Overview
The Allen-Bradley CB273 operating coil is a genuine magnetic contactor coil engineered for industrial motor control applications. This coil is rated for 440/480VAC operation at both 50Hz and 60Hz frequencies, making it suitable for global industrial installations. The CB273 is specifically designed for use with Bulletin 509-line NEMA size 0-1 motor starters and contactors, delivering consistent electromagnetic performance in demanding electrical environments.
Key Features
- Dual-voltage rating: 440/480VAC compatible with 50Hz and 60Hz power systems
- NEMA size 0-1 designation for compact, space-efficient mounting
- Drop-in replacement for 509-A and 509-B motor starters
- Genuine Allen-Bradley component with proven reliability in industrial duty cycles
- Screw-terminated design for secure electrical connections
Technical Specifications
The CB273 meets industry standards for contactor and starter coils. Its construction ensures stable hold-in voltage and fast-acting magnetic engagement, critical for motor control circuits. The coil is engineered to withstand thermal cycling and electrical transients common in factory environments.
Typical Applications
- Industrial motor starters and contactors (NEMA size 0-1)
- Manufacturing equipment control circuits
- Pump and compressor starter replacements
- Machine tool motor control
- OEM equipment rebuild and repair
Compatibility & Replacements
The CB273 is a replacement for Allen-Bradley Bulletin 509-line motor starter coils and is compatible with 509-A and 509-B contactor assemblies. When replacing worn or failed coils in existing installations, the CB273 provides immediate plug-and-play functionality. Repco Industries offers the CB273 as part of its replacement coil portfolio (Repco AB51480), ensuring availability through multiple distribution channels.
