This interface card contains four make-or-break relays and an additional interlock functionality.
It is programmable over Ethernet, floating, and isolated to 1000 V DC.


  • 4 relays with make-and-break contacts
  • Additional (floating) interlock or 24 V enable system
  • Programmable via Ethernet
  • Isolated from the output voltage, working voltage 1000 VDC
  • Floating relative to earth


  • For SM3300 and SM15K series only, multiple INT MOD CON per unit allowed
  • Installation in all slots possible 
  • Combination with all other interfaces for SM3300 or SM15K series possible
  • Easy to plug in by user on site


  • Relay contact voltage and current: 60 V / 2 A
  • Floating interlock: 5 V (open circuit)
  • Nominal input voltage: 24 VDC
  • Insulation programming connector - internal circuits: 1000 VDC
  • Operating temperature: -20 to +50 ºC


  • Safety: EN 60950 / EN 61010

Dimensions and weight

  • Width: 25 mm
  • Height: 77 mm
  • Depth: 77 mm
  • Weight: 80 gr

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Data sheets Type/Format Size
Data sheet Interfaces SM3300 series pdf 371.39 KB
Data sheet Interfaces SM15K series pdf 352.36 KB
Manuals Type/Format Size
Manual Interfaces SM3300 series pdf 634.66 KB
Manual Interfaces SM15K series pdf 1.2 MB