Bussmann FRS-R-400

Bussmann FRS-R-400

Overview

The Bussmann FRS-R-400 is a Class RK5 dual-element time-delay fuse engineered for heavy-duty protection in industrial and commercial electrical systems. With a 400 A current rating and voltage ratings of 600 V AC and 300 V DC, it delivers dependable overload and short-circuit protection. Its 200 kAIC interrupt rating at 600 V AC provides maximum safety in high fault current conditions.

The time-delay design allows a 10-second response at 500% overload, ensuring reliable startup protection for motors and transformers without nuisance tripping. Featuring a blade end x blade end connection, the FRS-R-400 installs securely for robust and long-term performance in demanding applications.

Key Features

• Class RK5 dual-element time-delay fuse

• Rated current: 400 A

• Voltage rating: 600 V AC / 300 V DC

• Interrupt rating: 200 kAIC at 600 V AC / 20 kAIC at 300 V DC

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

• Dual-element construction provides short-circuit and overload protection

• Connection: Blade end x blade end

• Fuse indicator: Non-indicating

• Dimensions: 5.5 in length × 1.06 in width × 1.06 in height

• Weight: 3 lb

• CE marked for compliance

• Quantity: Sold individually (1 piece)

Technical Specifications

• Manufacturer: Bussmann Series

• Catalog Number: FRS-R-400

• Product Type: Time-delay dual-element fuse

• Fuse Class: RK5

• Amperage Rating: 400 A

• Voltage Rating: 600 V AC, 300 V DC

• Interrupt Rating: 200 kAIC (600 V AC), 20 kAIC (300 V DC)

• Response Time: 10 seconds at 500% overload

• Number of Elements: Dual

• Connection Type: Blade end x blade end

• Fuse Indicator: Non-indicating

• Dimensions: 5.5 in (L) × 1.06 in (W) × 1.06 in (H)

• Weight: 3 lb

• Compliance: CE Marked

• Quantity: 1

Applications

• Heavy-duty motor protection

• Transformer circuits

• Industrial machinery and equipment

• Power distribution panels

• Commercial electrical systems

Why Choose the FRS-R-400

• High 200 kAIC interrupt rating ensures safe fault protection

• Dual-element time-delay design accommodates high inrush currents

• Provides reliable overload and short-circuit protection

• Secure blade-style connection for industrial-grade use

• Trusted Bussmann quality with CE compliance

Order Now

The Bussmann FRS-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