Allen Bradley 440R-C23139 Safety Relay – MSR131RTP, 24V AC/DC Supply, 3 N.O. Safety Outputs, Auto/Manual or Manual Monitored Reset

The Allen Bradley 440R-C23139 (MSR131RTP) is a single-function safety relay designed for reliable monitoring of emergency stop circuits, magnetic switches, and other safety input devices. Operating with a flexible 24V AC/DC supply, this compact relay module supports automatic/manual reset or manual monitored reset configurations, providing enhanced control options for various machine safety applications.

Featuring 3 normally open (N.O.) safety contacts and 1 auxiliary contact, the 440R-C23139 achieves Performance Level “e” in accordance with EN ISO 13849-1. The unit is equipped with removable terminal blocks, feedback circuit monitoring, and DIN rail mounting capability for easy installation and maintenance in compact control panels.

Technical Specifications

Model: 440R-C23139 Allen Bradley
Series: 440R Single Function Safety Relays
Product Type: Safety Relay Module
Supply Voltage: 24V AC/DC
Voltage Type: AC/DC
Input Configuration: 1-channel or 1- and 2-channel monitoring
Safety Outputs (Instantaneous): 3 N.O. contacts
Auxiliary Outputs: 1 signalling contact
Performance Level (EN ISO 13849-1): Level e
Reset Modes: Automatic/Manual or Manual Monitored Reset
Mounting Type: DIN Rail (35mm top hat)
Connection Type: Plug-in connection with removable clamps
Dimensions (W x H x D): 45 x 99 x 114.5 mm

Electrical & Performance Details

• Supply Voltage Range: 24V AC/DC ±10%
• Contact Type: 3 N.O. safety contacts + 1 auxiliary contact
• Output Type: Electromechanical relay contacts
• Input Type: Single or dual-channel monitoring
• Safety Category: Category 4 / Performance Level e
• Start Input: Yes (for monitored or manual reset)
• Feedback Circuit: Yes, for external contactor monitoring
• Muting Function: No
• Stop Category: 0 (IEC 60204)

Mechanical Specifications

• Width: 45 mm
• Height: 99 mm
• Depth: 114.5 mm
• Mounting: 35mm DIN rail
• Connection: Plug-in removable terminals
• Construction: Compact safety relay housing with detachable clamps

Environmental & Application Suitability

• Typical Applications: Emergency stop circuits, magnetic switch monitoring, and basic machine guarding systems
• Suitable For: Monitoring emergency stops and magnetic switches
• Not Suitable For: Optoelectronic, proximity, position, or tactile sensors
• Stop Function: Category 0 stop according to IEC 60204
• Installation Environment: Industrial control cabinets and machinery safety panels

Compliance & Certifications

• Performance Level: PL e (EN ISO 13849-1)
• Safety Category: Category 4 (IEC 62061)
• UL / cUL Listed: Yes
• CE Marked: Yes
• RoHS Compliant: Yes

Key Features & Benefits

✅ Dual-voltage input operation with 24V AC or DC flexibility.

✅ 3 N.O. safety contacts provide reliable control circuit interruption.

✅ 1 auxiliary contact for diagnostic or signalling purposes.

✅ Automatic or monitored manual reset options for adaptable system design.

✅ Compact 45mm housing saves space in control panels.

✅ DIN rail mounting simplifies installation and wiring.

✅ Meets PL e and Category 4 safety standards for high-integrity safety systems.

📦 Order the Allen Bradley 440R-C23139 from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 440R-C23139 prices, with fast UK & EU delivery and expert support for Guardmaster safety systems and industrial machine protection applications.

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Protect personnel and machinery with Allen Bradley MSR131RTP safety relay solutions — precision-engineered for reliability and compliance at Drive Outlet Megastore.