Overview
The Allen-Bradley W63 is a NEMA-standard thermal overload relay heater element designed for Bulletin 500 Line motor starters and overload relays. This eutectic alloy Type W element delivers Class 20 protection, making it the industry standard choice for motor overload safeguarding in general industrial applications. The W63 is engineered to trip reliably when motor current exceeds safe operating limits, preventing equipment damage and downtime.
Key Features
- Eutectic Alloy Construction: Eutectic alloy type overload relay designed for Bulletin 500 Line Starters
- Class 20 Trip Rating: Class 20 operation recommended for general applications
- Type W Standard Heater: Allen-Bradley standard overload relay protection for the 500 Line uses Type W heater elements
- Wide Amperage Range: Available for 26.4 AMP @ Size 0, 27.6 AMP @ Size 1, 28.5 AMP @ Size 2, and 30.5 AMP @ Size 3
- Manual Reset Type: Standard manual reset operation for operator control
- Reliable Performance: Proven thermal element for consistent, repeatable motor protection across industrial operations
Technical Specifications
The Allen-Bradley W63 meets NEMA specifications for thermal overload protection across multiple motor starter sizes and amperage ratings.
Typical Applications
- Three-phase AC motor protection in Bulletin 500 Line starters
- General industrial automation and machinery control
- Manufacturing production lines requiring standard overload protection
- HVAC systems with motor-driven equipment
- Pump and compressor motor circuits
- Conveyor and material handling systems
Compatibility & Replacements
Compatible With
- Bulletin 500 Line motor starters and overload relay assemblies
- NEMA Size 0, 1, 2, and 3 motor starter frames
- Standard three-phase AC motor circuits (general industrial duty)
- Manual and automatic motor control applications
Replaces / Drop-In Replacement For
- Interchangeable with other Type W eutectic alloy heater elements rated for the same full-load amperage class
- Direct replacement for existing W63 elements in Bulletin 500 assemblies
- OEM part for original equipment maintenance and repair
Works With
- Bulletin 500 Line Starters (Rockwell Automation)
- Standard NEMA overload relay packages
- Class 20 thermal trip rated motor control systems
- Manual and magnetic motor starters
