1109990

Overview

The SICK, Inc. model 1109990 is a safety relay belonging to the UE10-4XT series. It features a coil voltage of 24V AC/DC and supports a maximum switching voltage of 230V AC or 300V DC. The unit utilizes a contact configuration of 7PST-4NO/3NC (4 Form A, 3 Form B) with a rated contact current of 6A. Designed for DIN rail mounting, it employs screw terminals for connection and has a mechanical operating time of 70 ms.

Feature Summary

• Provides machine safety functions through integrated safety relay logic
• Features a versatile contact arrangement combining normally open and normally closed outputs
• Supports dual power supply compatibility for flexible system integration

Applications

• Industrial machinery safety circuits
• DIN rail mounted control panels
• Safety interlocking systems

Procurement Notes

Verify the specific ordering suffix against the official datasheet to ensure correct coil voltage and contact configuration. Confirm that the component matches the required safety integrity level for your application. Check for any recent product change notices or obsolescence announcements from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component based on the requirement for a 24V AC/DC coil voltage and the specific need for a 7PST contact structure. Ensure the installation environment supports DIN rail mounting and that the 6A current rating meets the load requirements. Verify compatibility with existing safety logic controllers in the system architecture.

Part Context

This part belongs to the UE10-4XT series of safety relays manufactured by SICK, Inc. The series is designed for protecting personnel and equipment in industrial environments. These units typically replace complex discrete safety circuitry with a single compact module, simplifying wiring and reducing panel space requirements.

Replacement Considerations

The discontinued model 6024919 is listed as an obsolete predecessor. The confirmed substitute part number is 1099971.