Harmony solid state relays (SSRs)

Slim interfaces, Modular DIN rail and Panel mount solid state relays

The Harmony SSR series offers slim interface (SSL), modular DIN rail (SSD, SSM) and panel mount (SSP) solid state relays that provide complete, compact, and innovative solutions for a wide variety of applications with interfacing control and load switching.


  • Compliant with international standards and certifications: IEC, UL, CSA, EAC, RoHS, and REACH
  • Complete solution – 1 and 3-Phase, slim, modular DIN rail and panel mount offer
  • Telescopic screw terminal to facilitate the use of lug terminals
  • Smart diagnostic module with alarm output for easy troubleshooting in SSP1
  • Flexible wiring options – Screw or Spring connectors in SSL; Relay and Contactor configurations in SSD

Benefits of Harmony SSRs vs Electromechanical Relays (EMRs)

  • Fast and precision control: high switching frequency
  • Reliable and silent switching: no moving parts, soundless switching
  • Robust in harsh environments: Resistance to shock & vibration – Free from contact contaminations
  • Maintenance free: Fully electronics, unlimited lifespan


  • Packaging machines
  • Heating control
  • Injection molding
  • HVAC
  • Textile machines
  • Medical equipment