Allen-Bradley 440R-W23221 | Guardmaster Safety Relay Module

Specifications

  • Manufacturer: Allen Bradley

  • Product No.: 440R-W23221

  • Condition： 10 Items in Stock

  • Product Type: Digital Output Relay Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 1150g

  • Shipping port: Xiamen

  • Warranty: 12 months

Product details

Description

Overview

The Allen-Bradley 440R-W23221 Guardmaster MSR330P Group 1 is an output expansion module for the MSR300 modular safety relay system. It delivers additional safety outputs and auxiliary signaling, ensuring safe and reliable machine control in industrial automation.

The module communicates logic directly from the MSR300 base module, providing three normally open (N.O.) safety contacts and one normally closed (N.C.) auxiliary contact. Reset logic and fault diagnostics are managed by the base unit, keeping system control centralized.

Electrical Ratings and Power

The 440R-W23221 operates on 24 V DC with a power consumption of 1.5 W. Proper operation requires external fusing of 6 A slow blow or 10 A quick blow. It uses copper conductors rated 60/75 °C with recommended wire sizes from 0.2–2.5 mm² (24–12 AWG), tightened to a terminal screw torque of 0.6–0.8 N·m.

Mechanical Design and Mounting

This module is DIN rail mountable on a 35 mm standard rail, allowing easy installation inside industrial control cabinets. It features removable terminals for convenient wiring, and the housing is rated IP40, with terminals rated IP20, ensuring protection against dust and accidental contact.

Certifications and Compliance

The Allen-Bradley 440R-W23221 meets global safety standards including ISO 13849-1 (PLe, Cat. 4) and IEC 62061 / IEC 61508 (SIL CL 3). It is also UL, CE, and TÜV certified, making it suitable for industrial automation applications worldwide.

Environmental and Installation Notes

Ensure secure mounting on a protected DIN rail and avoid excessive vibration, following IEC 60068-2-6/7 guidelines. Use proper grounding and copper conductors to maintain long-term reliability.

Technical Specifications

Specification Details
Catalog Number 440R-W23221
Series MSR330P Group 1
Function Output expansion module for MSR300
Safety Outputs 3 × Normally Open (N.O.)
Auxiliary Output 1 × Normally Closed (N.C.)
Operating Voltage 24 V DC
Power Consumption 1.5 W
Input Type Logic from base module only
Mounting 35 mm DIN rail
Terminal Type Removable
Wire Size 0.2–2.5 mm² (24–12 AWG)
Terminal Screw Torque 0.6–0.8 N·m
Enclosure Rating IP20 (terminals), IP40 (housing)
External Fusing 6 A slow blow / 10 A quick blow
Certifications ISO 13849-1: PLe, Cat. 4; IEC 62061 / IEC 61508: SIL CL 3; UL, CE, TÜV
Country of Origin USA

Key Features

  • Provides three N.O. safety outputs and one N.C. auxiliary contact.

  • Operates at 24 V DC, consuming only 1.5 W.

  • DIN rail mountable with removable terminals for easy installation.

  • IP20/IP40 rated housing, suitable for protected enclosures.

  • Certified to ISO 13849-1 PLe, Cat. 4 and IEC 61508 SIL CL 3.

  • Compatible only with MSR300 base modules, ensuring centralized control.

 



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