Littelfuse L70S200 Semiconductor Fuse Very Fast-Acting 200A 700VAC 650VDC 20000A@650VDC

The L70S200 from Littelfuse stands out as a highly effective solution for overcurrent protection, specifically designed to meet the rigorous demands of modern electrical systems. This very fast-acting fuse is UL Recognized, allowing it to serve as supplementary protection within UL-listed equipment, ensuring compliance and reliability. With an impressive interrupting rating of 200 kAIC for AC and 20 kAIC for DC applications, it offers exceptional performance in preventing damage from overcurrents. Furthermore, its extremely current-limiting characteristics—exhibited through low I²t and peak let-through currents—make it particularly suitable for safeguarding sensitive semiconductor devices. This fuse provides not only reliable protection but also peace of mind in a variety of industrial and commercial settings.

• UL recognized for compliance and safety assurance
• Very fast-acting for rapid overcurrent interruption
• Extremely current limiting design protects sensitive semiconductor devices
• High interrupting rating of 200 kA AC and 20 kA DC
• Low total clearing I²t reduces energy let-through during faults
• Melamine body provides electrical insulation and durability
• Copper terminals with silver plating offer enhanced conductivity and corrosion resistance
• Bolted tag mounting ensures secure and reliable installation
• Wide operating temperature range from -55°C to +125°C
• RoHS compliant for environmental safety

• Amperage: 200 A
• Voltage: 700 Vac, 650 Vdc
• Interrupting Rating: 20,000 A @ 650 Vdc, 200 kA AC
• Opening: Very Fast-Acting (FF)
• Mounting Type: Bolted Tags (35 - 800 A)
• Recommended Torque: 15 N·m (132.76 in-lb)
• Recommended Hardware Size: M8 (5/16")
• Fuse Dimensions A: 2 27/32 in (72.2 mm)
• Fuse Dimensions B: 3 17/32 in (89.7 mm)
• Fuse Dimensions C: 4 5/16 in (105.6 mm)
• Fuse Dimensions D: 5 3/32 in (129.4 mm)
• Fuse Dimensions E: 1 1/2 in (38.1 mm)
• Fuse Dimensions F: 2 1/2 in (63.5 mm)
• Fuse Dimensions G: 2 1/2 in (63.5 mm)
• Fuse Dimensions H: 7/32 in (9.5 mm)
• Interrupt Current Melting (Pre-Arc): 6,411 A2s
• Total Clearing I2T (100 kA @ 700 Vac): 37,300 A2s
• Total Clearing I2T (200 kA @ 700 Vac): 45,583 A2s
• Total Clearing I2T (20 kA @ 650 Vdc): 11,447 A2s
• Watts Loss at 100% Rated Current: 75 W
• Watts Loss at 80% Rated Current: 33 W
• Material: Melamine body, Copper (silver plated) terminals
• Operating Temperature: -55°C to +125°C
• Approvals: UL Recognized, CSA Recognized
• Environmental: RoHS Compliant
• Country of Origin: Mexico

Environmental Info

RoHS Declaration

Datasheets

Certification

ICP Test Report