Overview
The Allen-Bradley W60 overload relay heater is a precision-engineered thermal protection component manufactured by Rockwell Automation for NEMA-compliant motor control systems. This eutectic alloy Type W heater element is used with Bulletin 500 Line starters and provides Class 20 operation, making it ideal for general-purpose industrial applications requiring reliable motor overload protection.
Key Features
- Current rating of 19.4–25 Amps
- Type W eutectic alloy construction with Class 20 protection
- Compatible with thermal overload relays, magnetic motor starters, and motor controls
- Manual reset design
- Compact, drop-in replacement design
Technical Specifications
The W60 heater element offers multiple amperage ratings depending on starter size. Specifications include 20.5 Amps at Size 00–0, 20.9 Amps at Size 1, and 21.1 Amps at Size 2. The lightweight construction (0.04 lb) ensures easy installation and minimal integration impact in confined control panel spaces.
Typical Applications
The W60 provides reliable motor protection in Bulletin 509 starters, 592 overload relays, and similar NEMA-style applications. Common uses include machine tool motor protection, pump and compressor motor circuits, conveyor systems, and general industrial motor starter protection where full-load amperage falls within the W60 range.
Compatibility & Replacements
Compatible With
- Allen-Bradley / Rockwell Automation Bulletin 500 motor starters
- Allen-Bradley Bulletin 509 starters
- Rockwell Automation 592 overload relays
- NEMA-style eutectic alloy thermal overload relay bases
- Manual overload relay units with Type W heater socket
Replaces / Drop-In Replacement For
Verify with your system integrator before ordering to confirm the W60 matches your specific Bulletin 500 or 509 starter model and motor full-load amperage requirements. Original heater elements in equivalent W-series sizes may be directly replaced with the W60.
Works With
- Rockwell Automation Studio 5000 (for SoC-integrated starters)
- Manual NEMA-rated starter control circuits
- Electromechanical relay-based motor control systems
- Hardwired three-phase induction motor protection circuits
