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Allen Bradley Guardmaster Safety Relays 440R-W23221

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440R-W23221

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The 440R-W23221 from Allen Bradley functions as a safety relay module, operating with a control voltage of 24 VDC. It features three normally open output relays and a typical response time of 10 milliseconds, suitable for rapid safety management applications.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 440R-W23221

ManufacturerAllen Bradley
Product TypeSafety Relay Module
Product LineGuardmaster Safety Relays
Part Number440R-W23221
Weight0.44 lbs (0.20 kg)
UPC662074543601
Control Voltage24 VDC
Output Relays3 Normally Open (NO)
Response Time10 ms (typical)
CertificationUL, CE, CSA
Power Consumption1.5 W
Auxiliary Output1 Normally Closed (NC)
Mounting TypeDIN Rail
Operation ModeImmediate Output
TerminalsRemovable
Module TypeModular Monitoring Safety
Relay TypeMSR330P
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The Allen Bradley 440R-W23221 serves as a safety relay module, specifically crafted to enhance safety monitoring in industrial applications. Operating at a control voltage of 24 VDC, it delivers efficient performance. This module incorporates three normally open relays, allowing quick activation in response to safety circuit requirements. Additionally, it includes one normally closed auxiliary output for further functionality.

The response time of this device is typically around 10 milliseconds, ensuring that safety measures can be promptly implemented during critical circumstances. Power consumption is rated at 1.5 watts, making it energy efficient.

The 440R-W23221 is certified by UL, CE, and CSA, giving confidence in its reliability and adherence to safety standards. For simplified installation, the unit is designed for DIN rail mounting, facilitating secure fitting in panel setups. The module adopts an immediate output operation mode, allowing for rapid engagement of connected devices during fault conditions.

Terminals are removable, which simplifies wiring and maintenance. This safety relay module types are specified as Modular Monitoring Safety, categorizing them as essential elements in comprehensive safety control systems. It uses the MSR330P relay type, known for reliability in challenging environments.