SIS Switchboard

(Showing 24 of 52)

SIS switchboard wire is built for reliable performance in control panels, switchboards, and electrical equipment operating in dry environments. It features stranded copper conductors with cross-linked polyethylene (XLPE) insulation that delivers excellent heat resistance and electrical strength.

Rated for 600 volts, this wire meets UL 3173 requirements and passes the VW-1 flame test for sizes 14 AWG and larger. Its compact size and flexibility make installation easier, especially in dense panel wiring or confined enclosures. SIS wire is a dependable choice for internal power and control wiring where clean, organized connections and long-term reliability are critical.

Show 12 24 36 48

Your Cart

Your Cart Is Empty.

Total Items: Subtotal:$0.00 Grand total:$0.00

View Cart

Your cart subtotal must be at least $200 before you can place an order. Please increase your order by $200.00.

FAQs

SIS wire is made for internal wiring in panels, switchboards, and control cabinets. It’s rated 600V, heat-resistant, and easy to route in tight spaces thanks to its small size and flexible build.

No. SIS is designed for dry, indoor use only. For outdoor or damp environments, choose a tray-rated or THHN/THWN wire instead.

SIS has XLPE insulation and is built specifically for switchboard and panel wiring. THHN is more general-purpose and can be used in conduit and wet locations. Both are 600V, but they serve different applications.

Yes. All sizes 14 AWG and larger meet the VW-1 flame test and UL 44, so it holds up under heat and electrical load in enclosed equipment.

Not all options are listed online. Pro Wire & Cable can often locate additional colors, sizes, or stranded builds—just send a request via chat or the Contact Us page and we’ll check stock across partner warehouses.