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Circuit Breaker Mounting Hardware

RESA Power stocks hardware kits for hundreds of different breaker / panel combinations. To find the correct kit use our product selector below or contact our sales team.

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Common Panel Manufacturers

  • Eaton / Cutler Hammer
  • General Electric
  • American / Federal Pacific
  • Square D
  • Siemens / ITE
  • Westinghouse
  • Zinsco
  • Sylvania
  • Industrial Electric Mfg (IEM)

What is mounting hardware?

In order to mount molded case circuit breakers into most panelboards a hardware kit, sometimes known as a “link kit” or “finger kit”, is required. The hardware kit makes the electrical connection between the circuit breaker and the vertical bus. Most hardware kits include everything that is needed to mount the circuit breaker safely into the specified panel including brackets to secure the circuit breaker and device plates to cover the live components once installed.

Finding a custom solution

Need hardware for a custom application or smaller regional panel manufacturer? We can help! RESA Power has provided hundreds of custom fabricated hardware kits for specialized applications and many of these kits can be completed within days, not weeks. Contact us with your panel information to get started.

I-Line Panelboards


While most panelboards and switchboards require hardware there are some designs which do not. One popular such design is Square D’s series of I-Line panelboards. These panelboards use a “plug-in” design for branch devices rated up to 1200A and 600V.

This unique design has been installed in facilities across the county for decades and has some great benefits including ease of installation and backwards compatibility across multiple vintages and generations making it simple to bring new technology to a dated panel.

Contact us today to find the right circuit breaker for your Square D I-Line panelboard!