Overview
The Allen-Bradley W62 overload heater element is a NEMA-compliant Type W eutectic alloy heater designed for protecting three-phase motors in industrial automation and control applications. This component is specifically engineered for use with Bulletin 500 line magnetic motor starters, contactors, and thermal overload relays. With Class 20 trip characteristics and current ratings from 23.3 to 30 amperes, the W62 delivers dependable motor protection across multiple starter sizes.
Key Features
- Type W Eutectic Alloy Design: Precision-crafted thermal sensor element for accurate overcurrent detection and motor protection
- NEMA Class 20 Protection: Industry-standard trip classification for general industrial motor applications
- Multi-Size Compatibility: Available configurations for Bulletin 500 starter sizes 00-0 (24.3A), 1 (25.0A), 2 (25.7A), and 3 (27.5A)
- Manual Reset: Allows controlled motor restart after overload trip event, reducing unintended restarts
- Proven Reliability: Manufactured by Rockwell Automation to strict NEMA specifications for drop-in replacement applications
Technical Specifications
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Part Number: W62
- Product Type: Overload Heater Element
- Heater Series: Type W
- Current Rating: 23.3–30 amperes (size dependent)
- Trip Class: 20 (NEMA standard)
- Overload Relay Type: Eutectic Alloy
- Reset Type: Manual
- Applicable Starters: Bulletin 500 Line
- Weight: 0.04 lb per unit
Typical Applications
- Three-phase AC induction motor protection in manufacturing equipment
- Thermal overload relay replacement in magnetic motor starters
- General-purpose motor control circuits requiring NEMA Class 20 protection
- Industrial pump, fan, and compressor motor circuits
- Machine tool and production line motor starter systems
- Preventive maintenance and starter upgrade projects
Compatibility & Replacements
Compatible With
- Allen-Bradley Bulletin 500 Line magnetic motor starters (sizes 00-0, 1, 2, 3)
- Bulletin 500 thermal overload relays
- NEMA-compliant motor starter contactors and control circuits
- Three-phase AC induction motor systems (standard industrial voltages)
- Manual and automatic motor control applications
Replaces / Drop-In Replacement For
- Original Allen-Bradley W62 heater elements in existing Bulletin 500 starters
- Type W overload relay heater elements requiring Class 20 protection on compatible sizes
- Verify size and amperage rating (00-0, 1, 2, or 3) matches your existing relay or starter before ordering
Works With
- Allen-Bradley Bulletin 500 control systems and motor starter architectures
- Standard NEMA thermal overload relay mounting and terminal configurations
- Eutectic alloy overload relay platforms requiring Type W heater elements
- Manual and semiautomatic motor control circuits compliant with NEMA standards
