SICK ReLy Series Safety Relay

Highly compact safety relay compliant with PL e, SIL 3 standards. Fast response times with shorter safety distances. Safe series connection compatible variants.

This model has 10 variants.
Effective August 29th, 2025 SICK has added a 9.8% surcharge for all of their products. The surcharge will appear as a separate line item on each sales order.
Part Number
  • ReLy Series
Highlights...

Features

  • Safety level: PL e, SIL 3
  • Compatible sensor types:
    • Safety sensors with potential-free outputs
    • Two-hand controls Type III C, in accordance with
    • EN ISO 13851
    • Flexi Loop safe series connection
    • Safety sensors with OSSDs
    • Safety sensors with test input
    • Safety pressure mats (depending on type)
  • Enabling current paths:
    • 2, 3, 4, 2+1
  • Sensor monitoring:
    • Discrepancy monitoring
    • Cross-circuit detection
    • Sequence monitoring
  • Response time(s): 10, 12, 79ms
  • Configuration method: Hard wired, DIP switch
  • Housing width(s): 18, 28mm
  • Status LEDs and diagnostic interfaces
  • Variants for universal application and for safe series connection with Flexi Loop available

The SICK ReLy Series Safety Relay provides an easy-to-use solution with reduced space-use in the control cabinet. This relay series ensures quicker production starts, shorter safety distances and reduced downtime, at level e safety standards. Installation and wiring is streamlined through a single front connector, with fast module exchanges via the one-click mounting rail release. This generation's housing is a 20% reduction in width compared to its predecessor.