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Allen Bradley Guardmaster Safety Relays 440R-S845AER-NNL

Product image is representative; revision or series may vary. Contact us to request a specific version.

440R-S845AER-NNL

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The 440R-S845AER-NNL is a speed monitoring safety relay from Allen Bradley's Guardmaster series, designed to enhance operational safety. It requires a 24 VDC power supply and features multiple input and output configurations for flexible integration into various systems.

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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-S845AER-NNL

ManufacturerAllen Bradley
Product TypeSpeed Monitoring Safety Relay
Product LineGuardmaster Safety Relays
Part Number440R-S845AER-NNL
UPC612598544608
Weight0.75 lbs (0.34 kg)
Power Supply24 VDC
Auxiliary Output Contacts4 N.O. Solid State Contacts
Terminal TypesRemovable Terminals
Power Consumption5W
Output Voltage24 VDC
Max. Power On Delay3 seconds
Enclosure Protection RatingIP40
Terminal Protection RatingIP20
Input Contacts5 x 1 N.C., 2 N.C., LC, 1 N.O. + 1 N.C. Contacts
Mounting MethodDIN-35 Rail Mount
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The Allen Bradley 440R-S845AER-NNL serves as a speed monitoring safety relay, crucial for ensuring safety in operational environments. Capable of functioning on a 24 VDC power supply, this device is efficient with power consumption rated at just 5 watts. Users benefit from its comprehensive input configuration that includes five normally closed contacts as well as additional two normally closed and one normally open plus normally closed contacts.

This relay features four normally open solid-state auxiliary output contacts, facilitating effective communication within safety circuits. The unit is designed for easy installation on DIN-35 rails, which simplifies the integration process into control panels. Moreover, with an IP40 enclosure protection rating, the relay is safeguarded against solid contaminants, while terminal areas maintain an IP20 rating for further durability.

For optimal performance, the relay allows for a maximum power-on delay of 3 seconds. The elegant design also includes removable terminals, enhancing wiring and maintenance efficiency. Overall, the 440R-S845AER-NNL is suitable for various safety monitoring applications, accentuating user safety in dynamic industrial settings.