS LOGIC Module to minimize design complexity and installation labor. The SSR is available in 6 configurations:

  • SSR1H: Normally open relay that closes when a voltage of 18 to 32 VDC is applied across the input.
  • SSR1M: Normally open relay that closes when a voltage of 8 to 18 VDC is applied across the input.
  • SSR1L: Normally open relay that closes when a voltage of 4 to 6 VDC is applied across the input.
  • SSR2H: Normally closed relay that opens when a voltage of 18 to 32 VDC is applied across the input.
  • SSR2M: Normally closed relay that opens when a voltage of 8 to 18 VDC is applied across the input.
  • SSR2L: Normally closed relay that opens when a voltage of 4 to 6 VDC is applied across the input.

Solid State Relay – Application Examples

To help system designers understand the potential of LOGIC Component Technology, we have assembled a collection of Application Notes. The links below show example applications that utilize the Solid State Relay component.

Dropout Relay FunctionTriple State Warning IndicatorBlink Advisory Indicator