SKU: 31814497638

Victron 5m 100A:50mA Current Transformer for MultiPlus-II

Sale price$57.49 Regular price$63.88
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

Victron 5m 100A:50mA Current Transformer for MultiPlus-IIVictron 100A: 50mA Split Core Current Transformer for MultiPlus II Precision External Current Sensing for Advanced Energy Management The Victron Current Transformer enables precise external current sensing for compatible MultiPlus II and MultiGrid II inverter charger systems. With a 100A: 50mA ratio, it provides the critical measurement data needed to implement PowerControl and PowerAssist features, preventing generator or shore power overload while

Victron 100A:50mA Split-Core Current Transformer for MultiPlus-II

Precision External Current Sensing for Advanced Energy Management

The Victron Current Transformer enables precise external current sensing for compatible MultiPlus-II and MultiGrid-II inverter-charger systems. With a 100A:50mA ratio, it provides the critical measurement data needed to implement PowerControl and PowerAssist features, preventing generator or shore power overload while maximising available AC power. It also optimises self-consumption by accurately monitoring grid import and export, allowing your system to make intelligent decisions about battery charging and load support.

Unlike generic current transformers, this unit is factory-calibrated with a fixed cable length of 5m to ensure measurement accuracy. The split-core design allows for quick, non-invasive installation around existing conductors without disconnecting wiring, reducing downtime and installation complexity. The cable is terminated with a standard 3.5 mm headphone jack for direct plug-and-play connection to the MultiPlus-II, eliminating the need for additional adapters or complex wiring.

Key Features

  • 100A:50mA transformation ratio for accurate current measurement
  • Split-core design for easy retrofitting without disconnecting cables
  • Factory-calibrated 5m cable ensures measurement precision
  • 3.5 mm jack for direct connection to MultiPlus-II and MultiGrid-II
  • Enables PowerControl and PowerAssist to prevent overload and optimise AC input
  • Supports self-consumption optimisation through external current sensing
  • Rugged construction for reliable performance in demanding environments

Reliable Performance for Critical Power Systems

Designed for single-phase monitoring, this current transformer measures current only, not voltage, and is intended for use with older MultiPlus-II units that require an external sensor for advanced functions. The robust housing and high-quality ferrite core ensure stable, repeatable measurements, reducing the risk of system errors caused by inaccurate current data. By providing real-time feedback to the inverter-charger, it helps protect your installation from unexpected power interruptions and improves overall energy efficiency.

Applications

This current transformer is essential for installations where the MultiPlus-II must dynamically manage AC input current, such as in marine, RV, and off-grid backup systems. It is particularly valuable when connected to a limited shore power supply or generator, where exceeding the available current could trip breakers or damage equipment. By enabling PowerAssist, the inverter can supplement the AC source with battery power during peak demand, ensuring uninterrupted operation of critical loads.

Installation Notes

The cable length is calibrated at the factory and must not be extended or shortened, as this will affect measurement accuracy. The split-core clamp simply opens and closes around the conductor, making it suitable for both new and retrofit installations. Ensure the core is fully closed and latched for reliable operation.

Take Control of Your Energy

Equip your MultiPlus-II system with the precision it needs to deliver reliable, efficient power management. Order the Victron Current Transformer today and unlock the full potential of your inverter-charger.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 31814497638

