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LITTELFUSE Fuse Block: Open Block Design, 1 Pole, 250 V AC, Screw - Fuse Blocks for UL Class RK1 & RK5 Fuses
LITTELFUSEFuse Blocks for UL Class RK1 & RK5 Fuses

LITTELFUSE Fuse Block: Open Block Design, 1 Pole, 250 V AC, Screw

The LITTELFUSE Fuse Block (MPN LFR25030-1S) is an open block design for UL Class RK1 and RK5 fuses, featuring 1 pole, 250 V AC rating, and screw-type, non-indicating terminals. 3G Electric interprets this customer…

SKU 3G-OTH-25329

Also listed as: LFR250301S · LFR25030 1S

Brand
LITTELFUSE
Item
Fuse Block: Open Block Design, 1 Pole, 250 V AC, Screw
Category
Fuse Blocks for UL Class RK1 & RK5 Fuses
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Technical Specifications

LITTELFUSE
Manufacturer Part Number
LFR25030-1S
Type
Screw, Non-Indicating
AC
250 V
Pole
1

Technical Documents

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LITTELFUSE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The LITTELFUSE Fuse Block (MPN LFR25030-1S) is an open block design for UL Class RK1 and RK5 fuses, featuring 1 pole, 250 V AC rating, and screw-type, non-indicating terminals. 3G Electric interprets this customer demand and sources genuine industrial equipment across 14 departments, with specialist depth in combustion, pumps, and controls as an authorised distributor for brands like Schneider, ABB, Siemens, SKF, Festo, Fluke, Interpump, and FBR.

Frequently Asked Questions

What is a Littelfuse LFR25030-1S fuse block used for?

The Littelfuse LFR25030-1S is a 1-pole, 250 V AC open-block fuse holder designed for UL Class RK1 and RK5 fuses. It is used in industrial control panels, motor protection circuits, and power distribution systems where reliable overcurrent protection is required. The screw-type terminals simplify wiring in maintenance and OEM applications.

What are the specifications of the Littelfuse LFR25030-1S fuse block?

The Littelfuse LFR25030-1S is a 1-pole, 250 V AC open-block design with screw-type terminals and non-indicating operation. It accepts UL Class RK1 and RK5 fuses. The manufacturer part number is LFR25030-1S. This block is suitable for branch-circuit protection in industrial equipment and control panels.

Where to buy a Littelfuse LFR25030-1S fuse block worldwide?

3G Electric supplies the Littelfuse LFR25030-1S fuse block to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this 1-pole, 250 V AC open-block design for UL Class RK1 and RK5 fuses.

How do you select the right Littelfuse fuse block for your application?

To select the correct Littelfuse fuse block like the LFR25030-1S, match the voltage rating (250 V AC), number of poles (1), and fuse class (UL RK1/RK5) to your circuit requirements. Ensure the screw terminal size accommodates your wire gauge. For high-vibration environments, consider a closed-block design. Always verify the interrupting rating with your system's available fault current.

Used in

Common applications for LITTELFUSE
Power electronics protection — Littelfuse PSR Series semiconductor fuses for IGBT and diode protection in variable frequency drives.
Solar photovoltaic systems — Littelfuse SPF Series fast-acting fuses for string overcurrent protection in PV arrays.
Automotive electrical systems — Littelfuse MIDI® 498 Series bolt-on fuses for battery and alternator protection in vehicles.
Industrial control panels — Littelfuse KLKD Series midget fuses for branch circuit protection in control transformers and relays.
Motor control centers — Littelfuse BLF Series fast-acting fuses for short-circuit protection of motor starters and contactors.

LITTELFUSE Products

3G Electric supplies LITTELFUSE fuse blocks for ul class rk1 & rk5 fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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