Bussmann FRN-R-400

Bussmann FRN-R-400

Overview

The Bussmann FRN-R-400 is a Class RK5 dual-element time-delay fuse engineered for heavy-duty industrial and commercial applications. With a 400 A current rating and voltage capacity of 250 V AC / 125 V DC, this fuse delivers superior overload and short-circuit protection. Its 200 kAIC interrupt rating at 250 V AC ensures dependable performance in high-fault current environments.

Built with a time-delay dual-element design, the FRN-R-400 provides a 10-second response at 500% overload, allowing it to withstand temporary inrush currents from motors and transformers without nuisance tripping. Its blade end x blade end connection ensures secure installation, while the finger-safe feature enhances operator safety.

Key Features

• Class RK5 dual-element time-delay fuse

• Current rating: 400 A

• Voltage rating: 250 V AC / 125 V DC

• Interrupt rating: 200 kAIC at 250 V AC / 20 kAIC at 125 V DC

• Time-delay response: 10 seconds at 500% overload

• Dual-element design for balanced overload and short-circuit protection

• Connection: Blade end x blade end

• Fuse indicator: Non-indicating

• Special feature: Finger safe

• Dimensions: 8.63 in (L) × 2.06 in (W) × 2.06 in (H)

• Weight: 1.6 lb

• Compliance: CE Marked

• Packaging type: Standard

Technical Specifications

• Manufacturer: Bussmann Series

• Catalog Number: FRN-R-400

• Product Type: Time-delay fuse

• Fuse Class: RK5

• Amperage Rating: 400 A

• Voltage Rating: 250 V AC, 125 V DC

• Interrupt Rating: 200 kAIC (250 V AC), 20 kAIC (125 V DC)

• Response Time: 10 seconds at 500% overload

• Number of Elements: Dual

• Fuse Indicator: Non-indicating

• Connection Type: Blade end x blade end

• Special Feature: Finger safe

• Dimensions: 8.63 in (L) × 2.06 in (W) × 2.06 in (H)

• Weight: 1.6 lb

• Compliance: CE Marked

• Packaging Type: Standard

Applications

• Heavy-duty industrial equipment

• Transformer protection

• Motor branch circuits

• Power distribution systems

• Commercial electrical systems

Why Choose the FRN-R-400

• High 200 kAIC interrupt rating ensures robust short-circuit protection

• Time-delay dual-element design tolerates motor and transformer inrush currents

• Finger-safe design enhances safety during installation and operation

• Reliable performance for industrial and commercial environments

• Trusted Bussmann quality with CE compliance

Order Now

The Bussmann FRN-R-400 Class RK5 Fuse is available and ships worldwide.

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NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply