JJN-250 - 250Amp Fuse Description
JJN-250 - 250Amp Fuse
With a 250-amp Class T fuse, getting the details right means looking beyond amperage alone. The Eaton Bussmann series JJN-250 is rated for 300VAC and 160VDC, with an interrupting rating of 200 kAIC at 300VAC and 20 kAIC at 160VDC. The JJN-250 is non-indicating, meaning it has no visual fuse-status indicator, whether you’re replacing an existing JJN-250 or researching a fuse for equipment that specifies these ratings.
Key Features and Benefits
- 250A Class T fuse: Combines a 250-amp rating with the Class T configuration for applications specifically requiring these characteristics.
- AC and DC voltage ratings: Rated at 300VAC and 160VDC, allowing the appropriate rating to be checked against the equipment being serviced.
- Bolted-blade connections: Features bolted blade ends on both sides, an important physical detail when confirming compatibility.
- Non-indicating design: Does not provide a visual indication of fuse status.
Technical Specifications
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Product Name: Eaton Bussmann Series JJN Fuse
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Catalog Number: JJN-250
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Product Type: Fuse
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Fuse Class: Class T
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Amperage Rating: 250A
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AC Voltage Rating: 300VAC
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DC Voltage Rating: 160VDC
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AC Interrupt Rating: 200 kAIC at 300VAC
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DC Interrupt Rating: 20 kAIC at 160VDC
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Connection: Bolted Blade End x Bolted Blade End
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Fuse Indicator: Non-Indicating
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Length/Depth: 2.75 in.
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Height: 1 in.
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Width: 1 in.
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Product Weight: 0.25 lb.
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UPC: 051712627092
Material Compliance and Certifications
The manufacturer identifies the Eaton Bussmann JJN-250 as CE-marked and RoHS-compliant.
Where It Works Best
The JJN-250 250A Class T fuse suits compatible existing electrical equipment that requires its combination of 250A amperage, 300VAC or 160VDC rating, corresponding interrupting rating, Class T configuration, bolted-blade connections, and physical dimensions. Its documented specifications make it particularly straightforward to evaluate when the equipment documentation already calls for a JJN-250 or a fuse with precisely matching requirements.
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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:1.312
- Depth:1.312
- Height:2.75
- Amperes:250
- A.I.C. Rating & Volts:200 kA @ 300 V.AC
- Type:JJN
- Additional Notes:Knife-blade Style, Non-Indicating, Very Fast-Acting, current-limiting Class T Fuse
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