The Allen-Bradley MSRT is a compact single-function safety relay from the Guardmaster series, designed to monitor emergency stop buttons, safety gates, light curtains, and other safety devices in industrial automation systems. It provides reliable safety monitoring by ensuring that machinery is stopped in the event of a safety breach or component failure. The relay supports automatic or manual reset, allowing for flexible integration into various safety applications.

Key Features:

• Safety Inputs:

• Supports single-channel ( N.C.) or dual-channel ( N.C.) safety device connections.

• Can be used with light curtains for advanced safety applications.

• Safety Outputs:

• Three normally open (NO) redundant safety contacts for controlling safety circuits.

• One normally closed (NC) auxiliary contact for diagnostics or signaling.

• Reset Options:

• Configurable for automatic or manual reset, depending on system requirements.

• Cross-Fault Monitoring:

• In dual-channel configurations, the relay monitors for cross-faults between input circuits, enhancing safety.

• Mounting & Integration:

• Compact . mm DIN rail mount design for easy integration into control panels.

• Operating Voltage:

• V AC/DC, allowing compatibility with standard industrial power supplies.

• Safety Certifications & Compliance:

• Meets ISO - (PL e, Category ), IEC (SIL CL), and EN - safety standards.

• TÜV, UL, and CSA certified, ensuring compliance with international safety regulations.

• Diagnostic Indicators:

• LED indicators for input, output, and power status, providing real-time system diagnostics.

Technical Specifications:

• Power Supply: V AC/DC

• Relay Output Capacity: A at V AC (AC-), A at V DC (DC-)

• Response Time: < ms

• Dimensions: . mm (H) x . mm (W) x mm (D)

• Operating Temperature: -°C to +°C (°F to °F)

• Mounting Type: DIN rail

Allen-Bradley - MSR127T - Guardmaster Safety Relay, 24V AC/DC, 3NO/1NC Outputs