Overview
The Allen-Bradley W64 thermal overload relay heater element is a eutectic alloy-type component engineered for thermal overload protection in NEMA motor control applications. Rated for 27.2–36.9 amps, the W64 is designed for integration into magnetic motor starters and motor control systems where reliable thermal protection is critical. The W64 provides Class 20 operation and is recommended for general applications.
Key Features
- Eutectic alloy type overload relay element for Bulletin 500 Line Starters
- Trip Class 20 with manual reset
- Compatible with thermal overload relays, magnetic motor starters and motor controls
- Type W heater element configuration for NEMA Size 2 applications
- Compact, drop-in replacement design for existing Bulletin 500 systems
Technical Specifications
- Current Rating: 27.2–36.9 Amps
- Heater Type: Eutectic Alloy
- Trip Class: 20
- Reset Type: Manual
- Element Type: Type W
- NEMA Size 2 Motor Starter
- Weight: 0.05 lb
- Standard: KC
- UPC: 78118015469
Typical Applications
The Allen-Bradley W64 is widely used in:
- Three-phase AC squirrel cage motor protection
- Industrial machinery drive systems
- HVAC motor control panels
- Pump and fan motor starters
- Manufacturing and process automation equipment
- General industrial motor applications in 40°C ambient environments
Compatibility & Replacements
Compatible With
- Allen-Bradley Bulletin 500 Line Motor Starters (NEMA Size 2)
- Thermal overload relay assemblies for motor protection
- Magnetic motor starters
- Motor control systems requiring eutectic-type heater elements
Replaces / Drop-In Replacement For
The W64 is a direct replacement for original Allen-Bradley Bulletin 500 systems. Always verify the original heater element model number and amperage rating before ordering to ensure proper motor protection and compliance with system design specifications.
Works With
- Rockwell Automation Bulletin 500 motor starter line
- NEMA-rated magnetic starters
- Standard industrial motor control relay systems
- Manual reset thermal overload relay assemblies
