FLSR070-ID - 70Amp Fuse

FLSR070-ID - 70Amp Fuse

When your industrial system demands reliable, high‑performing protection, the Littelfuse FLSR070ID 70 Amp Class RK5 Indicating Time‑Delay Fuse delivers. It’s built for heavy‑duty use—featuring a 70 A continuous current rating and a knife‑blade style terminal design for secure, vibration‑resistant connection. Thanks to its dual‑element time‑delay (Slo‑Blo) technology, this fuse handles high inrush events—like motor starts or transformer energizations—without unnecessary trips. And with its built‑in visual indicator, you can instantly spot a blown fuse, speeding up maintenance and reducing downtime in critical systems.

Key Features and Benefits

• Knife‑Blade Terminal Construction: Offers sturdy, secure mounting that resists vibration and ensures consistent contact in demanding industrial environments.
• Time‑Delay (Dual‑Element) Capability: Allows high inrush currents to pass during start‑up while still providing robust overload protection, minimizing nuisance tripping in motor, compressor, and transformer circuits.
• Indicating Feature: A built‑in blown‑fuse indicator clearly signals when the fuse has operated — helping maintenance crews identify and replace it quickly, saving time and boosting uptime.
• High Interrupting Rating: Rated to clear high fault currents (e.g., up to 200 kA at 600 V AC), so it provides dependable protection at the point of fault.
• Industrial‑Grade Build: Designed as a Class RK5 fuse for demanding settings, making it a trusted choice for factory environments and heavy electrical loads.

Technical Specifications

• Catalog Number: FLSR070ID
• Continuous Current Rating: 70 Amps
• Maximum AC Voltage: 600 V AC
• Maximum DC Voltage: 300 V DC
• Interrupting Rating: 200,000 A (200 kA) at 600 V AC; 20,000 A (20 kA) at 300 V DC
• Fuse Type: Dual‑element, time‑delay (Slo‑Blo)
• Construction Style: Knife‑blade blade terminal style
• Fuse Class: RK5 (UL 248‑12)
• Indicating Feature: Built‑in blown‑fuse visual indicator
• Typical Length & Diameter: Approximately 7.88 inches long × 1.24 inches in diameter for the 70 A size.

Material Compliance and Certifications

• UL Listed: Conforms to UL 248‑12 standards for Class RK5 fuses.
• CSA Certified: Meets Canadian CSA requirements.
• RoHS Compliant: Manufactured in accordance with restrictions on hazardous substances.

Where It Works Best

• Motor control panels and centers (handling high inrush when motors start)
• Transformer feeds and switchboards (where fault currents may be large)
• Heavy industrial machinery and manufacturing equipment
• HVAC systems, lighting feeders, pump/compressor circuits – any application with large loads, frequent starts, or demanding electrical environments