Energy Solutions
Class T Fuse 400AMP
£70.80
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BS/5121
Fast-acting 400A Class T DC fuse with a high interrupting rating, for lithium and high-current marine power systems.
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Collection or delivery in 1-2 weeks
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The Class T Fuse 400A is a fast-acting, extremely current-limiting DC fuse for high-current battery and marine power systems. Class T fuses are the recommended main protection for lithium battery banks and other systems capable of very high fault currents, because they interrupt a short circuit quickly and safely. This fuse uses the JLLN-400A element in the compact 225 to 400A body size.
The 225 to 400A body fits Victron Lynx Class T holders and other standard Class T bases, making it a straightforward main or inverter fuse. It carries a 200 kA interrupting rating and is less than a third of the size of a comparable Class R fuse, so it protects inverters, converters and distribution without taking up excessive space.
PRODUCT DETAILS
- Fast-acting Class T fuse rated 400A
- High 200 kA interrupting rating
- Extremely current-limiting, compact design
- Recommended main protection for lithium battery banks
- 225 to 400A body size fits Victron Lynx Class T holders
- Ideal for inverter, converter and main DC circuits
- Much smaller than an equivalent Class R fuse
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Key specifications
| Fuse class | Class T (fast-acting) |
| Rated current | 400A |
| Interrupting rating | 200 kA |
| Element | JLLN-400A |
Physical & mechanical
| Body size | 225 to 400A body |
| Compatibility | Fits Victron Lynx Class T holders |
General
| Brand | Energy Solutions |
| Part number | BS/5121 |
| Country of origin | United States |
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Why use a Class T fuse for a lithium battery?
Lithium banks can deliver very high fault currents. Class T fuses are fast-acting with a high interrupting rating (200 kA here), so they clear a short circuit quickly and safely, which is why they are the recommended main fuse for lithium systems.
Will this fuse fit a Victron Lynx Class T?
Yes. It uses the 225 to 400A Class T body size, which fits Victron Lynx Class T holders and other standard Class T bases.
What does the 400A rating mean?
It is the continuous current the fuse will carry without blowing. Choose a rating above your system maximum continuous load but within the cable capacity.
