Allen-Bradley 1336-PB-SP2B Pre-charge Circuit Board

Description:

The Allen-Bradley 1336-PB-SP2B Pre-charge Circuit Board is a replacement printed circuit board used in Bulletin 1336 series AC drives to control the pre-charge function of the DC bus capacitors during drive startup. Commonly installed in Allen-Bradley 1336 PLUS, 1336 PLUS II, 1336 FORCE, IMPACT, and REGEN AC drives where controlled charging of the DC bus is required to reduce inrush current and protect power components. Maintenance teams, OEMs, and system integrators use this board for drive repairs, preventive maintenance, and restoration of legacy variable frequency drives.

Applications:

The Allen-Bradley 1336-PB-SP2B Pre-charge Circuit Board is commonly used in industrial automation systems, conveyors, pumps, fans, compressors, and manufacturing equipment utilizing Allen-Bradley 1336 series AC drives. The 1336-PB-SP2B configuration manages the DC bus pre-charge sequence, helping protect capacitors and power semiconductors from excessive startup current while ensuring reliable drive operation.

Technical Specifications:

• Manufacturer: Allen-Bradley / Rockwell Automation
• Model / Part Number: 1336-PB-SP2B
• Product Type: Pre-charge Circuit Board
• Board Type: Printed Circuit Board (PCB)
• Function: Controls DC Bus Capacitor Pre-charge
• Compatible Drive Series: 1336 PLUS, 1336 PLUS II, 1336 FORCE, IMPACT, REGEN
• Compatible Voltage Ratings: 200–600 VAC Drives
• Compatible Power Ratings: 1–600 HP (drive dependent)
• Mounting: Internal Drive Mounting Plate
• Connectors: J1, J2, J3, J4
• Operating Principle / Function: Limits inrush current by controlling the charging sequence of the DC bus capacitors during power-up
• Application Environment: Industrial Automation and Variable Frequency Drive Systems

Common Replacements:

• Allen-Bradley 1336-PB-SP2A Pre-charge Circuit Board
• Allen-Bradley 1336-PB-SP2C Pre-charge Circuit Board
• Allen-Bradley 1336 Series Pre-charge PCB Assemblies