Overview
The Littelfuse JTD10ID is a Powr-Pro Class J fuse designed for high-reliability overcurrent protection in industrial and commercial electrical systems. The JTD_ID Indicating Series fuses provide visual blown indication and are time-delay, dual-element fuses carrying the Littelfuse POWR-PRO advanced technology designation, specifically designed for circuits where space is at a premium. The fuse is rated 10A, with 600Vac/300Vdc voltage ratings, 200kA@600V AC short-circuit current, and UL listed, CSA certified.
Key Features
- Visual blown indication for quick identification and maximum protection in compact size
- Patented design that reduces nuisance fuse openings and provides Type 2 “No Damage” protection for both NEMA- and IEC-type motor circuit components
- Ideal for systems with high in-rush currents; offers advanced current-limiting capability with self-certification to 300,000 A rms symmetrical
- Minimizes nuisance openings, increases system performance by minimizing equipment damage, and improves safety by minimizing accidents
- Self-certification testing conducted at a nationally recognized testing laboratory, with tests UL witnessed
Technical Specifications
- Rating: 10A (amperes)
- Voltage: 600VAC / 300VDC
- Series: JTD_ID (Indicating)
- Class: J
- Type: Time-Delay Dual-Element
- Short-Circuit Rating (AC): 200kA @ 600V AC
- Short-Circuit Rating (DC): 20kA @ 300V DC
- Construction: Cartridge-style (0.81 diameter)
- Certifications: UL Listed, CSA Certified
- Quantity per Box: 4 fuses
Typical Applications
- Fused combination motor controllers and motor control centers
- Transformer protection and series-rated molded case circuit-breaker panels
- General purpose circuits — mains, feeders and branch circuits — especially when space is at a premium
- Industrial control panels and distribution systems with high inrush current demand
- OEM equipment requiring compact, current-limiting overcurrent protection
Compatibility & Replacements
Compatible With
- Class J fuse holders and dead-front fuse cartridge systems
- Motor control centers (MCC) with Class J cartridge slots
- Fused combination starters and disconnect switches rated for Class J
- Industrial electrical distribution equipment and panels
- Equipment designed for 600VAC / 300VDC Class J fuses
Replaces / Drop-In Replacement For
- Littelfuse JTD10 (non-indicating version at same amperage)
- Other Class J 10A time-delay fuses in compatible holders (verify pin/cartridge compatibility)
Works With
- Littelfuse Powr-Safe LFPSJ Series dead-front fuse holders
- Standard Class J 600VAC fuse cartridge holders and disconnect switches
- NEMA and IEC-type motor control equipment
- Molded case circuit breakers with series-rating applications




