KRP-C-800SP - 800Amp Fuse

KRP-C-800SP - 800Amp Fuse

When you’re looking for high‑capacity over‑current protection in demanding industrial or commercial electrical systems, the Eaton Bussmann Series KRP‑C‑800SP delivers. Engineered as a Class L time‑delay, current‑limiting fuse rated at 800 A, this model offers exceptional fault interruption performance — including a 300 kA interrupting capacity at 600 V AC and 100 kA at 300 V DC. Its design features bolted‑blade end connections for secure, reliable contact in heavy duty applications, and a compact cartridge size (8.63″ length × 2.53″ width × 2.53″ height) that fits tight panel configurations. With a minimum response time of about four seconds at 500% of rated current, it disconnects fault currents swiftly to safeguard downstream equipment and maintain operational confidence.

Key Features and Benefits

• High interrupting capacity: Designed to handle major fault events with ease (300 kA at 600 V AC / 100 kA at 300 V DC), making it suitable for rugged applications.
• Time‑delay / current‑limiting performance: Allows momentary startup currents or transient peaks, yet reacts quickly under sustained over‑current, offering both protection and flexibility.
• Bolted blade end connections: Ensures a strong, stable electrical interface in heavy‑duty panelboards, feeders and switchgear environments.
• Compact cartridge form‑factor: At under 9″ in length and approx. 2.5″ in diameter, it is designed for installation in spaces where larger fuses may not fit comfortably.
• Non‑indicating model: For setups where fuse status indicators are not required, this version offers a cost‑effective and durable solution.
• Optimized for heavy systems: The fuse features pure silver links, premium arc‑quenching filler, and high‑pressure O‑ring seals — all ensuring low heat, high reliability and extended system life.

Technical Specifications

• Amperage Rating: 800 A
  
• Voltage Rating: 600 V AC / 300 V DC
  
• Interrupting Rating:
  • 300 kA AC at 600 V
  • 100 kA DC at 300 V
• Response Time: Approximately 4 seconds at 500% of rated current
  
• Dimensions:
  • Length: 8.63 inches
  • Width: 2.53 inches
  • Height: 2.53 inches
• Weight: Approximately 3.8 lb (per datasheet)
  
• Connection: Bolted‑blade end on both ends (bolted blade x bolted blade)
  

Material Compliance and Certifications

• RoHS Compliant: Meets international standards restricting hazardous substances in electrical products.
• CE Marked: Meets European Union safety, health and environmental standards.
• UL Listed & CSA Certified: Built to recognized North American safety standards for Class L fuses.

Where It Works Best

• This fuse is an excellent match for high‑demand applications including large distribution switchboards, heavy machinery feeders, industrial control panels, and critical infrastructure that cannot afford downtime. If you’re dealing with high short‑circuit currents, demanding startup loads, or systems in which protective coordination and fault isolation are essential — this 800 A Class L time‑delay fuse is built for the job. It gives you confidence in protection while preserving system flexibility and footprint efficiency.