Mersen Amp-Trap® A2K Series Fast-Acting Class RK1 Fuse, 250V

Mersen Amp-Trap® A2K Series Fast-Acting Class RK1 Fuse, 250V

The Mersen Amp-Trap® A2K Series is a current-limiting Class RK1 fuse engineered for branch/feeder circuits and back-up protection where high available short-circuit currents exist. Rated 250V AC/DC with a fast-acting speed characteristic and an AC maximum interrupting rating of 200 kA, this rejection-style fuse mounts via clip with ferrule-type, tin-plated copper terminals. Its fiberglass (GMG) body delivers dimensional stability in harsh industrial environments, and the design is UL Listed and CSA Certified for demanding commercial and industrial power distribution applications.

Key Features

• Ampere Rating: 1 A for precise overcurrent protection in low-amperage branch and feeder circuits.
• Rejection-Style Design: Prevents replacement by other fuse classes, preserving system coordination and safety.
• High Current Limitation: Delivers low peak let-through current for excellent protection against high available short-circuit currents.
• Durable Construction: Fiberglass (GMG) body provides dimensional stability in harsh industrial environments.
• Connection/Terminal Type: Ferrule terminals with tin-plated copper construction for reliable, corrosion-resistant connections.
• Mounting: Clip-mount configuration for straightforward installation and replacement.
• Easy-to-Read Imprint Label: Speeds recognition and replacement in the field.
• AC Max Interrupting Rating: 200 kA for dependable performance under high fault-current conditions.

Certifications & Compliance

• UL Listed to standard 248-12, File E2137
• CSA Certified to standard C22.2 No. 248.12
• Self-certified for DC per UL248

Technical Specifications

• Ampere Rating: 1 A
• Body/Insulating Material: GMG
• Rated Voltage AC UL: 250 V
• Rated Voltage DC UL: 250 V
• Speed/Characteristic: Fast-Acting
• Fuse Class: Class RK1
• Connection/Terminal Type: Ferrule
• Connection/Terminal Material: Tin-Plated Copper
• AC Max I.R./Breaking Capacity: 200 kA
• Mounting: Clip

Typical Applications

• Non-Inductive Loads
• Load Centers and Switchboards
• Panelboards
• Feeder Circuits
• Bus Duct
• Lighting Circuits

Why Mersen?

Mersen's Amp-Trap® A2K Series combines a rejection-style Class RK1 design with a rugged fiberglass body to deliver current-limiting, code-compliant overcurrent protection for demanding electrical systems. Backed by UL Listing and CSA Certification, these fast-acting fuses give electrical professionals a dependable, easy-to-identify solution for branch/feeder and back-up protection.