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W79 | Allen-Bradley 111A Type W Heater Element for 500 Line Overload Relay Protection
- Regular price
- $32.00
- Sale price
- $32.00
- Regular price
-
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Product Description P/N: W79
Description
The Allen-Bradley W79 is a Type W heater element designed to provide Class 20 overload protection for motors controlled by 500 Line starters. Rated for 111 amps, this heater element delivers accurate thermal response to safeguard motors under standard operating conditions. The W79 enables reliable overload relay performance in general-purpose industrial applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Contactors & Starters |
| Part Number | W79 |
| Subcategory | Thermal Overload/Heater |
| Family | W Series |
| Type | W |
| Full Load Amps (Min) | 111 A |
| Full Load Amps (Max) | 111 A |
| Ambient Temperature at Controller (°C) | 40 °C |
| Ambient Temperature at Controller (°F) | 104 °F |
| Ambient Temperature at Motor (°C) | 40 °C |
| Ambient Temperature at Motor (°F) | 104 °F |
| Overload Class | Class 20 Protection, Type W |
| Application | 500 Line motor starters and overload relays |
| Protection Type | Thermal overload |
Information About W79
The W79 is part of Allen-Bradley’s W Series, a line of heater elements engineered for compatibility with 500 Line overload relays. Its 111-amp full-load rating supports heavy-duty motor applications while maintaining consistent operation at ambient temperatures up to 40°C (104°F). Designed to deliver Class 20 protection, the W79 limits motor exposure to damaging currents by tripping within the appropriate time window under overload or locked-rotor conditions. As a Type W heater, it integrates seamlessly with Allen-Bradley relay assemblies, ensuring dependable and predictable thermal protection.
Key Features:
- Type W heater element: Designed for Allen-Bradley 500 Line overload relay systems.
- 111A full-load rating: Suitable for heavy-duty motor protection requirements.
- Class 20 protection: Trips within the required time frame for standard industrial applications.
- 40°C ambient operation: Rated for both controller and motor environments.
- Accurate thermal response: Ensures proper overload sensing and relay activation.
- Compatible with general-purpose motor applications: Supports reliable operation across diverse industrial settings.
The W79 delivers the reliability and precision required for thermal overload protection in demanding motor control systems.
Description
The Allen-Bradley W79 is a Type W heater element designed to provide Class 20 overload protection for motors controlled by 500 Line starters. Rated for 111 amps, this heater element delivers accurate thermal response to safeguard motors under standard operating conditions. The W79 enables reliable overload relay performance in general-purpose industrial applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Contactors & Starters |
| Part Number | W79 |
| Subcategory | Thermal Overload/Heater |
| Family | W Series |
| Type | W |
| Full Load Amps (Min) | 111 A |
| Full Load Amps (Max) | 111 A |
| Ambient Temperature at Controller (°C) | 40 °C |
| Ambient Temperature at Controller (°F) | 104 °F |
| Ambient Temperature at Motor (°C) | 40 °C |
| Ambient Temperature at Motor (°F) | 104 °F |
| Overload Class | Class 20 Protection, Type W |
| Application | 500 Line motor starters and overload relays |
| Protection Type | Thermal overload |
Information About W79
The W79 is part of Allen-Bradley’s W Series, a line of heater elements engineered for compatibility with 500 Line overload relays. Its 111-amp full-load rating supports heavy-duty motor applications while maintaining consistent operation at ambient temperatures up to 40°C (104°F). Designed to deliver Class 20 protection, the W79 limits motor exposure to damaging currents by tripping within the appropriate time window under overload or locked-rotor conditions. As a Type W heater, it integrates seamlessly with Allen-Bradley relay assemblies, ensuring dependable and predictable thermal protection.
Key Features:
- Type W heater element: Designed for Allen-Bradley 500 Line overload relay systems.
- 111A full-load rating: Suitable for heavy-duty motor protection requirements.
- Class 20 protection: Trips within the required time frame for standard industrial applications.
- 40°C ambient operation: Rated for both controller and motor environments.
- Accurate thermal response: Ensures proper overload sensing and relay activation.
- Compatible with general-purpose motor applications: Supports reliable operation across diverse industrial settings.
The W79 delivers the reliability and precision required for thermal overload protection in demanding motor control systems.