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Allen Bradley Guardmaster Safety Relays 440R-E21357

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440R-E21357

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The 440R-E21357 from Allen Bradley represents a reliable GuardMaster safety relay designed for a variety of applications. This component utilizes a power supply voltage of 115 V AC and incorporates safety outputs featuring six normally open contacts.

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Ships from Raleigh, NC
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-E21357

ManufacturerAllen Bradley
Product TypeGuardMaster
Product LineGuardmaster Safety Relays
Part Number440R-E21357
Weight0.50 lbs (0.23 kg)
UPC611320860108
Power Supply Voltage115 V AC
Output Switching Current (AC)4 A
Output Switching Current (DC)2.0 A
Rated Voltage (DC)24 V DC
Housing Width100 mm
Reset FunctionNot Installed
Minimum Frequency Rating50 Hz
Maximum Frequency Rating60 Hz
Safety Outputs6 Normally Open Safety Contacts
Auxiliary Contacts1 Auxiliary Contact
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The Allen Bradley 440R-E21357 is part of the Guardmaster series and functions as a safety relay in various industrial settings. Operating at a standard power supply voltage of 115 V AC, this model is equipped to handle an output switching current of 4 A for alternating current and 2 A for direct current applications. The rated voltage for DC applications is set at 24 V, ensuring compatibility across different systems.

This safety relay includes six normally open contacts that enhance its functionality, providing significant control over safety-related operations. Additionally, there is one auxiliary contact for expanded operational capability. The overall design features a compact housing width of 100 mm, which allows for easy integration into existing setups. Importantly, this unit does not come with a reset function, which could be a consideration for specific application needs.

The 440R-E21357 operates efficiently within a frequency range of 50 Hz to 60 Hz, making it suitable for various environments. With its UPC code of 611320860108, this model is easily identifiable within Allen Bradley’s lineup of safety solutions, offering reliable performance in safeguarding machinery and personnel.