Weil McLain 383-500-205 Switch

The Weil McLain 383-500-205 Switch is a high-reliability HVAC replacement rocker switch engineered specifically for service within Ultra Gas Boilers and Ultra Commercial Boilers. This SPST on-off power switch is a critical component in maintaining the operational integrity of the primary control circuit. Rated for 16A @ 125V, it provides the robust electrical capacity required for heavy-duty cycling in professional hydronic heating environments. As a genuine boiler control switch, it ensures precise fitment and restores the manual override function to factory specifications.

For technicians performing field repairs, this rocker switch 16A 125V features a high-impact plastic housing designed for standard panel cut-outs, facilitating rapid swap-outs during routine maintenance or emergency service. This Weil McLain OEM part is the direct replacement for standard Ultra Series 2 and newer control assemblies, offering a lower failure rate compared to generic alternatives.

Key Benefits

• Direct OEM Compatibility: Specifically designed for the Weil McLain Ultra Series, ensuring seamless integration with existing high-voltage harnesses.
• Industrial-Grade Ratings: Heavily rated at 16A 125V to handle inductive loads without premature contact pitting.
• Snap-In Installation: Standardized dimensions allow for immediate mechanical fitment into the swing-away control panel without modification.
• Durable Rocker Action: Positive tactile feedback ensures clear on-off power switch status for simplified troubleshooting and safe boiler servicing.

Common Questions

Is the Weil McLain 383-500-205 switch compatible with Ultra Series 2 boilers?
Yes, this switch is the standard power control component for Ultra Series 2, Series 3, and Ultra Commercial units. Always verify your specific model and serial number against the 383-500-205 part number in the manual.

Can I use a generic 16A rocker switch instead of the OEM version?
While generic switches may match the 16A 125V rating, only the genuine Weil McLain 383-500-205 ensures the correct physical dimensions and terminal spacing required for the factory control module housing and safety clearances.

Does this kit include the wiring harness?
The 383-500-205 is primarily the rocker switch unit itself. If your diagnostic indicates heat damage at the terminals, inspect the high-voltage wire harness assembly separately, as those are often sold as individual service items.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.