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BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 400 A, 600 V AC - Fast-Acting Bolt-On Fuses
BUSSMANNFast-Acting Bolt-On Fuses

BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 400 A, 600 V AC

The BUSSMANN DFJ Series is a fast-acting, bolt-on fuse with a Class J body, rated at 400 A, 600 V AC, and 450 V DC (MPN DFJ-400). This industrial fuse is designed for overcurrent protection in electrical circuits.

SKU 3G-OTH-25629

Also listed as: DFJ400 · DFJ 400

Brand
BUSSMANN
Item
Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 400 A, 600 V AC
Category
Fast-Acting Bolt-On Fuses
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

BUSSMANN
Manufacturer Part Number
DFJ-400
Series
DFJ
Type
Class J, Bolt-On Body, Fast-Acting, 400 A
AC
600 V
DC
450 V

Technical Documents

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

Product Description

The BUSSMANN DFJ Series is a fast-acting, bolt-on fuse with a Class J body, rated at 400 A, 600 V AC, and 450 V DC (MPN DFJ-400). This industrial fuse is designed for overcurrent protection in electrical circuits.

Frequently Asked Questions

What is the BUSSMANN DFJ-400 fuse used for?

The BUSSMANN DFJ-400 is a fast-acting, bolt-on Class J fuse rated 400 A, 600 V AC, and 450 V DC. It provides overcurrent protection in industrial electrical circuits, such as motor control centers, panelboards, and switchgear, where high interrupting capacity and compact size are required.

What are the specifications of the BUSSMANN DFJ-400 fuse?

The BUSSMANN DFJ-400 is a Class J, bolt-on, fast-acting fuse rated 400 A, 600 V AC, and 450 V DC. It is part of the DFJ Series with manufacturer part number DFJ-400. Its compact body and high interrupting rating make it suitable for protecting branch circuits and equipment.

Where to buy the BUSSMANN DFJ-400 fuse worldwide?

3G Electric supplies the BUSSMANN DFJ-400 fuse worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Class J, 400 A, 600 V AC fast-acting fuse.

How to select the correct BUSSMANN DFJ-400 fuse for an application?

To select the BUSSMANN DFJ-400, verify your circuit's voltage (600 V AC or 450 V DC max) and continuous current (400 A). Ensure the Class J rejection-style holder matches the bolt-on body. Confirm the fast-acting characteristic suits your load's inrush profile. Consult a qualified engineer for coordination studies.

Used in

Common applications for BUSSMANN
Industrial motor control centers — BUSSMANN LPT series Class T time-delay fuses for branch circuit protection
Semiconductor protection in variable frequency drives — BUSSMANN FWA series fast-acting bolt-on fuses rated 150 V AC/DC
Automotive auxiliary circuit protection — BUSSMANN CB222 series Type II circuit breakers in 12 V DC systems
Control panel overcurrent protection — BUSSMANN FNA series midget time-delay indicating fuses for instrumentation
Main feeder protection in power distribution — BUSSMANN KLU series Class L time-delay bolt-on fuses up to 650 A
Fuse replacement in existing panels — BUSSMANN S-8301-1-R fuse block accepting 3AG and other glass/ceramic fuses

BUSSMANN Products

3G Electric supplies BUSSMANN 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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Cross-referenced by specification & description
BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 450 A, 600 V AC, 450 V DC (MPN DFJ-450)
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BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 450 A, 600 V AC, 450 V DC (MPN DFJ-450)
BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 225 A, 600 V AC, 450 V DC (MPN DFJ-225)
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BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 600 A, 600 V AC, 450 V DC (MPN DFJ-600)
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BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 600 A, 600 V AC, 450 V DC (MPN DFJ-600)
BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 350 A, 600 V AC, 450 V DC (MPN DFJ-350)
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BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 350 A, 600 V AC, 450 V DC (MPN DFJ-350)
BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 500 A, 600 V AC, 450 V DC (MPN DFJ-500)
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BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 500 A, 600 V AC, 450 V DC (MPN DFJ-500)
BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 300 A, 600 V AC, 450 V DC (MPN DFJ-300)
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BUSSMANN Fuse: DFJ Series, Class J, Bolt-On Body, Fast-Acting, 300 A, 600 V AC, 450 V DC (MPN DFJ-300)

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