Littelfuse LD Series POWR-BLOK...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$52.86
Littelfuse LD Series POWR-BLOKS Fuse Block, Bolt-In Mounting

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

(No reviews yet) Write a Review

Model: LD2570-1

In Stock (leaves warehouse same day if ordered before 3pm ET)

$52.86
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

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.

Product Specs

Product Type:
Fuse Block
Series:
POWR-BLOKS
Configuration:
Bolt-In Mounting
Listing:
UL Recognized Component
Standards:
RoHS
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Fuse Holders & Blocks

Littelfuse LD2570-1 – Frequently Asked Questions

1) Is the Littelfuse LD Series POWR-BLOKS fuse block UL Listed or UL Recognized?
The LD Series POWR-BLOKS fuse block is a UL Recognized Component, documented under category XCFR2 with file numbers E309688 and E171395. That distinction matters for panel builders: a Recognized Component is intended for installation inside UL Listed end-use equipment such as panels, switchgear, and OEM assemblies, not as a standalone listed device. If your inspector is looking for a UL Listed mark on a field-installed enclosure, Recognized status is not the same thing.
2) Does the LD Series fuse block mount on DIN rail or does it bolt in?
Bolt-in only. Every LD Series POWR-BLOKS model uses a bolt-in mounting method, fastened directly to the panel or back-pan for a vibration-resistant attachment. If your assembly is built around DIN rail, this is not a drop-in; you would need a rail-mount or modular block instead, such as the Bussmann BCM603 two-pole modular fuse block.
3) Can I use an LD POWR-BLOKS block to replace an existing fuse block in a control panel?
Replacement and retrofit of fuse blocks is one of the listed applications for the LD Series, but because it is a bolt-in block you need the existing mounting hole pattern and the fuse class and amperage to line up with the model you choose, LD0402-3, LD2570-1, or LD5552-2. Pull the old block's dimensions and compare against the Littelfuse spec sheet for the model before you order.
4) What is the difference between the Littelfuse LD Series POWR-BLOKS fuse block and the Bussmann CHCC2DIU Class CC fuse block?
The Littelfuse LD Series POWR-BLOKS fuse blocks (LD0402-3, LD2570-1, LD5552-2) use bolt-in mounting and are non-indicating, so a blown fuse has to be found by testing rather than by a visible flag. The Bussmann CHCC2DIU is a 2-pole Class CC modular fuse block that is finger-safe with an indicator. If a panel builder wants blown-fuse indication and a finger-safe body on a Class CC circuit, the CHCC2DIU is the one to look at; if the requirement is a bolted, vibration-resistant block inside a distribution panel, the LD Series fits that.
5) I need a fuse block for a 1000 Vdc solar array — will a Littelfuse LD POWR-BLOKS block work?
For a photovoltaic string, the Bussmann CHPV2 Series is the purpose-built choice: it is a modular two-pole photovoltaic fuse block rated 1000 Vdc. The Littelfuse LD Series POWR-BLOKS blocks are bolt-in, non-indicating blocks intended for industrial and commercial AC power distribution panels, motor control centers, switchgear, and OEM assemblies. Match the PV block to the DC array and keep the LD Series for the distribution side.
6) Which models are available in the Littelfuse LD POWR-BLOKS fuse block line?
Three models: LD0402-3, LD2570-1, and LD5552-2. All three share the bolt-in mounting method and the non-indicating configuration, so the model number is what you specify to match the circuit protection requirement for your panel.
7) Are POWR-BLOKS fuse blocks suitable for a high-SCCR panel build?
That is the platform's purpose. The LD Series is built to the high short-circuit current rating standards of the POWR-BLOKS family, and Littelfuse publishes high-SCCR ratings documentation covering the series. For a specific SCCR value at a given fuse class and model, work from that manufacturer documentation when you file your panel label.
8) Can I use a Littelfuse LD Series POWR-BLOKS block to hold small AGC glass fuses?
No — for AGC glass cartridge fuses, look at the Bussmann 3833 Series AGC fuse block, which is offered in 1 to 8-pole configurations. The Littelfuse LD Series POWR-BLOKS fuse blocks (LD0402-3, LD2570-1, LD5552-2) are bolt-in power distribution blocks built around the POWR-BLOKS high-SCCR platform for panels and switchgear, a different class of product from a small AGC holder.
9) Which fuse block should I spec when the panel needs a UL Recognized Component for the end-use listing?
The Littelfuse LD Series POWR-BLOKS fuse blocks are UL Recognized Components under category XCFR2, referencing file numbers E309688 and E171395, which supports their use inside UL Listed end-use equipment such as panelboards, switchgear, and OEM assemblies. Among the Bussmann comparables, the CHPV2, CHCC2DIU, 3833, and BCM603 blocks are identified by series and pole configuration, so confirm the recognition detail you need against the specific block before substituting.
10) Is the Littelfuse LD Series fuse block RoHS compliant?
Yes, the LD Series carries RoHS compliance, and Littelfuse publishes China RoHS reporting for the LD platform. That documentation is what procurement groups in healthcare, education, and government typically need on file for a submittal package.
How fast can I get the Littelfuse LD2570-1 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Littelfuse LD2570-1 come with a warranty?
Absolutely. The Littelfuse LD2570-1 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Littelfuse LD2570-1?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Littelfuse LD2570-1 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!