Blue Sea Class-T-Sicherung (T-Fuse) 225–400 A
Blue Sea Systems · High current protection
Blue Sea Class T fuses 225–400 A
The Blue Sea Systems Class T fuses (also called T-fuses) BS 5117 to BS 5121 protect electrical systems with large lithium-ion and TPPL battery banks and inverters at 225 to 400 A. With an interrupting capacity of 20,000 A at 125 V DC, they reliably disconnect even extremely high short-circuit currents. We recommend the matching fuse holder BS 5502100, available from philippi in Remseck am Neckar, Germany.
In detail. Blue Sea Class T fuses 225–400 A.
- Five ratings: 225, 250, 300, 350 and 400 A
- Interrupting capacity 20,000 A at 125 V DC, listed to UL 248-15
- For lithium-ion and TPPL battery banks and inverters with very high short-circuit currents
- The matching holder BS 5502100 is offered directly with every rating
Versions.
| Version | Order no. |
|---|---|
| BS 5117 (225 A) | 7 0012 5117 |
| BS 5118 (250 A) | 7 0012 5118 |
| BS 5119 (300 A) | 7 0012 5119 |
| BS 5120 (350 A) | 7 0012 5120 |
| BS 5121 (400 A) | 7 0012 5121 |
Technical data
| Feature | Value |
|---|---|
| Ratings | 225, 250, 300, 350, 400 A |
| Interrupting capacity | 20,000 A at 125 V DC |
| Max. operating voltage | 125 V DC |
| Approval | UL 248-15 |
| Matching holder | BS 5502100 (order no. 7 0100 5502), studs 5/16"-18 (Ø 8 mm), stud spacing 47 mm |
Manufacturer and product safety
Navico Group Americas LLC (Marke Blue Sea Systems)
N85 W12545 Westbrook Crossing
Menomonee Falls, WI 53051
USA
www.bluesea.com/contact
Safety information: see the operating manual and data sheet.
Frequently asked questions. Answered briefly.
Which fuse holder fits 225 to 400 A?
The fuse holder BS 5502100 is intended for the Class T fuses BS 5117 to BS 5121. It is rated for 125 V DC, ignition-protected to ISO 8846 and SAE J1171 and supplied with cover but without fuse. The studs are 5/16"-18 (Ø 8 mm) with a stud spacing of 47 mm. The shop also offers a holder with M10 studs.
What are Class T fuses used for?
Class T fuses are preferably used to protect lithium-ion batteries, because these can deliver extremely high currents in a short circuit. With an interrupting capacity of 20,000 A at 125 V DC, the fuse still disconnects reliably and protects cables and loads. Most inverter manufacturers recommend them.
Which ratings are available outside 225 to 400 A?
philippi offers Class T fuses in three groups, each with its own holder: 110 to 200 A with holder BS 5007100, 225 to 400 A with holder BS 5502100 and 450 to 600 A with holder 778-T2S-600 B. We are happy to help you choose the right rating for your electrical system.
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