Products Description
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Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Allen-Bradley Guardmaster MSR138DP Safety Relay |
| Model Number | 440R-M23143 |
| Manufacturer | Rockwell Automation / Allen-Bradley |
| Product Series | Guardmaster MSR138DP |
| Product Type | Safety Relay with Delayed Outputs |
| Safety Outputs | 2 N.O. Instantaneous + 3 N.O. Delayed Outputs |
| Input Configuration | 1 or 2 N.C. Channels + Light Curtain Input |
| Reset Type | Automatic / Manual Monitored |
| Supply Voltage | 24V AC/DC |
| Operating Voltage Range | 20.4–26.4V |
| Power Consumption | Approx. 4 W |
| Switching Capacity | 5 A at 250V AC |
| Time Delay Range | 0.15–3 Seconds |
| Response Time | Approx. 15 ms |
| Recovery Time | Approx. 100 ms |
| Mounting Type | 35 mm DIN Rail Mount |
| Terminal Type | Removable Screw Terminals |
| Protection Rating | IP20 / IP40 (NEMA 1 Enclosure) |
| Safety Rating | SIL 3, PLe, Category 4 |
| Operating Temperature | -5°C to 55°C |
| Relative Humidity | Up to 90% Non-Condensing |
| Dimensions | 99 × 45 × 114.5 mm |
| Weight | Approx. 0.35 kg |
| Application | Emergency Stop, Safety Gate, and Light Curtain Monitoring |
FAQ
FAQ
Q1: What is the Allen-Bradley 440R-M23143 used for?
The 440R-M23143 is a Guardmaster MSR138DP safety relay used for monitoring emergency-stop circuits, safety gates, light curtains, and other industrial safety devices.
Q2: What type of outputs does the 440R-M23143 provide?
This safety relay includes 2 instantaneous normally open (N.O.) safety outputs and 3 delayed normally open (N.O.) outputs.
Q3: What power supply does the 440R-M23143 require?
The relay operates on a 24V AC/DC power supply with an operating voltage range of approximately 20.4–26.4V.
Q4: What is the delay time range of the 440R-M23143?
The delayed outputs can be adjusted from 0.15 seconds up to 3 seconds depending on the application requirements.
Q5: What safety standards does the 440R-M23143 support?
The relay supports SIL 3, Performance Level e (PLe), and Category 4 safety standards for industrial machine protection.
Q6: What applications commonly use the 440R-M23143?
It is commonly used for monitoring E-stop circuits, safety doors, proximity switches, tactile sensors, and light curtain systems in industrial automation environments.
Q7: What are the dimensions and weight of the 440R-M23143?
The approximate dimensions are 99 × 45 × 114.5 mm, and the unit weighs about 0.35 kg.
Q8: Is the 440R-M23143 suitable for industrial environments?
Yes, the relay is designed for industrial safety applications and supports DIN rail mounting with IP20/IP40 enclosure protection ratings
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Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
