Industrial-Grade Heating Control for Critical Applications
When precision heating meets industrial durability, the Duraline P114601-HP Mini Strip Heater Percentage Control Panel delivers. Engineered by J.B. Nottingham Co.’s DuraLine division and manufactured in the USA, this robust control panel is purpose-built for demanding pre-heat, post-heat, and stress-relief applications across welding, fabrication, and heavy industrial environments.
Powerhouse Performance in a Portable Package
Despite its “mini” designation, this control panel packs serious heating capability. Supporting input voltages up to 480 VAC in 3-phase, 3-pole, 4-wire configuration, it delivers impressive total power output:
- At 440V (3-phase): Approximately 76,000W total (19,000W per outlet) at 25A per outlet
- At 460V: Approximately 79,000W total (19,750W per outlet) at 25A
- At 480V: Approximately 83,000W total (20,750W per outlet) at 25A
This high-output capacity means the panel can support up to approximately 80 × 1kW heaters in specific configurations, making it possible to handle large-scale heating requirements with a single control unit, reducing system complexity and installation costs.
The panel features four Duraline 4RJ20 3-pole, 4-wire receptacles with snap-back covers for quick, safe connections to multiple heater circuits. At approximately 26 × 16 × 15 inches and weighing around 80 pounds, it strikes an ideal balance between portability and industrial-grade construction.
The Percentage Timer Advantage
What truly sets the P114601-HP apart is its integrated percentage timer control of the mini strip heater. Rather than simple on/off switching or thermostat-based control, the percentage timer delivers precise regulation by controlling the ratio of “on” time to “off” time in each heating cycle.
This capability is critical in applications where temperature gradients and cooling rates must be carefully managed. In welding operations, for example, this controlled heating approach helps:
- Prevent thermal shock and cracking in thick steel sections
- Maintain uniform temperature distribution across large workpieces
- Achieve consistent stress relief without overshooting target temperatures
- Reduce energy consumption compared to continuous full-power operation
The result is more predictable, repeatable heating outcomes—essential for quality assurance in critical fabrication work.
Built for the Toughest Industrial Environments
The P114601-HP is designed to withstand the rigors of industrial field and shop environments:
- Rugged electrical resistance heating controller construction
- High-output capability for demanding applications
- Industrial-grade enclosure to protect internal components
- Snap-back receptacle covers for safe, weather-resistant connections
These features make it equally at home on a remote pipeline construction site or in a busy fabrication shop.
Real-World Applications
The DuraLine P114601-HP excels in scenarios requiring controlled, high-power heating:
Pipeline Welding
Pre-heating and post-heating are critical to preventing cracking in pipeline welds, especially in cold weather conditions or with high-carbon steels. The percentage timer allows precise control of interpass and post-weld heat treatment temperatures.
Heavy Equipment & Ship Building
When welding thick steel sections in heavy equipment or marine vessel construction, slow and precise heat application is essential. The high power output supports heating large areas while the percentage timer prevents localized overheating.
Power Plants & Refineries
These facilities often require portable heat control systems for maintenance, repairs, and new construction. The panel’s robust design and high capacity make it ideal for stress-relief heat treatment of pressure vessel welds and other critical components.
Important Considerations
Before deploying the P114601-HP in your operation, keep these factors in mind:
Power Infrastructure: Your facility must have compatible 3-phase power up to 480V. Verify your electrical service capacity can support the panel’s maximum output.
Configuration Verification: The actual number of heaters and wattage distribution depends on your specific application. Consult with DuraLine to optimize the configuration for your needs.
Safety Compliance: Use only appropriately rated heaters and cabling. Follow all grounding, isolation, and electrical safety protocols for high-voltage, high-current applications.
Made-to-Order Availability: The P114601-HP is manufactured on a made-to-order basis, so plan lead times accordingly when scheduling projects.
Installation Support: Depending on your existing setup, you may need additional accessories, installation services, or commissioning support to integrate the panel into your operation.
The Bottom Line
The Duraline P114601-HP Mini Strip Heater Percentage Control Panel represents a significant capability upgrade for operations requiring controlled, high-power heating. Its combination of high output, precise percentage timer control, and rugged construction makes it an invaluable tool for quality-critical welding and fabrication applications.
By delivering more uniform heating with better control than simple on/off systems, it helps ensure consistent results in applications where thermal management directly impacts structural integrity and product quality. For organizations engaged in pipeline construction, heavy fabrication, or industrial maintenance, this American-made control panel offers a professional-grade solution to demanding heating challenges.