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4.8 ★★★★★
Based on 14 reviews
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M
Verified Purchase
Michael Cheng
Pawtucket, US
★★★★★ 1
Quality Control Issues
I want to like this dock, I really do. I purchased it with the intention of using it as a hub for my phone + usb-c external display. The pass-through charging never worked on this dock. Tried multiple cords and tested the dock with nothing plugged into any of the USB ports -- all of the power disappears somewhere onto the hub and the actual charge rate on my phone slows to a trickle. With nothing connected, it estimates >24hrs to charge from 30% to full. The plus side is that the usb ports do work, though the usb-c display went from 100% reliability to <50% within a few months of purchase. Extremely frustrating.
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Reviewed in the United States on September 24, 2024
B
Verified Purchase
bieb1234
Lake Worth, US
★★★★★ 5
This is the one, buy it for DeX!
Looking for a compact USB hub to connect your laptop or Samsung DeX capable device? Buy this one! I've tried multiple similar items from name brands, and they work fine as a USB and port hub, but this one is able to support power delivery and display data through a single (capable) USB-c cable. I assume because it is noted to be capable of some combo of USB 3.2, PD 3.0 pass through and DP 1.4 alt mode. I'm not quite sure which one(s) make it possible, but it works for an HP Spectre laptop and Galaxy phone. Only improvement suggestion is to add an additional 10gb capable USB-C port in place of the three USB-A ports, but that's being super picky. Thanks StarTech for building another unique solution for connectivity challenges.
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Reviewed in the United States on February 16, 2025
T
Verified Purchase
Trysta
Chelsea, US
★★★★★ 2
Usb-c passthrough started failing about a year into ownership.
This had the potential to be the perfect accessory for my M4 MacBook Air. It is very difficult to find dongles like this that support display passthrough via usb-c (meaning that if you have a usb-c display you can connect it to this and use the display). When it did work, I was able to power a triple monitor setup with my 2 port Macbook Air (with one display being driven by a displaylink adapter). If this product had continued to work as advertised, is would be a 5 star review. But after maybe a year of VERY sporadic use (I use this maybe once a week because my MacBook Air is not often docked) the usb-c passthrough is already failing. On a display I use every day with a different machine (a 16" MBP that has enough ports to not need any adapters) and the display and cable work perfectly fine there so I can only assume that it is this specific adapter which is failing. If I insert the connector several times, sometimes I can get it to work but my success rate just keeps dropping. There was no other reason to spend this much on an adapter that without usb-c passthrough offers just 3 usb-a ports like most much cheaper adapters. So to say I am disappointed is an understatement.
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Reviewed in the United States on May 30, 2026
C
Verified Purchase
Charlie Burnham
Fort Morgan, US
★★★★★ 4
Expensive, but it works
The good parts: Yup, this works with DP alt mode, single cable use works for most devices I tried (steam deck, laptop, odin mini 2) even without the hub powered through the power in on the hub, I even got it working without external power to either the hub or my small usb-c monitor. However, some devices like my phone likely didn't give enough power for it to work without another power source. On my phone it worked for some usb devices without external power, but the dp alt mode didn't do work. DP alt on my phone works just fine with external power connected to the hub. Powering it with a small but powerful power bank worked fine, but lower power power banks might not keep up especially if the monitor isn't getting it's own power. It only takes a watt or two of power for the hub itself from some quick and dirty measurements charging my laptop through the pd-in on the hub. As for the rest of it, the three usb 3 ports means you should be enough to get by for any use case, though you may need more dongles or adapters to get the type of connections you need, but quite usable as-is for a lot of purposes. Basically it does what it says, there really is no other hub currently that can do pd alt mode, only big docks which need power supplies. The ok parts: *When it isn't powered* I noticed that with a monitor already plugged in, plugging it into a device would lead to the monitor not being initialized. But plugging the hub into the device first before connecting the monitor worked. No issue when it was powered. You can use this to get display out and charge with a Nintendo switch, but if it's not powered through the pd-in it probably wont switch to TV mode and output video, not sure if that's because of power or software reasons. This is a nitpick, but if you care about the feel or aesthetic it's noticeably bland. The case is plastic and there seems to be no weighting on the inside, it's very light, which can feel cheap but it's not like adding weights would functionally make it better, the case also has a bit of a harsh feeling where it's joined, but it does feel solid and durable enough. It's clearly function over form, just barely meets the minimum bar imo. The bad part: You already saw, but the price is a bit steep for a hub (at $80). I'd love to see it at 60 or even 40 instead, I hope more similar hubs pop up for competition. In summary: It does what it says, if you know you want this and what it is then get it, I feel like it shouldn't cost this much, but it's quite usable and for now it's the only option for a DP alt mode hub. Minus a half star each for subpar presentation and price 4/5
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Reviewed in the United States on October 4, 2024
J
Verified Purchase
Jeffery Delia
Dallas, US
★★★★★ 5
Great for AR Glasses
This USB hub has been great for me! It's taken me so long to finally find a stable setup to allow using my XREAL Air glasses, peripherals, and charger at the same time. I've used this both with my phone and ROG Ally and I have not once had a problem. I even found that my ROG Ally manages to get the full supported PD of 65W, as long as I power the hub with a 100W PD charger. That said though, using a 65W PD charger is still more than adequate to charge the device while using various peripherals and a USB-C display. Previously I used USB-C hubs with HDMI out and another device to merge the HDMI output with a USB-A connection into a single USB-C cable that I use for my AR glasses. This setup worked, but would increasingly stutter/freeze the longer I used it forcing me to constantly unplug and re-plug it in. In trying to find a solution that didn't split and merge back the display signal with USB data/power, this hub was the only one I found that wasn't thunderbolt 3/4. I will say that I wish the cable to the host device was either longer and less rigid, or shorter with an optional extension cable. An ethernet port would have also been nice, but using up one of the USB-A ports with a USB ethernet adapter works if needed. Plus, if I wanted ethernet with it, then a dock would probably have been a better option over a hub anyway.
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Reviewed in the United States on December 29, 2023

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