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Allen Bradley Guardmaster Safety Relays 440R-H23178

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440R-H23178

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The 440R-H23178 from Allen Bradley is a modular safety relay input extension module designed for increasing input capabilities of a base unit. It supports multiple configurations for N.C. inputs and operates at a standard supply voltage of 24 V DC.

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Ships from Raleigh, NC
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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-H23178

ManufacturerAllen Bradley
Product TypeModular Safety Relay Input Extension Module
Product LineGuardmaster Safety Relays
Part Number440R-H23178
Weight0.25 lbs (0.11 kg)
UPC611320809893
FunctionProvides additional dual-channel inputs for a base unit
Inputs1 N.C. (Normally Closed), 2 N.C. (with cross-fault monitoring), or Safety Mat applications
Supply Voltage24 volts DC (typically)
Auxiliary Outputs0 (No auxiliary outputs)
TerminalsRemovable Screw Terminals
Housing TypeDIN rail mountable
Safety CategoryApplications up to Category 4
Enclosure ProtectionNEMA 1 (IP40) rated
Protection of TerminalIP20 rated
Operating Temperature-10 to 55 degrees Celsius
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The part number 440R-H23178 is a modular safety relay input extension module from Allen Bradley's Guardmaster Safety Relays series. This module serves to expand the input capabilities of a corresponding base unit. It allows for various input configurations, including one normally closed (N.C.) input and two N.C. inputs with cross-fault monitoring, making it versatile for applications involving safety mats.

It typically operates with a 24 volts DC supply. The extension module contains no auxiliary outputs, simplifying its design. Connections are made through removable screw terminals, ensuring straightforward installation and maintenance. The module is designed to be mounted on DIN rail, allowing for efficient integration within control panels.

For safety standards, this extension module supports applications up to Safety Category 4, making it suitable for higher risk environments. Its enclosure offers NEMA 1 (IP40) protection, while terminal protection is rated IP20, shielding the internal components from dust and other contaminants. The operational temperature range for this device is between -10 and 55 degrees Celsius, permitting its use in various environmental conditions. Overall, the 440R-H23178 is a reliable choice for enhancing the safety and functionality of automation systems.