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Class T battery protection kit for 5kW to 20kW hybrid inverters with Victron Lynx Class-T, 20,000A fuses, cable and lugs for 1-4 batteries in parallel
Class T battery protection kit for 5kW to 20kW hybrid inverters with Victron Lynx Class-T, 20,000A fuses, cable and lugs for 1-4 batteries in parallel
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€186.29
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€186.29
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- European Union: 60 € per order, with no threshold
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Class T battery protection kit
The DC side of a 48V storage system, protected with the reference fuse of lithium banks
Victron Lynx Class-T Power In · Class T fuses 20,000A · cable and lugs
This kit contains the protection devices and the wiring only: the inverter and the batteries you already have, or buy separately. You pick the inverter size and how many 48V batteries go in parallel, and the right material arrives, already sized.
It is the professional version of our protection kit: instead of MEGA fuses it carries Class T, the only fuse in this class with a declared DC interrupting rating, 20,000A. That is why Class T is the standard on LiFePO4 banks in marine and professional off-grid work: a lithium battery in short circuit delivers thousands of amperes, and on DC the arc does not self-extinguish the way it does on AC.
How it is built: the heart of it is the Victron Lynx Class-T Power In, a module of the Lynx system with a 1000A M10 busbar and two positions for Class T fuses. The modules bolt to each other into one continuous bar, so when more than two positions are needed another one is added alongside. With a single battery on a single-input inverter the busbar is not needed: the kit then contains an in-line Class T fuse holder.
What each configuration contains
↔ swipe the table sideways
| Inverter | 1 battery | 2 batteries | 3 batteries | 4 batteries |
|---|---|---|---|---|
| 5-6kW 1 input · 50mm² | 1× Class T fuse holder 1× Class T fuse 250A | 2× Lynx Class-T 2× Class T fuse 250A (battery side) 1× Class T fuse 250A (inverter side) 2× 50mm² cable 4× 50mm² lugs | 2× Lynx Class-T 3× Class T fuse 250A (battery side) 1× Class T fuse 250A (inverter side) 2× 50mm² cable 4× 50mm² lugs | 3× Lynx Class-T 4× Class T fuse 250A (battery side) 1× Class T fuse 250A (inverter side) 2× 50mm² cable 4× 50mm² lugs |
| 8kW 1 input · 70mm² | 1× Class T fuse holder 1× Class T fuse 250A | 2× Lynx Class-T 2× Class T fuse 250A (battery side) 1× Class T fuse 250A (inverter side) 2× 70mm² cable 4× 70mm² lugs | 2× Lynx Class-T 3× Class T fuse 250A (battery side) 1× Class T fuse 250A (inverter side) 2× 70mm² cable 4× 70mm² lugs | 3× Lynx Class-T 4× Class T fuse 250A (battery side) 1× Class T fuse 250A (inverter side) 2× 70mm² cable 4× 70mm² lugs |
| 10kW 1 input · 70mm² | 1× Class T fuse holder 1× Class T fuse 250A | 2× Lynx Class-T 2× Class T fuse 250A (battery side) 1× Class T fuse 250A (inverter side) 2× 70mm² cable 4× 70mm² lugs | 2× Lynx Class-T 3× Class T fuse 250A (battery side) 1× Class T fuse 250A (inverter side) 2× 70mm² cable 4× 70mm² lugs | 3× Lynx Class-T 4× Class T fuse 250A (battery side) 1× Class T fuse 250A (inverter side) 2× 70mm² cable 4× 70mm² lugs |
| 12kW 1 input · 95mm² | 1× Class T fuse holder 1× Class T fuse 250A | 2× Lynx Class-T 2× Class T fuse 250A (battery side) 1× Class T fuse 300A (inverter side) 2× 95mm² cable 4× 95mm² lugs | 2× Lynx Class-T 3× Class T fuse 250A (battery side) 1× Class T fuse 300A (inverter side) 2× 95mm² cable 4× 95mm² lugs | 3× Lynx Class-T 4× Class T fuse 250A (battery side) 1× Class T fuse 300A (inverter side) 2× 95mm² cable 4× 95mm² lugs |
