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Victron Cyrix-Li-Intelligent Load Relay 12/24V-120A

120A Smart Disconnect for VE.Bus BMS LiFePO4 Protection


Regular price $100.45
$123.20
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Victron Cyrix-Li intelligent load relay for 12V and 24V systems with 120A rating

Victron Cyrix-Li-Intelligent Load Relay 12/24V-120A

DESCRIPTION

Victron Cyrix-Li 120A Load Relay: Advanced LiFePO4 Protection

The Victron Cyrix-Li-load 12/24V-120A is an intelligent, heavy-duty relay designed specifically to protect Victron LiFePO4 batteries from damaging deep discharge. While Victron lithium batteries feature integrated cell balancing, a robust second line of defence is essential for long-term battery health. Working seamlessly with the Victron VE.Bus BMS, this load relay automatically disconnects non-smart loads when cell undervoltage is imminent, ensuring your expensive lithium bank remains safe from permanent degradation.

Intelligent Load Management via VE.Bus BMS

In advanced power systems found in caravans, marine vessels, and remote off-grid setups, not all connected loads can be directly controlled by a Battery Management System. The Cyrix-Li-load bridges this critical gap. When the VE.Bus BMS detects an unsafe drop in individual cell voltage, the control input to the Cyrix becomes free-floating. The relay immediately disengages, cutting power to the heavy loads before the battery reaches a critical state.

Once the battery voltage recovers, which typically occurs after the load is removed or a charging cycle begins, the BMS output resets. The Cyrix-Li-load is programmed to wait 30 seconds before re-engaging to prevent rapid, erratic cycling. If it makes three attempts to reconnect without success, it will remain locked open until the battery voltage rises above 13V for 12V systems, or 26V for 24V systems, for at least 30 seconds, confirming that a sustained recharge is actively underway.

Addressing Transient Voltages and System Safety

When disconnecting heavy loads rapidly under fault conditions, significant voltage spikes can occur. This intelligent relay includes advanced internal circuitry to manage these electrical transitions safely. By cleanly severing the connection to demanding appliances, it protects both the lithium battery cells and the sensitive electronics connected to your broader DC distribution network.

Understanding the Cyrix-Li Range

Victron manufactures several versions of the Cyrix-Li relay to perform highly specific tasks within a LiFePO4 ecosystem. While the Cyrix-Li-Charge governs charging sources and the Cyrix-Li-ct handles battery combining, the Cyrix-Li-load is exclusively dedicated to output protection. This strict separation of duties ensures that if an overvoltage event stops your charge cycle, your critical loads can remain powered, and vice versa. Selecting the correct purpose-built relay ensures your VE.Bus BMS functions exactly as intended without compromise.

Key Features

  • Automatic Voltage Detection: Smart 12V and 24V auto-ranging capability for simplified system integration.
  • High Current Capacity: Rated for up to 120A continuous load handling for demanding equipment.
  • Direct VE.Bus BMS Integration: Responds instantly to BMS signals to prevent catastrophic cell undervoltage.
  • Anti-Cycling Logic: Built-in 30-second delay and specific voltage thresholds prevent rapid on/off switching.
  • Heavy-Duty Terminals: Equipped with robust M8 threaded bolt terminals for highly secure, low-resistance connections.
  • Fail-Safe Protection: Disengages immediately if the control input becomes disconnected or free-floating.

Secure Your Power System Today

Ensure the longevity and reliability of your Victron lithium battery bank by integrating the correct protection devices. Upgrade your power management system with the Victron Cyrix-Li Intelligent Load Relay and safeguard your off-grid energy storage.


SKU: Vic-CYR010120450

SPECIFICATIONS

Specifications

ModelCyrix-Li-load 12/24-120
Continuous / Breaking Capacity At 12 V Or 24 V120 A
Breaking Capacity At 48 V40 A
Control Input BehaviourEngages when the control input is high (approximately battery voltage); disengages when the control input is free floating or pulled low.
Open-State Current Draw<4 mA
Protection RatingIP54
Weight0.11 kg (0.24 lbs)
Dimensions (H x W x D)46 x 46 x 80 mm (1.8 x 1.8 x 3.2 in)

SKU: Vic-CYR010120450
Barcode: 8719076022190
Model #: CYR010120450
MPN: CYR010120450

WARRANTY

Victron Energy Limited Warranty Policy

Direct Customers

Victron Energy provides the following warranty to any direct customer (OEM, distributor or dealer) in relation to any products that Victron Energy has directly sold to the direct customer. This warranty is not an end-user warranty between Victron Energy and an end-user, and end-users shall not have any rights or remedies under this limited warranty towards Victron Energy directly. The direct customer shall, in turn, ensure that the end-user is provided with a warranty identical to this warranty, subject to applicable local mandatory law.

End-Users

Victron Energy may also provide a warranty directly to end-users, in which case the below warranty conditions equally apply to such warranty. In that case, end-users shall claim their warranty at their place of purchase or through the original direct customer of Victron, which can be found through the support section on Victron’s website https://www.victronenergy.com/support. Hence, the direct customer shall on behalf of Victron Energy deal with any warranty claims made under any warranty that Victron Energy may provide directly to end-users. This support section on Victron’s website https://www.victronenergy.com/support will provide further guidance on the procedure for end-users to make a claim under this limited warranty.

