JJN-250 - 250Amp Fuse

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

• Product Name: Eaton Bussmann Series JJN Fuse
  
• Catalog Number: JJN-250
  
• Product Type: Fuse
  
• Fuse Class: Class T
  
• Amperage Rating: 250A
  
• AC Voltage Rating: 300VAC
  
• DC Voltage Rating: 160VDC
  
• AC Interrupt Rating: 200 kAIC at 300VAC
  
• DC Interrupt Rating: 20 kAIC at 160VDC
  
• Connection: Bolted Blade End x Bolted Blade End
  
• Fuse Indicator: Non-Indicating
  
• Length/Depth: 2.75 in.
  
• Height: 1 in.
  
• Width: 1 in.
  
• Product Weight: 0.25 lb.
  
• 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.