Mersen 60A Class H/K Adder Box Fuse Block, 250VAC/250VDC

Mersen 60A Class H/K Adder Box Fuse Block, 250VAC/250VDC

The Mersen 60A Class H/K Adder Box Fuse Block is engineered to accommodate Class H and K power fuses rated 250VAC/250VDC, with a snap-on adder design that lets it attach to 1-, 2-, or 3-pole blocks to build multipole segmented assemblies of virtually any pole count. Insulating components are molded from glass-filled polycarbonate, and the block carries a 50 kA short circuit current rating (SCCR) for demanding industrial and commercial power distribution. Fuse clips are made of high-conductivity tinplated copper for dependable, low-resistance connections.

Key Features

• Amperage Rating: 60A maximum fuse rating for reliable overcurrent protection.
• Voltage Rating: Rated 250VAC/250VDC (AC/DC) at 50/60 Hz for versatile power applications.
• Fuse Class: Accepts Class H/K power fuses via a clip-in installation method.
• Adder Box Configuration: Snaps onto 1-, 2-, or 3-pole blocks to form multipole segmented fuse block assemblies.
• Short Circuit Current Rating: 50 kA SCCR supports demanding fault-current environments.
• Durable Construction: Body and insulating material is glass-filled polycarbonate with high dielectric strength.
• Mounting: Direct screw mount installation with a 45 lb-in torque rating for secure, code-compliant termination.
• High-Conductivity Clips: Tinplated copper fuse clips ensure consistent, low-resistance contact.

Certifications & Compliance

• RoHS Compliant

Technical Specifications

• Number of Poles: Adder
• Fuse Type/Class: Class H/K
• Short Circuit Current Rating (SCCR): 50 kA
• Installation Mounting: Direct Screw Mount
• Max Fuse Rating: 60 A
• Torque Rating: 45 lb-in
• Ampere Rating: 60 A
• ROHS Compliant: Yes
• Frequency (Hz): 50/60 Hz
• AC or DC: AC/DC
• Fuse Installation Method: Clip-in
• Body/Insulating Material: Glass Filled Polycarbonate
• Packaging: 10 EA

Typical Applications

• Commercial and Industrial Power Distribution Panels
• Motor Control Centers and Switchboards
• Multipole Segmented Fuse Block Assemblies
• Class H/K Fused Disconnect and Protection Systems
• Panelboard and Load Center Overcurrent Protection

Why Mersen?

Mersen builds its Class H/K adder box fuse blocks with glass-filled polycarbonate insulators for verified dielectric strength, high-conductivity tinplated copper clips, and a 50 kA SCCR to deliver dependable, code-compliant overcurrent protection. The snap-on adder design gives electrical professionals a flexible way to configure multipole fuse block assemblies without sacrificing build quality or reliability.