LLSRK075ID - 75 Amp Fuse

LLSRK075ID - 75 Amp Fuse

The Littelfuse LLSRK075ID is a 75-amp, 600-volt Class RK1 fuse built to protect your industrial or commercial electrical systems. It’s designed for equipment that needs reliable overcurrent protection without causing unnecessary downtime. The built-in Indicator window shows right away if the fuse has blown, so you can spot problems quickly and keep operations moving. Its solid-state overload section has no moving parts, making it more dependable than traditional fuses, and the time-delay Slo-Blo design handles motor and transformer startup currents safely.

Key Features and Benefits

• Solid-State Overload Section: No springs or moving parts, which means fewer mechanical failures and longer life.
• Visual Indicator: Quickly tells you when the fuse has blown, cutting troubleshooting time.
• Flexible Use: Works across different systems and equipment types, reducing inventory headaches.
• Time-Delay Design: Protects against overcurrent while handling short-term surges from motors and transformers.

Technical Specifications

• Current Rating: 75 Amps continuous
• Voltage Rating: 600 VAC / 300 VDC
• Interrupting Ratings:
  • 200 kA @ 600 VAC
  • 20 kA @ 300 VDC
• Fuse Class: RK1 (UL Class)
• Indication: Yes – Visual Indicator
• Opening Type: Time-Delay (Slo-Blo)
• Body Style: Knife-Blade Industrial Cartridge

Material Compliance and Certifications

• Environmental Standards: RoHS and REACH compliant
• Certifications: UL 248-12 listed, CSA certified, CE marked

Where It Works Best

• This fuse is ideal for environments where equipment safety and uptime are critical. It’s perfect for motors, control circuits, and switchgear in factories, manufacturing facilities, or commercial operations. With its clear visual indicator and reliable protection, it helps you avoid unexpected downtime and keeps your systems running smoothly.