Littelfuse LD Series POWR-BLOKS Fuse Block, Bolt-In Mounting

Littelfuse LD Series POWR-BLOKS Fuse Block, Bolt-In Mounting

The Littelfuse LD Series POWR-BLOKS Fuse Block is a family of bolt-in mounted fuse blocks engineered for reliable circuit protection in industrial and commercial power distribution systems, available in the LD0402-3, LD2570-1, and LD5552-2 models to match a range of circuit protection needs. Each model in this non-indicating series is built to the high short-circuit current rating (SCCR) standards of the POWR-BLOKS platform, per Littelfuse's POWR-BLOKS high-SCCR ratings documentation. As a UL Recognized Component, the LD Series is suited for integration into listed panels, switchgear, and OEM electrical assemblies where dependable, code-compliant fuse holding is required for professional electrical installations.

Key Features

• Bolt-In Mounting: Every model in the LD Series uses a bolt-in mounting method for secure, vibration-resistant attachment within panels and power distribution equipment.
• Non-Indicating Design: The LD0402-3, LD2570-1, and LD5552-2 fuse blocks are configured without blown-fuse indication, providing straightforward circuit protection for standard distribution applications.
• POWR-BLOKS Series Construction: Part of the Littelfuse POWR-BLOKS power distribution block family, designed to support high short-circuit current rating (SCCR) electrical system requirements.
• High-SCCR Documentation: Backed by Littelfuse's POWR-BLOKS high-SCCR ratings documentation for demanding fault-current applications.
• UL Recognized Component: Documented under UL Recognized Component category XCFR2, referencing file numbers E309688 and E171395, supporting use in UL Listed end-use equipment.
• Manufacturer-Documented Compliance: Supplied with manufacturer compliance documentation, including China RoHS reporting for the LD Series platform.
• Model Lineup: Available across the LD0402-3, LD2570-1, and LD5552-2 models to fit different circuit protection requirements.

Certifications & Compliance

• UL Recognized Component (Category XCFR2)
• China RoHS Compliance Documentation Available

Technical Specifications

• Series: POWR-BLOKS
• Mounting Method: Bolt-In
• Indicating: No
• UL Recognized Component Category: XCFR2
• UL File Numbers: E309688, E171395
• Models: LD0402-3, LD2570-1, LD5552-2

Typical Applications

• Industrial Power Distribution Panels
• Motor Control Centers and Switchgear
• OEM Equipment Requiring High-SCCR Circuit Protection
• Commercial and Industrial Electrical Installations
• Panelboard and Load Center Wiring
• Fuse Block Replacement and Retrofit Projects

Why Littelfuse POWR-BLOKS?

Littelfuse engineers the POWR-BLOKS series for demanding power distribution environments where dependable fuse holding and documented safety compliance matter most. With UL Recognized Component status, bolt-in mounting built for secure long-term installation, and manufacturer-published high-SCCR ratings documentation, the LD Series delivers the code-compliant performance that professional electricians, panel builders, and OEM integrators expect from Littelfuse circuit protection products.