Littelfuse JTD100ID Indicator Fuse 100A 600VAC 300VDC Knife-Blade Slo-Blo Time Delay

The JTD_ID Series by Littelfuse is engineered for exceptional reliability and safety in a variety of electrical applications. This indicator fuse features an innovative design that allows operators to quickly identify open fuses through an easily visible window — if the window is dark, the fuse has opened, eliminating the need for testing and reducing downtime significantly. Ideal for motor control centers and general-purpose circuits, including mains and feeders, this fuse not only protects transformers but also minimizes the risk of damaging connected equipment thanks to its superior overload and short circuit protection. With capabilities including a 100 ampere rating and a robust interrupting rating of 20,000A at 300VDC, the JTD_ID also reduces inventory needs by serving multiple applications while ensuring safety through IEC Type II “No Damage” protection. Moreover, its time-delay characteristics help mitigate nuisance tripping, making it a versatile choice for modern electrical environments, where operational efficiency and safety are paramount.

• Visible blown fuse indication window for quick fault identification
• Reduces accidents by minimizing exposure to live circuits
• Time-delay (Slo-Blo) design reduces nuisance tripping
• IEC Type II “No Damage” protection minimizes equipment damage
• High interrupting rating of 20,000 A at 300 V DC for robust short circuit protection
• Current-limiting construction reduces damage from short-circuit currents
• Versatile 100 A rating suitable for motor control centers and general-purpose circuits
• Meets UL 248-8 Class J standards for safety and reliability
• UL Listed and CSA Certified for assured compliance and safety
• Nickel-plated bronze and brass materials enhance durability and conductivity

• Voltage (AC): 600 V
• Voltage (DC): 300 V (up to 100 A)
• Ampere Rating: 100 A
• Interrupting Rating (DC): 20,000 A @ 300 V DC
• Interrupting Rating (AC): 200 kA rms symmetrical
• Time Delay: Yes (Slo-Blo/Time Lag)
• Current Limiting: Yes
• Material: Body: Melamine; Caps: Nickel-plated Bronze (up to 60 A), Brass (70–200 A), Brass Cap with Copper Blade (225–600 A)
• Dimensions: Length ranges from 57.2 mm to 203.2 mm depending on amperage
• Visual Indicator: Blown fuse indication window
• Applicable Standards: UL 248-8, Class J
• Compliance: UL Listed, CSA Certified, CE (225–600 A), RoHS (225–600 A)
• Country of Origin: Mexico

Certification

Datasheets