Description
xCurrent Transformer 100A:50mA for MultiPlus-II (1m) — CTR110000500
This current transformer is designed for use with the Victron MultiPlus-II inverter/charger. It provides accurate AC current measurement by converting up to 100A of AC current to a 50mA signal, allowing the MultiPlus-II to monitor grid or load current without direct high-current wiring into the monitoring circuit. The 1m cable length suits most standard installation configurations.
Key Features
- 100A:50mA ratio provides accurate, proportional current measurement across the full operating range.
- 1 metre cable length gives sufficient reach for most consumer unit and distribution board installations.
- Designed specifically for compatibility with the Victron MultiPlus-II inverter/charger range.
- Split-core or clamp-style form factor allows installation around an existing conductor without breaking the circuit.
- Lightweight at 55g, making it straightforward to position and secure within an enclosure.
- SKU CTR110000500 with GTIN 8719076044529 for verified product identification and traceability.
Product Overview
Current transformers are used in energy monitoring and power management applications where direct measurement of high AC currents is impractical or unsafe. This unit clamps around a live conductor and outputs a scaled-down 50mA signal proportional to the measured current, up to 100A. The MultiPlus-II uses this signal to track AC input or output current in real time, which is essential for accurate power management, grid interaction control, and energy monitoring via the GX ecosystem.
The 100A rating covers the typical single-phase load range found in residential and light commercial installations. Pairing this transformer with the MultiPlus-II enables features such as grid current limiting and ESS (Energy Storage System) control, where the inverter needs to know the actual current flowing at the grid connection point. Without accurate current measurement, these functions cannot operate correctly.
Technical Specifications
| Parameter | Value |
| SKU | CTR110000500 |
| Transformation Ratio | 100A : 50mA |
| Cable Length | 1 metre |
| Compatible Device | Victron MultiPlus-II |
| Weight | 55g |
| GTIN | 8719076044529 |
Applications
- Grid current monitoring in MultiPlus-II ESS (Energy Storage System) installations.
- AC input current limiting to prevent grid overload in residential battery storage systems.
- Single-phase energy monitoring in off-grid and hybrid solar installations using Victron GX devices.
- Retrofit current measurement in existing MultiPlus-II installations where grid sensing is required.
What Is Included
- 1x Current Transformer 100A:50mA with 1m cable (CTR110000500)
Installation Notes
This current transformer must be installed by a qualified electrician. It is intended for use on AC conductors within a consumer unit or distribution board, which involves working in proximity to live mains voltages. Ensure the MultiPlus-II is correctly configured to recognise the CT input before commissioning. For grid-connected systems in the UK, the installation must comply with G98 or G99 requirements as applicable. Do not exceed the 100A rated primary current.
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.