JJS-1200 - 1200 Amp Fuse

JJS-1200 - 1200 Amp Fuse

At 1200 amps, fuse selection is a specification-driven decision—your full electrical and physical details must match the equipment. The JJS-1200 is a 1200A, 600VAC Class T fuse with a 200 kA interrupting rating at 600VAC, very fast-acting operation, and a current-limiting design. For equipment designed around these characteristics, this fuse offers a clear combination of amperage, voltage, Class T construction, interrupting capacity, and physical format. It is built to last while keeping the specifications straightforward enough to verify before installation.

Key Features and Benefits

• 1200A rating: Designed for compatible electrical equipment specifically requiring a 1200-amp fuse.
• 600VAC voltage rating: Suitable where the equipment specification calls for a 600VAC fuse with the other listed JJS-1200 characteristics.
• Current-limiting Class T design: Combines the supplied Class T classification with a current-limiting operating characteristic.
• Knife-blade style: Provides a distinct physical format that can be checked against the existing fuse mounting arrangement.
• Non-indicating configuration: Clearly identified as a non-indicating fuse, removing guesswork about this particular feature.

Technical Specifications

• Part Number: JJS-1200
  
• Type: JJS
  
• Product Type: Fuse
  
• Amperage Rating: 1200A
  
• Voltage Rating: 600VAC
  
• A.I.C. / Interrupting Rating: 200 kA at 600VAC
  
• Fuse Class: Class T
  
• Operating Characteristic: Very fast-acting
  
• Current-Limiting: Yes
  
• Style: Knife-blade
  
• Indicator: Non-indicating
  
• Height: 5.271 in
  
• Width: 2.625 in
  
• Depth: 2.625 in
  

Material Compliance and Certifications

No specific UL, CSA, CE, RoHS, REACH, or other material-compliance or certification information was supplied for the JJS-1200. Do not assume these approvals based on the JJS type, Class T designation, amperage, or voltage rating. When a particular certification or material-compliance standard is required, confirm it on the fuse markings and in appropriate authoritative product documentation.

Where It Works Best

The JJS-1200 1200A Class T fuse is intended for compatible electrical equipment requiring a 1200A rating, 600VAC voltage rating, 200 kA interrupting rating at 600VAC, very fast-acting operation, current-limiting Class T characteristics, knife-blade style, and a non-indicating configuration. The stated 5.271" x 2.625" x 2.625" dimensions also make physical fit an important part of the compatibility check.