Cooper Bussmann T-Tron® JJN Series Fuses
Very Fast-Acting, Current-Limiting Fuses
CB-JJN-60
What's special about these fuses?
- Compact size allows for installation in panel boards and control centers . Excellent choice for system upgrading when current circuit breakers are not able to safely interrupt larger available short-circuit currents
- T-Tron® fuses offer a broad range of coverage, independent of breaker manufacturer
- Class T fuses provide current limitation for non-inductive circuits to maximum ground fault and short-circuit conditions
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The most important component of the fuse is the element. This is generally made of a high conductivity material such as pure copper, silver-plated copper or even silver. The T-Tron® is a very fast acting fuse which is equipped with a silver element for high current limiting ability.
| Part # | Amps | Dimensions | Weight | Price |
|---|---|---|---|---|
| CB-JJN-60 | 60A | 0.88"Lx 0.56"D | 0.1 lb. | Manufacturer Direct |
| CB-JJN-150 | 150A | 2.44"L x 0.88"D | 0.15 lb. | |
| CB-JJN-200 | 200A | 2.44"L x 0.88"D | 0.3 lb. | |
| CB-JJN-300 | 300A | 2.75"L x 1"D | 0.3 lb. | |
| CB-JJN-400 | 400A | 2.75"L x 1"D | 0.25 lb. | |
| CB-JJN-600 | 600A | 3.06"L x 1.25"D | 0.3 lb. | |
| CB-JJN-800 | 800A | 3.38"L x 1.75"D | 0.85 lb. | |
| CB-JJN-1200 | 1200A | 4"L x 2"D | 1.45 lbs. |
- 200,000A interrupting rating provides high ratings at all circuit locations so, no matter where this fuse is placed, the equipment is protected from electrical surge
- Space-saving fuses offers a high degree of current limitation on short-circuits for unbeatable component protection
- High speed of response for semiconductor protection
- UL, CSA, CE rated
Ratings:
- UL Listed–Cartidge Fuses, Nonrenewable, Guide JDDZ, File E4273 (PDF)
- CSA Certified, Class 1422-02 HRC Type, File 53787C00 (PDF)
- GE Series Rating Chart (PDF)
- Siemens Rating Chart (PDF)
Typical Applications:
- Large apartment complexes
- Multi-family meter stacks
- VFD line protection
- Electric heat circuits
- Load centers
- Disconnect switches
- Meters
- JJN Datasheet (PDF)
| PART # | Maximum AC Voltage | Amperage Rating | AC Interrupting Ratings | Fuse Class | Fast Acting | Size |
| CB-JJN-60 | 300 | 60A | 200000 at 300V | Class T | Yes | 0.88"L x 0.56"D |
| CB-JJN-125 | 300 | 125A | 200000 at 300V | Class T | Yes | 2.44"Lx 0.88"D |
| CB-JJN-150 | 300 | 150A | 200000 at 300V | Class T | Yes | 2.44"L x 0.88"D |
| CB-JJN-200 | 300 | 200A | 200000 at 300V | Class T | Yes | 2.44"L x 0.88"D |
| CB-JJN-300 | 300 | 300A | 200000 at 300V | Class T | Yes | 2.75"L x 1"D |
| CB-JJN-400 | 300 | 400A | 200000 at 300V | Class T | Yes | 2.75"L x 1"D |
| CB-JJN-600 | 300 | 600A | 200000 at 300V | Class T | Yes | 3.06"L x 1.25"D |
| CB-JJN-800 | 300 | 800A | 200000 at 300V | Class T | Yes | 3.38"L x 1.75"D |
| CB-JJN-1200 | 300 | 1200A | 200000 at 300V | Class T | Yes | 4"L x 2"D |
COMPARISON CHART -
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Questions & Answers
Time Curves of 300A - Hi the data sheet doesnt contain any curves for the 300A fuse. Can you please advise?
- Thank you for your question. The time curves chart is on the 2nd page of the data sheet.
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