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Allen Bradley Guardmaster Safety Relays 440R-ZBR520AZ1

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440R-ZBR520AZ1

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The 440R-ZBR520AZ1 is a safety monitoring relay within Allen Bradley's Guardmaster series that ensures reliable operation in safety applications. Its dual-channel input configuration and a coil voltage range of 110 to 120 VAC make it adaptable for a variety of setups.

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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-ZBR520AZ1

ManufacturerAllen Bradley
Product TypeSafety Monitoring Relay
Product LineGuardmaster Safety Relays
Part Number440R-ZBR520AZ1
Weight1.69 lbs (0.77 kg)
Input Channel ConfigurationDual Channel
Coil Voltage110 to 120 VAC
Minimum Frequency50 Hz
Maximum Frequency60 Hz
Safety Outputs5 N.O. Contacts
Auxiliary Outputs2 N.C. Contacts
Reset ConfigurationsAutomatic/Manual or Monitored Manual
Response Time25 ms
Terminal TypeFixed Terminal
Minimum Operating Temperature-25 °C
Maximum Operating Temperature55 °C
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The model 440R-ZBR520AZ1 from Allen Bradley is designed as a safety monitoring relay specifically for critical safety applications. It boasts a dual-channel input configuration which enhances its reliability for safety functions. Users can operate this relay within the coil voltage range of 110 to 120 VAC.

The operational frequency of the relay lies between 50 Hz and 60 Hz, ensuring compatibility with various systems. The relay is equipped with five normally open safety outputs and two normally closed auxiliary outputs, allowing for flexible integration into safety circuits. With a quick response time of 25 milliseconds, it effectively manages safety procedures without delay.

For reset capability, users have options for automatic, manual, or monitored manual resets, providing adaptability to different operational requirements. The fixed terminal type facilitates straightforward installation and connection. The temperature tolerance ranges from a minimum of -25 °C to a maximum of 55 °C, making it suitable for various environments. Overall, the 440R-ZBR520AZ1 relay is a critical component for effective safety monitoring in industrial applications.