| 14-16kW 2 inputs · 2×50mm² | 2× Lynx Class-T 1× Class T fuse 250A (battery side) 2× Class T fuse 250A (inverter side) 1× 4-cable set 50mm² | 2× Lynx Class-T 2× Class T fuse 250A (battery side) 2× Class T fuse 250A (inverter side) 1× 4-cable set 50mm² | 3× Lynx Class-T 3× Class T fuse 250A (battery side) 2× Class T fuse 250A (inverter side) 1× 4-cable set 50mm² | 3× Lynx Class-T 4× Class T fuse 250A (battery side) 2× Class T fuse 250A (inverter side) 1× 4-cable set 50mm² |
| 18-20kW 2 inputs · 2×70mm² | 2× Lynx Class-T 1× Class T fuse 250A (battery side) 2× Class T fuse 250A (inverter side) 4× 70mm² cable 8× 70mm² lugs | 2× Lynx Class-T 2× Class T fuse 250A (battery side) 2× Class T fuse 250A (inverter side) 4× 70mm² cable 8× 70mm² lugs | 3× Lynx Class-T 3× Class T fuse 250A (battery side) 2× Class T fuse 250A (inverter side) 4× 70mm² cable 8× 70mm² lugs | 3× Lynx Class-T 4× Class T fuse 250A (battery side) 2× Class T fuse 250A (inverter side) 4× 70mm² cable 8× 70mm² lugs |
One thing about sizes. Class T fuses come in two mechanically different and non-interchangeable formats: 110-200A have an M8 hole and 42.86mm centres, 225-400A a 10mm hole and 46.7mm centres. Only the 225-400A fit the Lynx Class-T Power In, and those are the ones we put in the kits. The 160A that many people look for does not exist in this family.
How to pick the size
Count the number of battery inputs on the inverter, not just the kW: inverters up to roughly 12kW have one positive and one negative, those from 14kW upwards almost always have two and need two pairs of cables. The cable size shown is the one the manuals prescribe for that current.
↔ swipe the table sideways
| Inverter size | Typical battery current | Battery inputs | Cable size |
|---|---|---|---|
| 5-6kW | up to 135A | 1 | 50mm² |
| 8kW | about 190A | 1 | 70mm² |
| 10kW | about 210A | 1 | 70mm² |
| 12kW | about 240A | 1 | 95mm² |
| 14-16kW | 260A to 300A | 2 | 2×50mm² |
| 18-20kW | 330A to 350A | 2 | 2×70mm² |
MEGA, Class T or NH: which fuse to choose
The same kit exists in three versions. This is the Class T one.
↔ swipe the table sideways
| Victron MEGA 80V | Class T | NH gPV 1000V DC | |
|---|---|---|---|
| Rated DC voltage | 80V | 125V fuse / 160V holder | 1000V |
| DC interrupting rating | not declared by the manufacturer | 20,000A | 20kA |
| Connection | direct M8 bolt, 50.8mm centres | 3/8" studs (225-400A) or M8 (110-200A) | knife contacts: the cable lands on the base, not on the fuse |
| Busbar | Victron Lynx Distributor, 4 positions with LEDs | Victron Lynx Class-T Power In, 2 positions | unfused Victron Lynx Power In plus separate NH bases |
| Maximum cable size | limited by the M8 stud | up to 120mm² on the M10 busbar | up to 300mm² with the PK3 base |
| Kit price | 19.80€ to 568.52€ | 186.29€ to 1,069.10€ | 218.54€ to 2,090.46€ |
| When to choose it | residential and small commercial on the Lynx busbar | large LiFePO4 banks, marine and professional off-grid | industrial switchboards, inspectable isolation, heavy cable |
Two things worth knowing: the cables that run from each battery to the busbar are almost always supplied with the battery itself, so they are not included; if you do need them we will add them, just say so. The kit covers the DC side: the PV array DC board, the AC board and the earthing stay with the project.
Delivery
- Delivery in 10-20 days
- Shipping within Italy and the European Union
- If you are unsure which configuration you need, send us the inverter model and the battery model: we will tell you which kit to order