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Allen Bradley Guardmaster Safety Relays 440R-E21358

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440R-E21358

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The 440R-E21358 safety relay module is designed by Allen Bradley within the Guardmaster Safety Relays series, intended for various safety applications. This module operates at a voltage of 24 V AC/DC and features an automatic reset mode for ease of use.

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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-E21358

ManufacturerAllen Bradley
Product TypeSafety relay module
Product LineGuardmaster Safety Relays
Part Number440R-E21358
Weight0.50 lbs (0.23 kg)
UPC10611320826460
Operating Voltage24 V AC/DC
Reset ModeAuto reset
Input Format1 NC or 2 NC
Safety Contacts6 × NO
Monitor Contact1 × NC
Output EnduranceLow-current rated
Power Use~3 W class
Wire Capacity24–12 AWG
Surge Withstand~2.5 kV
Terminal Torque~0.4 Nm
Mounting MethodDIN-35 rail
Termination StyleFixed terminals
Status IndicationLED indicators
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The Allen Bradley part number 440R-E21358 serves as a safety relay module engineered for reliable performance in safety applications. Rated for operation at 24 V AC/DC, this device provides essential functionality for safeguarding equipment and personnel. It employs an auto reset mechanism, ensuring effortless recovery after a fault condition.

The input format is versatile, accommodating configurations for either 1 NC or 2 NC, thus enhancing compatibility with various safety sensor setups. With six normally open safety contacts and one normally closed monitor contact, it supports multiple safety interlocks and monitoring needs. The module’s output endurance is rated for low-current, making it suited for applications where minimal current is required.

Power consumption is around 3 watts, demonstrating efficient energy usage. The 440R-E21358 is designed to handle wire sizes between 24 AWG and 12 AWG, allowing for flexible installation options. Additionally, it boasts a surge withstand capability of approximately 2.5 kV, providing robustness against transient voltage spikes. Terminal torque specifications are about 0.4 Nm, ensuring secure connections.

For mounting, this module is compatible with DIN-35 rail systems, streamlining installation within control cabinets. The termination style utilizes fixed terminals, which offers straightforward wiring options. Moreover, LED indicators are incorporated for status indication, providing visual feedback regarding the relay’s operational state. The 440R-E21358 safety relay module is an integral component for maintaining safety standards in automated systems.