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Allen Bradley Guardmaster Safety Relays 440R-N23128

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440R-N23128

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The 440R-N23128, part of Allen Bradley's Guardmaster Safety Relays, is a safety relay designed with a monitored manual terminal. It is equipped with three normally open (N.O.) safety outputs and one normally closed (N.C.) auxiliary output, suitable for various safety applications.

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2 Year DO Supply Warranty
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-N23128

ManufacturerAllen Bradley
Product TypeSafety Relay
Product LineGuardmaster Safety Relays
Part Number440R-N23128
Weight0.63 lbs (0.28 kg)
Terminal TypeMonitored Manual Terminal
Auxiliary Outputs1 N.C.
Safety Outputs3 N.O.
Input Contact1 N.C., 2 N.C., Light Curtain
Min. Operating Temperature Rating0 °C
Max. Operating Temperature Rating40 °C
Rated Voltage115 V
Voltage TypeAC
Max. Storage Humidity80% (Non-Condensing)
Max. Operating Altitude1000 MSL
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The Allen Bradley 440R-N23128 represents a highly functional safety relay utilized in safety-critical applications within industrial environments. This unit offers a monitored manual terminal designed for simplicity while ensuring user safety. Featuring three normally open safety outputs, it effectively meets various safety standards needed in operational processes. The auxiliary output is a normally closed type, adding to its versatility in application utilization.

This relay is equipped to handle an input configuration that includes one normally closed contact, two additional normally closed contacts, and a light curtain input. This arrangement allows for flexible installation setups to suit diverse operational requirements. The unit is rated for a voltage of 115 V AC, making it applicable in standard AC-powered systems.

Temperature resilience is noted with an operational range from 0 °C to 40 °C, providing a suitable environment for performance. The 440R-N23128 can be installed at altitudes up to 1000 meters above sea level, accommodating a wide range of installation locations. Additionally, with a maximum storage humidity rating of 80% under non-condensing conditions, it maintains functionality in varied climate conditions, enhancing its reliability as an effective safety relay in a multitude of industrial applications.