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440R-M23143
Allen Bradley 440R-M23143 Safety Relay
  1. 440R-M23143
  2. Allen Bradley 440R-M23143 Safety Relay

Allen Bradley 440R-M23143 Safety Relay

£304.69 inc VAT

In Stock · Delivered in 3–5 Working Days
Estimated UK delivery time, subject to order confirmation, courier services and destination. International delivery times vary.
Technical SpecificationsAllen Bradley
Model 440R-M23143 Allen Bradley
Product Type Monitoring Safety Relay with Delayed Outputs
Series Guardmaster MSR
Supply Voltage 24V AC/DC (50 Hz)
Voltage Type AC/DC
Mounting Type DIN Rail (35mm top hat)
Connection Type Plug-in removable terminals
Supply Voltage Range 24V AC/DC ±10%
Output Type Electromechanical relay contacts
Input Type Single or dual-channel monitoring
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SKU: 440R-M23143 Category: Tag: Brand:
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Allen Bradley 440R-M23143 Safety Relay

The Allen Bradley 440R-M23143 (MSR138DP) is a monitoring safety relay with delayed outputs designed to provide controlled stop functionality for emergency stop circuits, magnetic safety switches, and optoelectronic protection equipment. Operating on a 24V AC/DC supply , this versatile module includes three delayed and two instantaneous normally open (N.O.) safety outputs for reliable, flexible circuit management.

Technical Specifications

Model 440R-M23143 Allen Bradley
Series Guardmaster MSR
Product Type Monitoring Safety Relay with Delayed Outputs
Supply Voltage 24V AC/DC (50 Hz)
Voltage Type AC/DC
Input Configuration 1-channel or 1- and 2-channel
Safety Outputs (Delayed) 3 N.O. contacts
Safety Outputs (Instantaneous) 2 N.O. contacts
Auxiliary Outputs None
Performance Level (EN ISO 13849-1) Level e
Stop Category (IEC 60204) 1
Release Delay Adjustable 0.15…3 seconds
Mounting Type DIN Rail (35mm top hat)
Connection Type Plug-in removable terminals
Dimensions (W x H x D) 99 x 114.5 x 45 mm

Electrical & Performance Details

Supply Voltage Range 24V AC/DC ±10%
Safety Outputs 3 delayed + 2 instantaneous N.O. contacts
Output Type Electromechanical relay contacts
Input Type Single or dual-channel monitoring
Release Delay 0.15 to 3 seconds adjustable
Stop Function Category 1 (controlled stop)
Safety Category Category 4 / Performance Level e
Feedback Circuit Yes, for external contactor monitoring
Start Input Yes (manual or automatic start supported)
Muting Function No

Mechanical Specifications

Width 99 mm
Height 114.5 mm
Depth 45 mm
Mounting Standard 35mm DIN rail
Connection Plug-in removable terminal blocks
Housing Compact industrial-grade enclosure for control panels

Environmental & Application Suitability

Typical Applications Emergency stop monitoring, magnetic door switches, light curtain interfaces, and controlled stop machinery
Monitoring Capability Supports single or dual-channel inputs for redundancy
Stop Function Category 1 controlled stop (delayed power-down)
Suitable For Emergency stops, magnetic and optical protection devices
Not Suitable For Position switches, proximity sensors, or tactile edges
Installation Environment Industrial control panels and machine safety cabinets

Compliance & Certifications

Performance Level PL e (EN ISO 13849-1)
Safety Category Category 4 (IEC 62061)
Stop Category 1 (IEC 60204)
UL / cUL Listed Yes
CE Marked Yes
RoHS Compliant Yes

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Frequently Asked Questions

How can I check whether 440R-M23143 is the correct replacement?

Check the exact manufacturer part number, electrical ratings, interface type, mounting and equipment compatibility against your existing equipment and the manufacturer’s datasheet.

How quickly can 440R-M23143 be delivered?

This product is listed as in stock, with estimated UK delivery in 3–5 working days. Delivery depends on order confirmation, courier services and destination.

Where can I check specifications and compatibility?

Review the specification information above and the product’s Downloads or Data Sheets tab, where documents are supplied. Our team can help check part numbers and installation compatibility.

What warranty does Drive Outlet Megastore offer?

Drive Outlet offers its own 2-year return-to-base warranty unless otherwise stated. Manufacturer warranties may not apply; please review the Terms and Conditions before ordering.

Weight 2 kg

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440R-M23143_Technical-Data.pdf

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