Description
xVictron Energy SolidSwitch 104
The SolidSwitch 104 is a solid-state load switching module designed for use with Victron Battery Management Systems. It provides a controlled, low-loss switching path for DC loads, replacing mechanical relays in BMS-controlled circuits. Suitable for professional battery system integrators and off-grid installers working with Victron BMS products.
Key Features
- Solid-state design eliminates mechanical relay wear, providing a longer service life in cycling applications.
- Controlled directly by Victron BMS output signals, allowing the BMS to disconnect loads under fault or low-voltage conditions.
- Compact and lightweight at 32.5 g, suitable for installation in space-constrained enclosures.
- Low on-state resistance reduces heat generation and power loss compared to conventional relay switching.
- Compatible with Victron BMS product range for use in lithium battery systems requiring load disconnection control.
Product Overview
The SolidSwitch 104 acts as the switching interface between a Victron BMS and a DC load circuit. When the BMS detects an out-of-range condition (such as over-voltage, under-voltage or over-temperature), it signals the SolidSwitch 104 to open the load circuit, protecting the battery from damage. This is a standard protection architecture in lithium battery installations where load disconnection must be fast and reliable.
Unlike a mechanical relay, a solid-state switch has no moving parts and does not suffer from contact arcing or bounce. This makes it well suited to systems where the BMS may switch loads frequently, or where vibration is a factor. The module is wired directly into the load output path and controlled via the BMS load disconnect signal line.
Specifications
- SKU: BMS800200104
- GTIN: 8719076055556
- Weight: 32.5 g
Applications
- Load disconnection control in Victron BMS-managed lithium battery systems.
- Off-grid and mobile power systems requiring solid-state load switching.
- Marine and vehicle installations where vibration makes mechanical relays unreliable.
- Battery protection circuits in custom enclosures and professional battery builds.
What Is Included
- 1 x Victron Energy SolidSwitch 104 module
Installation Notes
The SolidSwitch 104 must be installed by a qualified electrician or experienced battery systems integrator familiar with Victron BMS wiring. It is intended for use within a correctly designed BMS load disconnect circuit and should not be used outside its rated parameters. Lithium battery systems carry significant energy and must be installed in accordance with applicable wiring regulations. Consult the Victron BMS documentation for correct wiring of the load disconnect signal and load output connections.
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:
- Non-faulty items returned after 14 days and/or not in their original, undamaged packaging can only be exchanged for store credit - 15% off the items returned.
- 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.