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Allen Bradley Bulletin 509 509-DOH

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509-DOH

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The 509-DOH, a non-reversing motor starter from Allen Bradley's Bulletin 509 series, handles a continuous current of 90 A with a service limit of 104 A. This starter operates at a line voltage of 200–208 V AC and is suitable for 3-phase applications at 60 Hz.

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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 509-DOH

ManufacturerAllen Bradley
Product TypeNon-Reversing Motor Starter
Product LineBulletin 509
Part Number509-DOH
Weight4.31 lbs (1.96 kg)
UPC781180218569
Continuous Current90 A
Service Limit104 A
Line Voltage200–208 V AC, 60 Hz
Control Voltage208 V AC, 60 Hz
Phases3-phase
EnclosureOpen Style
NEMA Size3
Max Motor Power25 HP
Overload RelayEutectic Thermal
Starter TypeDirect-on-Line (DOL)
Inrush Current947 A Peak
Coil Voltage Range85–110% Nominal
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The 509-DOH from Allen Bradley is engineered as a non-reversing motor starter, ensuring reliable operation for various industrial applications. It operates effectively at a line voltage of 200 to 208 volts AC and is designed to support 3-phase configurations at 60 Hz. With a continuous current rating of 90 A, it provides adequate power handling, while the service limit extends to 104 A, allowing for brief periods of increased demand.

This motor starter has a maximum capacity of 25 HP, making it suitable for numerous applications while its NEMA size 3 classification ensures proper integration into existing setups. The open-style enclosure promotes excellent heat dissipation and accessibility for installation and maintenance, ensuring straightforward operation. Overloading conditions are managed with a eutectic thermal overload relay, contributing to the safety of the connected motor.

The starter is capable of handling significant inrush conditions, rated at a peak of 947 A, which accommodates high-starting torque applications. Additionally, the coil voltage can fluctuate within a range of 85% to 110% of nominal voltage, enhancing flexibility in varying operational conditions. The bulletin 509-DOH provides comprehensive motor control in a robust package, serving well in demanding environments.