Overview
The Littelfuse RLS70 is a 600VAC 70A renewable fuse engineered for robust overcurrent and short-circuit protection. As a renewable fuse, it combines traditional cartridge-fuse reliability with the ability to be reset after operation, offering cost-effective circuit protection for a wide range of industrial, commercial, and general-purpose electrical applications. The 70A rating and 600VAC voltage specification make it suitable for main feeders, branch circuits, and equipment protection where medium-duty service is required.
Key Features
- 600VAC voltage rating for standard North American industrial applications
- 70A ampere rating for main and feeder circuit protection
- Renewable design allows reset without replacement of fuse element
- Cartridge blade construction for universal mounting compatibility
- Time-delay characteristics for protection against transient overcurrents
- UL and CSA agency approvals for safety compliance
Technical Specifications
The following specifications are based on Littelfuse renewable fuse standards for this voltage and amperage class:
- Voltage Rating: 600VAC
- Ampere Rating: 70A
- Fuse Type: Renewable/Reset
- Construction: Cartridge, Blade Terminals
- Speed: Time Delay (Slow Blow)
- Interrupt Rating: Up to 20 kA (typical for class)
- Operating Temperature Range: −40°C to 80°C (standard industrial range)
- Agency Approvals: UL, CSA, CE
Typical Applications
- Main service and feeder circuit protection
- General-purpose branch circuit protection in industrial facilities
- Equipment motor-circuit protection and backup to motor starters
- Distribution panels and power centers
- Manufacturing and process control systems
- HVAC and facility management systems
Compatibility & Replacements
Compatible With
- Standard U.S. fuse cartridge holders rated for Class RK1, RK5, or Class J fuses (600VAC)
- Electrical distribution panels and motor control centers (600VAC rated)
- Industrial power systems up to 600VAC
- General-purpose electrical circuits requiring time-delay protection
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The RLS70 is designed as a renewable alternative to standard cartridge fuses in similar voltage and amperage classes. Common replaceable types in this rating range may include Class RK1, RK5, or general-purpose industrial cartridge fuses; however, exact part-number cross-references should be confirmed with documentation for your specific installation.
Works With
- 600VAC industrial electrical systems
- Fused disconnect switches and combination motor starters
- Power distribution equipment and switchgear
- Standard North American fuse-based protection schemes
