Fuse JJN (Class T) 350 Amp

Protect high-amperage DC electronics with a Blue Sea Systems Class T fuse designed for extremely fast short-circuit response. The 350 Amp rating and high interrupt capability make it a strong choice for inverter and other power-distribution protection applications.

Key Features

• 350 Amp Class T fuse for high-amperage DC protection
• Extremely fast short-circuit response to help protect connected electronics
• 20,000 Ampere Interrupt Capacity (AIC) for DC applications (UL rated under UL189L)

Intended Use

• Inverter circuit protection (DC power systems)
• Battery and power-distribution protection where Class T fuses are used
• High-amperage DC electronics protection

Product Details

• Fuse type: JJN (Class T)
• Current rating: 350 Amp
• Interrupt capacity (AIC): 20,000 Ampere Interrupt Capacity (AIC)
• UL rating: DC applications under UL189L
• SKU: 661-5120
• Variant weight on file: 136 grams

Parts Desk Insights

Best Use Case: Use this Class T fuse as the fast short-circuit protection element in a properly matched Class T fuse block system for high-amperage DC equipment such as inverters.

Common Issues: Avoid installing the fuse in an incorrectly sized fuse block. If nuisance operation occurs, re-check conductor sizing and the overall fuse system (fuse block type and mating connections) per your systems wiring design and service documentation.

Related Products & Accessories

• Browse Fuse Block options for Class T fuses – Pairing this fuse with the correct Class T fuse block is essential for a proper, secure installation.