Description 

The Allen-Bradley MSR138DP safety relay is designed to monitor safety devices and ensure reliable system shutdowns in emergency conditions. Operating at 24V AC/DC, it supports multiple reset methods and provides high-integrity protection in compliance with international safety standards.

Technical Specifications 

Information About MSR138DP

The MSR138DP is part of the Allen-Bradley Guardmaster Minotaur series and carries catalog number 440R-MS138DP. It features two safety contacts and one auxiliary contact, with selectable automatic, manual, or monitored reset options. Engineered for use in safety circuits rated up to Category 4 (ISO 13849-1), Performance Level "e", and SIL 3 (IEC 61508), the relay ensures compliance in applications with high safety requirements. The compact housing includes screw terminal connections and a standard mounting profile, with dimensions of 114.5 mm (L) × 99 mm (W) × 45 mm (D).

Key Features:

• 24V AC/DC Supply Voltage: Supports dual-voltage operation for flexible installation in diverse control systems.

• Dual Safety Contacts: Provides two normally open safety outputs for direct integration into E-stop or gate switch circuits.

• Auxiliary Contact: Includes one additional contact for signaling or status indication.

• Multiple Reset Options: Supports automatic, manual, and monitored resets for tailored safety system behavior.

• High Safety Ratings: Certified for SIL 3 (IEC 61508), PL e and Category 4 (ISO 13849-1) safety compliance.

• Screw Terminals: Standard screw-type terminals ensure secure and reliable wiring connections.

• Compact Dimensions: Small footprint of 114.5 × 99 × 45 mm enables integration into tight control panel spaces.

The MSR138DP delivers versatile safety relay functionality, meeting the most stringent industrial safety regulations.