Mersen OTS-15 Amp-Trap Class K5 Fast-Acting Fuse, 600VAC/300VDC

Mersen OTS-15 Amp-Trap® Class K5 Fast-Acting Fuse, 600VAC/300VDC

The Mersen OTS-15 Amp-Trap® is a Class K5, fast-acting One-Time (OTS) general purpose fuse engineered for low-cost, reliable protection of feeder and branch-circuits serving lighting, heating, and other non-motor loads. Rated 600VAC and 300VDC with an AC Max Interrupting Rating of 50 kA, this fuse safely interrupts available short-circuit currents up to 50,000 amperes. This listing covers the OTS-15 family, available with a choice of Blade or Ferrule connection to match your specific fuse holder or disconnect configuration — select the connection type needed at checkout. Note that OTS fuses are not rejection-style fuses, so any replacement fuse should never carry a lower interrupting rating than the original unit being replaced.

Key Features

• Fuse Class: Class K5 construction for general-purpose branch and feeder-circuit protection.
• Speed/Characteristic: Fast-Acting response provides rapid interruption of overcurrent conditions to protect downstream equipment and conductors.
• Dual AC/DC Rating: Rated 600V AC and 300V DC (UL), giving flexibility for use across both AC and DC circuit applications.
• Interrupting Capacity: 50 kA AC Max I.R./Breaking Capacity delivers safe interruption of high short-circuit currents within its rating range.
• Connection Options: Available in Blade or Ferrule terminations to fit standard fuse holder and disconnect hardware — choose the connection style that matches your equipment.
• Frequency: Rated for 50/60 Hz electrical systems, suitable for standard commercial and industrial power frequencies.
• Packaging: Supplied 10 EA per package, convenient for maintenance stock or multi-fuse panel installations.

Certifications & Compliance

• RoHS Compliant

Technical Specifications

• ROHS Compliant: Yes
• Fuse Class: Class K5
• Speed/Characteristic: Fast-Acting
• Rated Voltage AC (UL): 600V
• Rated Voltage DC (UL): 300V
• AC Max I.R./Breaking Capacity: 50 kA
• Connection Type: Blade or Ferrule (select at checkout)
• Frequency: 50/60 Hz

Typical Applications

• Feeder and Branch-Circuit Overcurrent Protection
• Lighting and Heating Circuit Protection
• Non-Motor Load Circuits
• Commercial and Industrial Electrical Panels
• Fuse Replacement and Maintenance Stock
• AC and DC Circuit Applications up to 600VAC/300VDC

Why Mersen?

Mersen's OTS-15 Amp-Trap® Class K5 fuses combine fast-acting protection with a 50 kA interrupting rating and dual 600VAC/300VDC ratings, giving electrical professionals dependable, code-compliant overcurrent protection for general-purpose feeder and branch-circuit applications. Offered in Blade or Ferrule connection styles, the OTS-15 series adapts to a wide range of fuse holders and disconnect hardware while maintaining consistent, repeatable performance. The RoHS-compliant construction further supports responsible sourcing for panel and disconnect installations. Always match replacement fuse interrupting ratings to the original device to maintain system protection integrity.