Mersen Class R Fuse Block Adder Box, Reinforced Clip, 250VAC/250VDC

Mersen Class R Fuse Block Adder Box, Reinforced Clip, 250VAC/250VDC

The Mersen Class R Fuse Block Adder Box is engineered to accommodate Class R 250 and 600V power fuses within Mersen's broader Class H, K and R fuse block platform. Rated 250VAC/250VDC at 50/60 Hz for AC/DC applications, this adder box snaps onto 1-, 2- or 3-pole blocks to build multipole segmented fuse block assemblies of as many poles as required. It carries a 200 kA short circuit current rating (SCCR) and features spring reinforced, high conductivity tinplated copper fuse clips for dependable, low-resistance connections in demanding power distribution applications.

Key Features

• Fuse Class: Designed for Class R power fuses, part of the Class H, K and R fuse block family.
• Adder Block Configuration: Snaps onto 1-, 2- or 3-pole fuse blocks to form multipole segmented blocks for flexible panel layouts.
• Reinforced Clip: Spring reinforced, high conductivity tinplated copper clips deliver reliable, low-resistance fuse contact.
• Voltage Rating: 250VAC/250VDC at 50/60 Hz for AC or DC power distribution circuits.
• Short Circuit Current Rating: 200 kA SCCR for demanding fault-current environments.
• Durable Construction: Glass Filled Polycarbonate insulating body with verified dielectric strength in excess of 2500V.
• Fuse Installation: Clip-in installation method for quick, secure fuse mounting and replacement.

Certifications & Compliance

• RoHS Compliant

Technical Specifications

• ROHS Compliant: Yes
• Number of Poles: Adder
• Fuse Type/Class: Class R
• Short Circuit Current Rating (SCCR): 200 kA
• Frequency: 50/60 Hz
• AC or DC: AC/DC
• Fuse Installation Method: Clip-in
• Body/Insulating Material: Glass Filled Polycarbonate
• Packaging: 10 EA

Typical Applications

• Industrial and Commercial Power Distribution
• Panelboard and Switchboard Fuse Mounting
• Motor Control and Overcurrent Protection Circuits
• Segmented Multipole Fuse Block Assemblies
• Renovation and New Construction Electrical Systems

Why Mersen?

Mersen fuse blocks pair high conductivity tinplated copper clips with a glass-filled polycarbonate body verified to dielectric strengths above 2500V, giving installers a dependable platform for Class R fuse protection. With a 200 kA SCCR and spring reinforced clip construction, this adder box helps deliver code-compliant, fault-tolerant performance for professional electrical work.