KTN-R-400 - 400Amp Fuse Description
KTN-R-400 - 400Amp Fuse
When you're selecting a 400A fuse, don't rely on appearance or amperage alone. The Eaton Bussmann KTN-R-400 is specifically rated for 400A at 250 Vac/Vdc, is Class RK1, and has a blade-end x blade-end connection. Its interrupt ratings are 200 kAIC at 250 Vac and 100 kAIC at 250 Vdc, making it essential for maintenance teams and electricians.
Key Features and Benefits
- 400A rating — clearly identifies the amperage of the KTN-R-400 for specification matching.
- 250 Vac and 250 Vdc ratings let buyers verify both the AC and DC voltage information supplied for this model.
- Class RK1 classification gives maintenance personnel an important specification to check against equipment documentation.
- The blade-end-to-blade-end connection provides a straightforward physical connection detail for replacement comparison.
- Single-element construction adds another manufacturer-specified characteristic to confirm when identifying the correct fuse.
- The KTN-R-400 specifies melamine glass tube material.
- 70/30 brass end cap is listed as a special feature.
- Non-indicating configuration—the manufacturer lists the model as non-indicating.
Technical Specifications
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Product Name: Eaton Bussmann series KTN-R fuse
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Catalog Number: KTN-R-400
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UPC: 051712407250
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Product Type: Fuse
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Amperage Rating: 400 A
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Voltage Rating: 250 Vac, 250 Vdc
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Interrupt Rating: 200 kAIC at 250 Vac; 100 kAIC at 250 Vdc
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Class: Class RK1
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Material: Melamine glass tube
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Number of Elements: 1
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Connection: Blade end x blade end
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Fuse Indicator: Non-indicating
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Special Feature: 70/30 brass end cap
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Product Length/Depth: 8.63 in
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Product Height: 2.06 in
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Product Width: 2.06 in
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Product Weight: 1.94 lb
Material Compliance and Certifications
The KTN-R-400 features a melamine glass tube and a 70/30 brass end cap. The supplied manufacturer data lists compliance as: Not Applicable. The provided specifications include no additional certifications, so we assume and add none here.
Where It Works Best
The Eaton Bussmann KTN-R-400 fuse is best suited for equipment whose documentation calls for a 400A Class RK1 fuse rated for 250 Vac or 250 Vdc and whose required connection and physical dimensions match this model. Its manufacturer-listed interrupt ratings are 200 kAIC at 250 Vac and 100 kAIC at 250 Vdc, making those values important parts of the specification check rather than details to overlook.
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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:2.0
- Depth:2.0
- Height:8.63
- Amperes:400
- A.I.C. Rating & Volts:200 kA @ 250 V.AC
- Type:KTN-R
- Additional Notes:Knife-Blade Style, Non-Indicating, Fast-Acting, current-limiting Class R Fuse
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