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Allen Bradley Bulletin 520F 520F-AOB

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520F-AOB

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The 520F-AOB from the Allen Bradley Bulletin 520F series is a torque starter designed for reliable motor control. With a maximum motor voltage rating of 600 V AC and a continuous ampere rating of 18 A, it supports motors up to 5 HP efficiently.

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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 520F-AOB

ManufacturerAllen Bradley
Product TypeTorque Starter
Product LineBulletin 520F
Part Number520F-AOB
UPC781180290148
Rated Maximum Motor Voltage600 V AC
Continuous Ampere Rating18 A
Motor Horsepower Rating5 HP
Overload RelayEutectic-alloy overload relay
Electrical ConnectionScrew-type connections
Maximum Rated Supply Frequency60 Hz
Phase / Poles Configuration3-Phase, 3-Pole
EnclosureOpen Type
SizeNEMA Size 0
Temperature CompensationYes
Mounting MethodPanel/Surface Mounting
CertificationsUL Listed, CSA Certified
Starter Type2-Speed Con/Var Torque Starter
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The Allen Bradley 520F-AOB is a torque starter featuring robust specifications tailored for electrical applications. Operating with a maximum voltage of 600 V AC, this device ensures functionality for motors rated at up to 5 horsepower. It can handle a continuous current of 18 amperes, providing substantial power for various motor operations.

This starter is equipped with an eutectic-alloy overload relay, designed to safeguard motor integrity against excess current conditions. Electrical connections are established using reliable screw-type connectors, simplifying installation and maintenance. The 520F-AOB operates effectively with a maximum supply frequency of 60 Hz and is configured to support a 3-phase, 3-pole system.

Designed as an open-type enclosure, the 520F-AOB allows for adequate airflow, aiding in heat dissipation. Classified as NEMA Size 0, this starter is compact enough for space-limited environments while maintaining optimal performance. Moreover, it features temperature compensation, which allows the device to adjust across varying ambient conditions effectively.

For installation, the starter supports both panel and surface mounting methods, providing flexibility in different scenarios. It also comes with notable safety certifications, being UL Listed and CSA Certified, which confirms its compliance with industry standards. The 520F-AOB torque starter operates as a 2-speed con/var torque starter, adding versatility to control applications.