The Bussmann FRS-R-400 is a 400-amp, 600-volt Class RK5 dual-element time-delay fuse designed to provide reliable overcurrent protection in industrial and commercial electrical systems.
Key Features
- Dual-Element Time-Delay Design: Allows for a minimum of 10 seconds delay at 500% of the rated current, accommodating temporary inrush currents without nuisance tripping.
- High Interrupting Capacity: Rated at 200,000 amperes interrupting capacity (AIC) at 600 VAC and 20,000 AIC at 300 VDC, ensuring robust protection against high fault currents.
- Current Limiting: Reduces the let-through energy during fault conditions, minimizing potential damage to downstream equipment.
- Blade-Type Terminals: Facilitate secure and straightforward installation in compatible fuse holders.
- Compliance and Certifications: Meets UL 248-12, CSA C22.2 No. 248.12 standards, and is CE marked, ensuring adherence to industry safety and performance requirements.
Applications
The FRS-R-400 fuse is ideal for protecting heavy-duty motors, transformers, industrial machinery, and power distribution panels, offering dependable performance in demanding environments.
Specifications
- Amperage Rating: 400 A
- Voltage Rating: 600 VAC / 300 VDC
- Interrupting Rating: 200 kA at 600 VAC; 20 kA at 300 VDC
- Response Time: 10 seconds at 500% overload
- Fuse Class: RK5
- Terminal Type: Blade end x blade end
- Dimensions: Approximately 2.34 inches in diameter and 11.63 inches in length
- Weight: Approximately 2.4 lbs
The Bussmann FRS-R-400 fuse combines advanced protection features with a durable design, making it a reliable choice for safeguarding electrical systems against overcurrent conditions.
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