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LITTELFUSE LFR25030-3S Fuse Block - Fuse Blocks for UL Class RK1 & RK5 Fuses
LITTELFUSEFuse Blocks for UL Class RK1 & RK5 Fuses

LITTELFUSE LFR25030-3S Fuse Block

The LITTELFUSE LFR25030-3S is a 3-pole, open-block-design fuse block for UL Class RK1 and RK5 fuses, rated 250 V AC with screw-type, non-indicating terminals. 3G Electric interprets this demand and delivers it across…

SKU 3G-OTH-25340

Also listed as: LFR250303S · LFR25030 3S

Brand
LITTELFUSE
Item
LFR25030-3S Fuse Block
Part Number
LFR25030-3S
Category
Fuse Blocks for UL Class RK1 & RK5 Fuses
Available to Order
Also known as:LFR25030-3SLITTELFUSE
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

LITTELFUSE
Manufacturer Part Number
LFR25030-3S
Type
Screw, Non-Indicating
AC
250 V
Pole
3

Technical Documents

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

Product Description

The LITTELFUSE LFR25030-3S is a 3-pole, open-block-design fuse block for UL Class RK1 and RK5 fuses, rated 250 V AC with screw-type, non-indicating terminals. 3G Electric interprets this demand and delivers it across 14 industrial departments — with specialist depth in combustion, pumps and controls as an authorised distributor — ensuring you get the right solution, not just a part.

Frequently Asked Questions

What is the LITTELFUSE LFR25030-3S fuse block used for?

The LITTELFUSE LFR25030-3S is a 3-pole open block designed to hold UL Class RK1 and RK5 fuses in industrial control panels, motor circuits, and branch-circuit protection. It provides a screw-type, non-indicating connection for 250 V AC applications, ensuring reliable overcurrent protection in manufacturing, HVAC, and power distribution systems.

What are the specifications of the LITTELFUSE LFR25030-3S?

The LITTELFUSE LFR25030-3S is a 3-pole, open-block fuse holder rated for 250 V AC. It uses screw terminals and is non-indicating. The block accepts UL Class RK1 and RK5 fuses. The manufacturer part number is LFR25030-3S. This model is designed for secure, maintenance-friendly fuse mounting in industrial equipment.

Where to buy the LITTELFUSE LFR25030-3S worldwide?

3G Electric supplies the LITTELFUSE LFR25030-3S fuse block to customers worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact 3G Electric for a quote and lead time. We source and deliver this part to any country.

How to install the LITTELFUSE LFR25030-3S fuse block?

Mount the LITTELFUSE LFR25030-3S on a flat surface using the provided slots. Connect line and load wires to the screw terminals, torquing to the manufacturer's specification. Insert the correct Class RK1 or RK5 fuse into each pole. Ensure the circuit is de-energized before installation. Follow all applicable electrical codes.

Used in

Common applications for LITTELFUSE
Industrial drives — Littelfuse PSR series semiconductor fuses for overcurrent protection of variable-frequency drives and DC bus circuits.
Branch circuit protection — Littelfuse CCMR series time-delay fuses in control panels and distribution boards.
Compact equipment — Littelfuse SLC series Class G fuses in rejection-style holders for space-constrained branch circuits.
Main service entrance — Littelfuse KLPC series Class L bolt-on fuses for high-current industrial power distribution.
Motor circuits — Littelfuse FLSR series Class RK5 time-delay fuses for motor branch circuits and transformers.
Power supplies — Littelfuse 473 series axial-lead time-delay fuses for solder-in protection in power supplies and instrumentation.
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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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LITTELFUSE
Single-pole open-style fuse block rated 600 V AC with box lug terminals and non-indicating design. Accepts UL Class RK1 and RK5 fuses. Used in industrial electrical panels for overcurrent protection

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