Overview
The Allen-Bradley W64 is a Type W heater element designed for thermal overload relay protection in industrial motor control systems. With a current rating of 27.2–36.9 amps, this eutectic alloy component is a standard replacement part for Bulletin 500 Line starters and magnetic motor controllers. The W64 features a Trip Class 20 rating with manual reset, making it suitable for general-purpose motor protection applications.
Key Features
- Current rating: 27.2–36.9 amps
- Trip Class 20 with manual reset operation
- Eutectic alloy construction for reliable overload relay operation
- Compatible with Bulletin 500 Line starters and thermal overload relays
- Used for thermal overload relays, magnetic motor starters, and motor controls
Technical Specifications
- Current Rating: 27.2–36.9 amps
- Type: Heater Element (Eutectic Alloy)
- Trip Class: Class 20
- Reset Type: Manual
- Standard: KC (NEMA)
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Series: Type W, 500 Line
Typical Applications
The W64 is used for thermal overload relays, magnetic motor starters, and motor controls. Type W heater elements provide Class 20 operation and are recommended for general applications. Common uses include:
- Three-phase AC induction motor protection
- Bulletin 500 Line magnetic starters (Sizes 0–3)
- General industrial motor control circuits
- Equipment protection in commercial and industrial environments
Compatibility & Replacements
Compatible With
- Allen-Bradley Bulletin 500 Line starters
- Allen-Bradley thermal overload relays
- Magnetic motor starters (NEMA sizes 0, 1, 2, 3)
- Type W overload relay bases
- Standard motor control circuits
Replaces / Drop-In Replacement For
The Allen-Bradley W64 serves as a direct replacement for original W64 heater elements in existing 500 Line installations. Always verify the correct part number with your overload relay base or starter documentation before ordering.
Works With
- Allen-Bradley motor control centers
- Combination starters with thermal overload relays
- Manual and magnetic motor starter panels
- NEMA-rated industrial control systems
- Class 20 overload protection schemes
