Overview
The Allen-Bradley W65 is a replacement heater element for thermal overload relays used in motor control circuits. This eutectic alloy element provides Class 20 trip characteristics and is compatible with Allen-Bradley Bulletin 500 line starters and magnetic motor control assemblies. The W65 delivers reliable motor overload protection for industrial automation and general-purpose motor applications.
Key Features
- Eutectic alloy thermal sensing technology for consistent trip response
- Class 20 protection—trips at 600% rated current within 20 seconds
- Type W heater element for standard motor overload applications
- Manual reset operation for safety-critical control circuits
- Drop-in replacement for existing Bulletin 500 overload relays
Technical Specifications
- Current Rating: 31–39.5 Amps (varies by motor starter size)
- Trip Class: 20
- Element Type: Type W, Eutectic Alloy
- Reset Type: Manual
- Applicable Sizes: Size 0 (32.5A), Size 1 (32.0A), Size 2 (33.0A), Size 3 (36.5A)
- Applicable Bulletin: Bulletin 500 Line Starters
- Weight: 0.05 lbs
- Operating Standard: NEMA ICS 2-222
Typical Applications
- Motor overload protection in AC induction motor circuits
- Thermal backup for magnetic motor starters
- Industrial machinery and equipment motor control
- General industrial automation and control systems
- OEM and retrofit motor starter assemblies
Compatibility & Replacements
Compatible With
- Allen-Bradley Bulletin 500 line motor starters
- Thermal overload relay assemblies with Type W element housings
- NEMA-rated magnetic motor starter enclosures
- Manual and electromagnetic motor control circuits
Replaces / Drop-In Replacement For
- Earlier Allen-Bradley W65 overload heater elements
- OEM replacement element in Bulletin 500 overload relays
Works With
- Bulletin 512 motor starters
- Bulletin 509 reversing starter assemblies
- Allen-Bradley size 0, 1, 2, and 3 motor starters
- Standard NEMA motor control equipment
