JJS-400 - 400Amp Fuse Description
JJS-400 - 400Amp Fuse
When you’re replacing a fuse in existing electrical equipment, the useful question isn’t simply, “Is it 400 amps?” The complete specification matters. The Eaton Bussmann series JJS-400 is a 400A, 600V Class T fuse with a manufacturer-specified 200 kAIC interrupting rating at 600VAC. For an application that requires this combination of amperage, voltage, fuse class, interrupting rating, connection style, and dimensions, it provides a clear specification match. It’s built to last, but correct fuse selection should always start with the equipment's requirements—not appearance or amperage alone.
Key Features and Benefits
- 400A Class T configuration: Rated at 400 amps for compatible equipment specifically requiring this fuse class and amperage.
- 600V rating: Provides a clear voltage rating for accurate application matching.
- Bolted blade connections: Uses a bolted blade end x bolted blade end connection configuration.
- Non-indicating design: The fuse does not include an integral visual indicator of fuse status.
- Easy identification: Catalog number JJS-400 and UPC 051712628044 help technicians identify the exact component during replacement and maintenance.
Technical Specifications
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Product Name: Eaton Bussmann Series JJS Fuse
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Catalog Number: JJS-400
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Product Type: Fuse
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Fuse Class: Class T
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Amperage Rating: 400A
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Voltage Rating: 600V
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Interrupt Rating: 200 kAIC at 600VAC
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Connection: Bolted Blade End x Bolted Blade End
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Fuse Indicator: Non-Indicating
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Special Feature: Non-Indicating
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Product Length/Depth: 3.63 in.
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Product Height: 1 in.
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Product Width: 1 in.
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Product Weight: 0.5 lb.
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UPC: 051712628044
Material Compliance and Certifications
Manufacturer information lists the Eaton Bussmann JJS-400 as CE-marked and RoHS-compliant. RoHS compliance restricts specified hazardous substances used in electrical and electronic products.
Where It Works Best
The JJS-400 is best considered for compatible electrical equipment that requires a 400A, 600V Class T fuse with a 200 kAIC interrupting rating at 600VAC and a bolted blade-end-to-bolted blade-end connection. Its 3.63 x 1 x 1-inch dimensions are another important part of the compatibility check, particularly when replacing a fuse in existing equipment where the available mounting space and connection configuration are already established.
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Eaton®, Cutler-Hammer®, Westinghouse®, Challenger®, Bussmann®, Edison®, Edison Fuse®, GTE Sylvania®, Crouse-Hinds®, and Cooper® are registered trademarks of Eaton Corporation plc. Products sold are surplus, used, or refurbished and are NOT supplied by Eaton Corporation plc or its affiliates.
Specifications
- Width:1.593
- Depth:1.593
- Height:3.675
- Amperes:400
- A.I.C. Rating & Volts:200 kA @ 600 V.AC
- Type:JJS
- Additional Notes:Knife-blade Style, Non-Indicating, Very Fast-Acting, current-limiting Class T Fuse
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