Overview
The Allen-Bradley W30 thermal overload heater element is a eutectic alloy-type protection device designed for use in Bulletin 500 Line starters and motor control systems. This heater element provides Class 20 thermal trip protection and is manufactured by Rockwell Automation to deliver reliable overload safeguarding for industrial motors and electrical equipment. The W30 is a manual reset element suitable for general applications requiring standard overload protection.
Key Features
- Eutectic Alloy Construction: Type W heater elements provide Class 20 operation and are recommended for General Applications
- Manual Reset Design: Operator must manually reset the overload after a trip event for controlled equipment restart
- Class 20 Trip Rating: A Class 20 overload relay will trip in 20 seconds or less at a current equal to 600 percent of its rating
- Bulletin 500 Compatible: Fits all Bulletin 500 Line starters and associated motor control hardware
- Industrial-Grade Reliability: Authentic Rockwell Automation component meeting NEMA standards
Technical Specifications
- Trip Class: 20 (per NEMA ICS 2-222)
- Element Type: Type W Heater Element
- Reset Type: Manual
- Construction: Eutectic Alloy Overload Relay
- Application: Bulletin 500 Line Starters (Sizes 00, 0, 1)
- Standard: KC (Rockwell Automation standard designation)
- Typical FLA Range: 1.17–1.39 amps (varies by size)
- UPC Code: 781180153624
Typical Applications
The Allen-Bradley W30 heater element protects motors and electrical equipment in a wide range of industrial environments:
- General purpose AC motor control and pump protection
- HVAC systems and air handling units
- Conveyors and material handling equipment
- Machine tools and industrial automation systems
- Water treatment and industrial pumping stations
- Standard duty cycle motors with moderate acceleration requirements
Compatibility & Replacements
Compatible With
- Allen-Bradley Bulletin 500 Line magnetic starters (all sizes)
- Thermal overload relay units designed for Type W heater elements
- Standard NEMA motor control circuits
- 3-phase and single-phase motor protection systems
Replaces / Drop-In Replacement For
The W30 is the standard Type W heater element for Bulletin 500 applications. Verify exact model compatibility with your specific Bulletin 500 starter size (00, 0, or 1) and current rating before ordering. Consult your equipment documentation or system integrator for compatibility confirmation.
Works With
- Rockwell Automation Bulletin 500 starters and control devices
- NEMA-standard thermal overload relay assemblies
- Manual and magnetic motor control systems
- Eutectic alloy-based overload protection circuits
