Allen-Bradley 505-B0D Full-Voltage Reversing Contactor

Description:

The Allen-Bradley 505-B0D is a Bulletin 505 full-voltage reversing contactor designed for starting and reversing three-phase AC motors in industrial applications. This NEMA Size 1 open-type contactor is rated for 600 VAC and up to 10 HP, providing reliable forward and reverse motor control through mechanically and electrically interlocked contact assemblies. It is commonly used in conveyors, hoists, pumps, machine tools, and manufacturing equipment where controlled bidirectional motor operation is required.

Applications:

The Allen-Bradley 505-B0D is designed to provide across-the-line starting and reversing of three-phase AC motors by changing the phase sequence supplied to the motor. It is commonly used in conveyors, cranes, hoists, mixers, machine tools, and industrial automation systems where forward and reverse operation is required. The reversing contactor incorporates interlocks to prevent simultaneous engagement of forward and reverse circuits, improving equipment safety and reliability.

Technical Specifications:

• Manufacturer: Allen-Bradley / Rockwell Automation
• Manufacturer Part Number (MPN): 505-B0D
• Product Series: Bulletin 505
• Product Type: Full Voltage Reversing Contactor / Reversing Starter
• NEMA Size: 1
• Rated Current: 27 A
• Rated Voltage: 600 VAC Maximum
• Motor Rating: 10 HP
• Number of Poles: 3 Power Poles
• Phase: Three Phase
• Control Type: Full Voltage Across-the-Line
• Reversing Method: Phase Sequence Reversal
• Interlocking: Mechanical and Electrical
• Enclosure Type: Open Style
• Mounting Type: Panel Mount
• Frequency: 50/60 Hz
• Application: Motor starting and reversing
• Compatible Equipment: Conveyors, pumps, hoists, machine tools, and industrial machinery
• Operating Environment: Industrial indoor applications
• Status: Legacy / Replacement component

Common Replacements:

• Allen-Bradley 505-BOD Reversing Starter
• Allen-Bradley 500F-BOD Feed-Through Contactor
• Allen-Bradley 509-BOD Non-Reversing Starter (when reversing is not required)