• OEM part ensures warranty / agency compliance and best performance
Shipping: Usually Ships in 10-14 Business Days

Customer questions about this product

Is this an OEM part?
Yes. This is an OEM (Original Equipment Manufacturer) part.
What is the difference between an OEM part and an OEM-equivalent part?
An OEM part is the original component that was made for your equipment.

We also sell parts that are equivalent to OEM products, but are not genuine OEM. Each type has its own merits – these are some things to consider when making the decision between OEM and OEM-equivalent parts:

• Using an OEM part guarantees that you will comply with any valid manufacturer’s warranties and agency approvals on your product. An OEM-equivalent part may or may not offer the same guarantees.

• OEM-equivalent parts are built to the same specifications as the original part and are often available at a lower price point. In some cases it may even be sourced from the same location as the OEM part, though this will vary from item to item.
Can the utility type or production date of my equipment affect whether or not this part fits?
Sometimes, but not always, factors like the voltage, fuel type, and serial number may determine whether or not a particular part will fit your particular unit. We do our best to provide the most up to date information possible on our site but we cannot guarantee that this will clarify every possible scenario. If you need additional confirmation that this part is the correct one for your unit, we recommend consulting product literature for your equipment to identify the correct part.
Ask your own question!


Duke 5578-2 Infinite Switch 208v.

Overall Dimensions:
Length: 1.97"
Width: 1.76"
Height: 1.2"

Because this item is not stocked in our warehouse, processing, transit times and stock availability will vary. If you need your items by a certain date, please contact us prior to placing your order. Expedited shipping availability may vary. We cannot guarantee that this item can be cancelled off of the order or returned once it is placed.

Attention CA Residents: Prop 65 Warning


Warranty Info

This item is subject to a 90 day parts warranty. All warranty claims are subject to manufacturer discretion.

Compatible Models

Duke 302
Duke 302-25PG/SS
Delfield 305
Duke 305-25PG/SS
Duke ADI2E
Duke ADI3E
Duke ADI5E
Duke ASI1E
Duke ASI2E
Duke ASI3E
Duke ASI4E
Duke ASI5E
Duke DPAH 2-HF/4HF
Duke E 302SW
Duke E 303SW
Duke E 304SW
Duke E 305SW
Duke E302
Duke E303
Duke E304
Duke E305
Duke G-2 CBPG SS
Duke G-2 DLPG SS
Duke G-6 CBPG SS
Duke G-6 DLPG SS
Duke HB-2HF
Duke HB-3HF
Duke HB-4HF
Duke HB-5HF
Duke OPAH2
Duke OPAH3
Duke OPAH4
Duke WB-302
Duke WB-304
Duke WB-305
Duke ADI1E
Duke ADI4E
Duke HB2HF
Duke HB3HF
Duke HB4HF
Duke HB5HF
Duke SUB-HF-25
Duke SUB-HF-37

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