Eaton DFJ-450 High Speed Fuse - 100 kAIC at 600 Vac
Part Number: DFJ-450
Quick Summary
The Eaton DFJ-450 high speed fuse protects motor drives by fast overcurrent interruption in industrial panels. Too often, nuisance trips and downtime from transient faults challenge maintenance budgets and productivity. This device is CE marked, RoHS compliant, UL listed, and CSA certified, supporting regulatory approvals and third-party audits. Designed for Class J assemblies with clip-lock connections, it provides reliable protection in compact footprints while minimizing downtime and replacement costs. With a 450 A rating and high interrupt capability—200 kAIC at 600 Vac and 100 kAIC at 450 Vdc—it safeguards feeders and motor starters across demanding applications. This combination improves safety, reduces arc-flash exposure for maintenance teams, and supports total cost of ownership through longer service intervals.
Product Information
Extended Description
DFJ-450 Eaton: Eaton Bussmann series DFJ high speed fuse, 600 Vac or less, 450 Vdc or less, 450A, 200 kAIC at 600 Vac, 100 kAIC 450 Vdc, Non Indicating, High speed fuse, Clip-lock, Class J, Melamine tube
Product Name
Eaton Bussmann series DFJ high speed fuse
Catalog Number
DFJ-450
UPC
051712653978
Product Length/Depth
8.28 in
Product Height
2.65 in
Product Width
2.71 in
Product Weight
2.66 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Certifications
UL Listed CSA Certified
Amperage Rating
450 A
Interrupt rating
100 kAIC 450 Vdc 200 kAIC at 600 Vac
Voltage rating
600 Vac or less, 450 Vdc or less
Material
Melamine tube
Packaging type
Standard
Class
Class J
Connection
Clip-lock
Fuse indicator
Non Indicating
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - DFJ-450
DFJ-450~DRIVE FUSE
Datasheet - FNQ-30
Feature: High-speed interruption with 450 A rating and 200 kAIC at 600 Vac provides rapid fault clearing. Business Impact: Reduces fault energy, minimizes arc exposure, and cuts downtime in critical drives and feeders. Application: Motor drives and panel feeders in manufacturing and process industries. Feature: Class J design with clip-lock termination and melamine tube yields robust fit and straightforward replacement. Business Impact: Simplifies installation, reduces maintenance time, and lowers spares inventory. Application: Control cabinets and retrofit projects requiring standardized protection in tight spaces. Feature: Regulatory readiness with CE, RoHS, UL listing, and CSA certification. Business Impact: Streamlines procurement, accelerates compliance reviews, and mitigates supplier risk. Application: Global deployments across automotive, food & beverage, and packaging lines. Feature: Compact physical footprint with measured dimensions (8.28 in length, 2.71 in width, 2.65 in height) and 2.66 lb weight. Business Impact: Enables dense panel layouts and easier access for service technicians. Application: Distributed protection in compact switchgear and motor control centers. Feature: Non-indicating fuse with standard packaging supports reliable, non-intrusive integration in mature protection schemes. Business Impact: Reduces upfront costs while allowing external status monitoring as needed. Application: Systems with centralized annunciation or external diagnostics.
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FAQs
DFJ-450 uses a clip-lock connection designed for Class J protection assemblies. To install, align the fuse with the holder, engage the clip-lock endpoints for a secure fit, and verify seating before energizing. This design enables fast, tool-free replacement and reduces downtime during maintenance or cabinet upgrades. Always follow manufacturer mounting guidelines and inspect for proper clearance around the fuse body.
The DFJ-450 provides an interrupt rating of up to 200 kAIC at 600 Vac and 100 kAIC at 450 Vdc. Its voltage rating is 600 Vac or less and 450 Vdc or less, with an amperage rating of 450 A. These ratings support protection for motor drives, feeders, and power distribution in mixed AC and DC environments.
Yes. The DFJ-450 is designed for both AC and DC protection within its rated ranges (600 Vac max, 450 Vdc max) and 450 A. It is well-suited for DC drives, motor starters, and feeder protection in industrial controls, providing fast clearing to minimize damage and downtime while maintaining system reliability.
The DFJ-450 is CE marked, RoHS compliant, UL Listed, and CSA Certified. These certifications streamline regulatory approvals, supplier qualification, and customer audits across multiple regions, reducing procurement risk and ensuring compatibility with industry standards for electrical protection devices.
Expect lower downtime due to faster fault clearance and easier field replacement thanks to clip-lock design. The 450 A rating and high interrupt capabilities protect valuable drives and feeders from short circuits, reducing arc energy and component damage. Certifications and standardized Class J form factors also simplify stocking, training, and compliance, contributing to reduced total cost of ownership.