Mersen A2D-R Amp-Trap 2000 Class RK1 Time-Delay Fuse

Mersen A2D-R Amp-Trap 2000 Class RK1 Time-Delay Fuse

The Mersen A2D-R Amp-Trap 2000® is a Class RK1 time-delay fuse rated 250VAC / 250VDC, engineered to deliver IEC Type 2 "no damage" protection to mains, feeders, and branch circuits serving both motor and non-motor loads. Featuring Mersen's SmartSpot® visual indication system, this fuse opens fast under extreme fault conditions for maximum short-circuit protection while still providing the time-delay characteristic needed to ride through motor and transformer inrush current. It is built as a direct upgrade path for facilities still running older 250V Class H, K, or RK5 fuses, combining a rugged PolyTube body with tin-plated copper connection terminals for long-term reliability.

Key Features

• Fuse Class: Class RK1 construction for reliable, code-compliant short-circuit and overload protection.
• Time-Delay Characteristic: Speed/characteristic rated Time Delay to withstand motor and transformer inrush current without nuisance opening.
• Dual Voltage Rating: UL-rated 250V AC and 250V DC for use on both AC and DC circuits.
• SmartSpot® Indication: Built-in blown-fuse indication system simplifies troubleshooting and reduces downtime.
• High Interrupting Rating: 200 kA AC maximum interrupt rating / breaking capacity (I1) for demanding fault-current environments.
• Durable Construction: PolyTube body/insulating material paired with tin-plated copper connection/terminal material for long-term reliability.
• Mounting: Clip-mount design for straightforward installation into standard fuse clips.
• Frequency Rating: Rated for 50/60 Hz electrical systems.

Certifications & Compliance

• RoHS Compliant

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Protection of Existing Mains, Feeders, and Branch Circuits
• Motor and Non-Motor Load Circuit Protection
• Replacement for Older 250V Class H, K, or RK5 Fuses
• Industrial and Commercial Electrical Panels
• Motor Starter and Switch Circuit Protection

Why Mersen?

Mersen's Amp-Trap 2000® A2D-R Class RK1 fuse combines a rugged PolyTube body, tin-plated copper terminals, and a 200 kA interrupt rating with SmartSpot® visual indication for fast fault diagnosis. Built to IEC Type 2 "no damage" performance standards and RoHS compliant, it gives electrical professionals a dependable, code-compliant upgrade path from legacy Class H, K, and RK5 fuses without compromising motor inrush time-delay performance. Choose Mersen for consistent, code-compliant protection across mains, feeders, and branch circuits in demanding industrial and commercial environments.