24 VDC Safety Monitoring
The Allen-Bradley 440R S13R2/A is a Guardmaster Compatibility Input Safety Relay designed for monitoring safety-related input circuits in compatible industrial machinery control systems. The rated control supply is 24 VDC.
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Allen-Bradley
Allen-Bradley 440R S13R2/A Safety Relay Single Input
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Allen-Bradley |
| Model Number | 440R S13R2/A |
| Manufacturer Catalog Number | 440R-S13R2 |
| Series | Series A; verify marking on individual unit |
| Product Category | Safety Monitoring Relay |
| Product Family | Guardmaster Safety Relays |
| Relay Designation | Guardmaster Compatibility Input Safety Relay (CI) |
| Rated Supply Voltage | 24 VDC |
| Operating Supply Range | 20.4 to 26.4 VDC |
| Typical Power Consumption | 3.5 W |
| Safety Inputs | 1 Dual-Channel Universal Input |
| Immediate Safety Outputs | 3 Normally Open (3 N.O.) |
| Immediate Auxiliary Outputs | 1 Normally Closed (1 N.C.) |
| Safety Output Terminals | 13/14, 23/24, 33/34 |
| Auxiliary Output Terminals | 41/42 |
| Additional Interface | Single Wire Safety (SWS) Output |
| Reset Configuration | Automatic/Manual or Monitored Manual Reset |
| Maximum Aggregate Output Current | 6 A |
| Safety Contact Rating AC-15 | 1.5 A at 250 VAC |
| Safety Contact Rating DC-13 | 2 A at 24 VDC (0.1 Hz) |
| Safety Performance Level | Up to PL e, depending on system design |
| Safety Category | Up to Category 4, depending on system design |
| Safety Integrity Level Claim Limit | SIL CL 2 |
| Enclosure Protection | IP40 / NEMA 1 |
| Terminal Protection | IP20 |
| Mounting | 35 mm DIN Rail; enclosure rated at least IP54 |
| Electrical Connection | Removable Screw Terminals |
| Supported Wire Size | 0.2 to 2.5 mm² (24 to 14 AWG) |
| Operating Temperature | -5 to +55°C |
| Dimensions (H × W × D) | 119.4 × 22.5 × 113.6 mm |
| Manufacturer UPC | 885630181684 |
| Manufacturer User Manual | Rockwell Automation Publication 440R-UM013 |
Key Features
Dual-Channel Universal Input
The relay provides one dual-channel universal input for compatible emergency-stop devices, safety switches and other safety-related input devices. The input wiring and monitoring configuration must follow the manufacturer instructions.
Three N.O. Safety Outputs
Three immediate normally open safety contacts are provided at terminals 13/14, 23/24 and 33/34, together with one normally closed auxiliary contact for signaling and monitoring functions.
Configurable Reset Operation
The relay supports automatic/manual and monitored manual reset configurations, allowing the reset behavior to be selected according to the validated machinery safety application.
Single Wire Safety Interface
The Guardmaster CI relay provides a Single Wire Safety output for supported safety relay interconnections. Verify the connection arrangement and permissible devices in the Rockwell Automation application documentation.
Compact DIN-Rail Installation
The 22.5 mm wide housing supports mounting on a 35 mm DIN rail. The manufacturer specifies installation within an enclosure providing at least IP54 protection.
Applications
- Industrial emergency-stop circuit monitoring
- Machine safety interlock systems
- Safety gate and guard switch monitoring
- Production line safety control circuits
- Packaging machinery safety systems
- Industrial automation safety relay panels
- Machine safeguarding system maintenance
- Guardmaster safety relay replacement projects
Purchase Information
We support online purchase of the Allen-Bradley 440R S13R2/A Safety Monitoring Relay. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is the Allen-Bradley 440R S13R2/A?
It is a Guardmaster Compatibility Input Safety Relay for monitoring safety-related industrial control circuits. The manufacturer catalog number is 440R-S13R2, while /A identifies the Series A version in the supplied model designation.
What is the rated operating voltage?
The relay uses a nominal 24 VDC power supply with a specified operating range of 20.4 to 26.4 VDC.
How many safety outputs does the relay provide?
It provides three immediate normally open safety outputs at terminals 13/14, 23/24 and 33/34.
Does 440R-S13R2 include an auxiliary contact?
Yes. It includes one immediate normally closed auxiliary contact intended for signaling or monitoring functions, rather than as an additional safety output.
What safety input configuration is supported?
The relay has one dual-channel universal input and supports compatible one-channel or two-channel evaluation arrangements according to the manufacturer wiring instructions.
Can it monitor emergency-stop circuits?
Yes. Rockwell Automation identifies emergency-stop circuit monitoring as a supported application when the complete safety system is correctly designed and validated.
Does the relay support monitored manual reset?
Yes. Reset modes include automatic/manual and monitored manual reset configurations. The correct reset function depends on the safety application.
What is the maximum output current?
The manufacturer specifies a maximum aggregate output current of 6 A. Contact utilization ratings and external protection requirements must also be observed.
What safety performance levels can be achieved?
The manufacturer lists suitability for applications up to Performance Level e and Category 4, with a SIL claim limit of 2. The achieved safety level depends on the complete system architecture, components and validation.
How is the relay mounted?
It mounts on a 35 mm DIN rail and must be installed in an enclosure providing at least IP54 protection according to the manufacturer instructions.
Can 440R-S13R2/A replace another Guardmaster safety relay?
Do not assume direct compatibility. Check the exact model, series, firmware where applicable, safety input circuits, output contact requirements, reset behavior, wiring configuration and system safety validation.
What should be checked before ordering?
Confirm the requested designation 440R S13R2/A, manufacturer catalog number 440R-S13R2, Series A marking, 24 VDC supply, three N.O. safety outputs, one N.C. auxiliary output, terminal configuration, safety application requirements and installation dimensions.
Need help confirming a model?
Send us your part number and technical requirements.
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