Fuse Class T 40A JJN Series MPN:JJN-40

Fast-acting, nonindicating UL Class T fuses open within seconds of being exposed to overloads and short circuits. Also called fast-blow Class T fuses, they are highly sensitive to changes in current flow and don't tolerate temporary overload currents or power surges. They have no indicator for identifying a blown fuse, so they're sometimes used with an indicating fuse block or cover.

UL Class T fuses are very small fuses that require minimal installation space for protecting electrical feeders and branch circuits from overcurrent. These fuses have an interrupting rating (IR) of 200kA and are not interchangeable with any other UL fuse class. They are current-limiting to prevent electrical damage by disconnecting circuits before they're exposed to the full magnitude and duration of an overcurrent.

Technical Specifications

• Item Fuse
• Amps 40 A
• AC Voltage Rating 300V AC
• DC Voltage Rating 160V DC
• Class T
• Series JJN
• Visual Indication Nonindicating
• Speed Fast Acting
• Body Style Cylindrical
• Fits Fuse Block Style Nonrejection
• Interrupt Rating 200kA at 300V AC, 20kA at 160V DC
• Fuse Size 7/8 in L x 9/16 in dia
• Length 7/8 in
• Diameter 9/16 in
• Equivalent Brand and Series Bussmann JJN, Edison TJN, Littelfuse JLLN, Mersen A3T
• Equivalent Series A3T, JJN, JLLN, TJN
• Compatible Fuse Block Series 1B, 1BS, T300, T301, T302, T306
• Body Material Melamine
• Element Single
• Standards CE/UL-248-15 Guide JDDZ/CSA Class 1422-02

Manufacturer Details

• Manufacturer: Bussmann
• Condensed Mfg Number: JJN40
• MPN: JJN-40

Label Details

• Hazardous Material: N
• Green Material Flag: N
• Country of Origin: MX
• CA Prop 65 Wht Label: N

Classification Details

• Harmonization Code: 8536100040
• GDS Category Name: Class T Fuses
• GDS Family Name: Fuses
• GDS Segment Name: Electrical
• UNSPSC: 39121608
• UNSPSC Class ID: 16
• UNSPSC Commodity Name: Circuit protection devices and accessories
• UNSPSC Commodity ID: 08
• UNSPSC Commodity Name: Class type fuses
• UNSPSC Family ID: 12
• UNSPSC Family Name: Electrical equipment and components and supplies
• UNSPSC Segment ID: 39
• UNSPSC Segment Name: Electrical Systems and Lighting and Components and Accessories and Supplies

Shipping Details

• Not For Sale In: HI AK PR