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3G Electric
LITTELFUSE JLS400 Fast-Acting Bolt-On Fuse, 400 A, 600 V AC, Class J - Fast-Acting Bolt-On Fuses
LITTELFUSEFast-Acting Bolt-On Fuses

LITTELFUSE JLS400 Fast-Acting Bolt-On Fuse, 400 A, 600 V AC, Class J

The LITTELFUSE JLS Series is a fast-acting bolt-on fuse, specifically the Class J JLS400 model rated at 400 A and 600 V AC. This non-indicating fuse features a bolt-on body design for secure installation in…

SKU 3G-OTH-25655

Also listed as: JLS 400 · JLS-400

Brand
LITTELFUSE
Item
JLS400 Fast-Acting Bolt-On Fuse, 400 A, 600 V AC, Class J
Part Number
JLS400
Category
Fast-Acting Bolt-On Fuses
Available to Order
Also known as:JLS400LITTELFUSE
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Technical Specifications

LITTELFUSE
Manufacturer Part Number
JLS400
Series
JLS
Type
Class J, Bolt-On Body, Fast-Acting, 400 A, Non-Indicating
AC
600 V

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

Product Description

The LITTELFUSE JLS Series is a fast-acting bolt-on fuse, specifically the Class J JLS400 model rated at 400 A and 600 V AC. This non-indicating fuse features a bolt-on body design for secure installation in industrial equipment. It is manufactured by LITTELFUSE under part number JLS400.

Frequently Asked Questions

What is the LITTELFUSE JLS400 fuse used for?

The LITTELFUSE JLS400 is a Class J fast-acting bolt-on fuse rated 400 A and 600 V AC. It protects industrial equipment such as motor control centers, panelboards, and switchgear from overcurrents, ensuring reliable circuit protection in manufacturing and process plants.

What are the specifications of the LITTELFUSE JLS400 fuse?

The LITTELFUSE JLS400 is a Class J, bolt-on body, fast-acting, non-indicating fuse rated 400 A and 600 V AC. It is part of the JLS Series and carries manufacturer part number JLS400. Its compact design allows secure installation in high-current industrial circuits.

Where to buy the LITTELFUSE JLS400 fuse worldwide?

3G Electric supplies the LITTELFUSE JLS400 fuse worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this Class J, 400 A, 600 V AC fast-acting fuse to your facility. Contact us for a quote and delivery options.

How to select the correct LITTELFUSE JLS400 fuse for an application?

To select the LITTELFUSE JLS400, verify your circuit's voltage (600 V AC max) and continuous current (400 A). Ensure the fuse holder accepts Class J bolt-on bodies. Confirm the fast-acting characteristic matches your equipment's inrush tolerance. Consult a qualified engineer for coordination studies.

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 fast-acting bolt-on fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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