If the end-user is a consumer – a natural person who is acting for purposes which are outside that person's trade, business, craft or profession – the following applies. The rights and remedies granted to the consumer under this limited warranty are without prejudice to the consumer’s statutory rights. Furthermore, the consumer is entitled by law to remedies from the seller free of charge in the event of a lack of conformity of the goods (such as repair, replacement, price reduction or rescission), which remedies are not affected by this limited warranty.

Warranty

Victron Energy warrants its products to be free from defects in workmanship and materials for a period of 5 years from the date of purchase by the original end-user, with a maximum of 66 months from the Victron Energy invoice date. Exceptions on this are: lead-acid batteries: 2 years from date of purchase by the original end-user, with a maximum of 30 months from the Victron Energy invoice date, Lithium batteries: 3 years from date of purchase by the original end-user, with a maximum of 42 months from the Victron Energy invoice date. In addition to this, proof of correct battery usage is required when making a battery warranty claim.

For a 10% surcharge on the current net price for products that came with a 5-year warranty, an additional 5 years of warranty can be purchased by Victron’s direct customers, bringing the total warranty to 10 years. Warranty extensions need to be applied for ultimately one year before the expiration of the original term. Victron may ask proof that the product was still functional at the time of purchase of the extended warranty.

During the warranty period, Victron Energy will, at its discretion, repair, replace or (partly) credit the defective product free of charge. The warranty does not include performing or reimbursing de‐installation, transportation, and re‐installation.

This warranty will be considered void if the unit has suffered any physical damage or alteration, either internally or externally, and does not cover damages arising from improper use like:

  • Reversed battery polarity.
  • Inadequate connection.
  • Mechanical shock or deformation.
  • Contact with liquid or oxidation by condensation.
  • Use in an inappropriate environment (dust, corrosive vapour, humidity, high temperature, biological infestation, etc.).
  • Breakage or damage due to lightning.
  • Connection terminals and screws destroyed or other damages, like overheating, due to insufficient tightening.
  • For any electronic breakage except due to lightning (reverse polarity, over‐voltage due to external cause), the state of the internal control diode and/or the input/output X and Y capacitors determine the warranty.

This warranty will not apply where the product has been misused, neglected, improperly installed, or repaired by anyone other than Victron Energy or one of its authorized Repair Centres. In order to qualify for the warranty, the product must not be disassembled or modified.

This warranty and our warranty obligations thereunder (repair, replacement or credit) are the direct customer’s and, if applicable, the end-user’s sole rights and remedies and our sole obligations with respect to any defective and/or non-conforming product or breach of warranty and is subject to and without prejudice to the limitations of liability in this warranty.

Victron Energy shall not be liable for damages, whether direct, incidental, special, or consequential, even caused by negligence or fault.

As a product requires service, it must be brought back to the place of purchase. In case no contact can be made with the merchant, or if he is either unable or not allowed to provide service, direct contact should be made with Victron Energy through the support section on Victron’s website.

In case Victron Energy replaces a product, it will own the replaced product. Victron Energy owns all parts removed from repaired products. Victron Energy uses new or reconditioned parts made by various manufacturers when performing warranty repairs or building replacement products.

If Victron Energy repairs or replaces a part of a product, its warranty term is not extended: the warranty will apply for the remaining term of the original warranty term. For example, if Victron Energy replaces a product with a 5-year warranty after 3 years, the warranty of this product will apply for another 2 years, with a minimum of 6 months.

All remedies and the measure for damages are limited to the above. Victron Energy shall in no event be liable for consequential, incidental, contingent or special damages, even if having been advised of the probability of such damages.

The foregoing limited warranty provided by Victron Energy is in lieu of any other warranties, express or implied arising by law, course of dealing, course of performance, usage of trade or otherwise, of any kind whatsoever including, without limitation, warranties of merchantability or fitness for a particular purpose, with respect to any product. The above is without prejudice to the arrangement for consumers detailed above.

Life Support Policy

As a general policy, Victron Energy does not recommend the use of any of its products in life support applications where failure or malfunction of Victron Energy's product can be reasonably expected to cause the failure of the life support device or to significantly affect its safety or effectiveness. Victron Energy does not recommend the use of any of its products in direct patient care. Victron Energy will not knowingly sell its products for use in such applications unless it receives in writing assurances satisfactory to Victron Energy that the risks of injury or damage have been minimized, the customer assumes all such risks, and the liability of Victron Energy is adequately protected under the circumstances.

Warranty on repairs for products outside their warranty period

The warranty period on products that are outside their warranty period and have been repaired by Victron Energy or one of the Victron Energy Repair centres is six (6) months from delivery. The same applies to spare parts and circuit boards that have been supplied or repaired by Victron Energy.

Transport

It is the responsibility of the sender to sufficiently package these products. The transport must be organized in a way to avoid any damage, especially when a single unit or heavy unit is sent.

Severability

If a part of the terms and conditions of this warranty is held invalid, void or unenforceable due to any particular national or international legislation, it shall not affect other parts of the terms and conditions of this warranty.

Applicable law

This warranty is exclusively governed by the laws of the Netherlands, to the exclusion of the UN Convention on Contracts for the International Sale of Goods.

Contact details

Victron Energy B.V. | De Paal 35, 1351 JG Almere, The Netherlands | https://www.victronenergy.com/support

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