Mersen: Class J Critical Power Panelboard
September 15, 2026
Mersen is excited to announce the latest addition to its portfolio of fully customizable fused panelboards.
Mersen’s Class J Critical Power Panel (CPP) series panelboard is designed with critical power applications in mind. Mersen’s CPP offers installers quicker specification and easier installation, while offering customers a lower cost option. This lightweight panelboard, in a smaller footprint, and with in-house sourced components, translates into better design control and improved availability.
This UL 67 panelboard has multiple options for switched fused mains, up to 400A, featuring Mersen’s UL 98 rated Compact Fused Disconnect (CEP) and Amp-Trap 2000 Class J fuses for branch circuit protection. Fuses can be changed for the application to offer more time delay or faster protection based on the application. The panel, main, and branch circuits can be applied up to 600VAC or 125VDC. These benefits lead to a panelboard that is easy to apply, install, and maintain while serving your most important electrical loads.
Ideally suited for National Electrical Code (NEC) required and non-required applications such as:
- UPS Systems
- Data Centers
- Medium Voltage eHouses
- Emergency Circuits (required by NEC 700.27)
- Legally Required Standby Systems (required by NEC 701.18)
- Lighting loads or any load up to 30A
- DC applications for utility and railway markets
Features and Options:
- Integral Surge Protection (required on critical circuits)
- Feed Through Lugs
- Standard Dual/Sub Feed Lugs on MLO Mains
- Preconfigured options available
- Patented “Z” Bus Bar
Additional Benefits:
- Few connection points to minimize electrical/mechanical points of failure
- Robust steel back plate
- High interrupting rating – up to 200kA with up to a 400A fuse (main or remote)
- Easy selective coordination using Mersen Amp-Trap 2000® fuses or any other Class J fuses for branch circuit protection
The Class J Critical Power Panel joins Mersen’s Class CC Critical Power for a complete offering to suit many needs.
