Littelfuse JLLN150P Class T Fast-Acting Fuse 150A 300VAC 125VDC Plated

The Littelfuse JLLN150P is a Class T fast-acting fuse with a 150 ampere rating and knife-blade-style construction, designed to provide reliable overcurrent protection for commercial and industrial electrical systems. These space-saving POWR-GARD Class T fuses are the most compact fuses available in ratings above 30 amperes—less than one-third the size of comparable Class R fuses, making them ideal for installations where panel space is at a premium.

Key Specifications:

• Voltage Rating: 300 VAC / 125 VDC
• Current Rating: 150 Amperes
• Interrupting Rating: 200,000 Amperes (Symmetrical AC), 20,000 Amperes (DC)
• Terminal Type: Blade (Knife-Blade)
• Dimensions: 1.063" Diameter x 2.437" Length
• Approvals: UL 248-15, CSA, CE
• Plated contacts for enhanced conductivity and corrosion resistance

Applications and Features:

• Used for short-circuit protection of drives and surge-sensitive components such as variable speed drives and rectifiers
• Provides fast-acting overload and short circuit protection for non-inductive circuits and equipment
• Protection of individual electric services and meters in compact main switches and meter stacks
• Suitable for molded case circuit breaker loadcenters and panelboards with series ratings up to 200,000 amperes
• Extremely current limiting design stops damaging short circuit current faster than any mechanical protective device
• Typical three-pole Class T fuse blocks require less than 50% of the panel area required for Class R fuse blocks

The JLLN150P features plated terminals for improved electrical contact and long-term reliability in demanding industrial environments. This is a UL Class T fuse suitable for commercial electrical systems, switchgear, panelboards, and motor control centers where space efficiency and high interrupting capacity are critical requirements.

Note: When used in inductive circuits, the ampere rating may need to be increased to prevent nuisance opening on inrush currents. In such applications, this fuse may provide short circuit protection only.