website

Victron Cyrix-i Intelligent Battery Combiner 24/48V-400A

Trend-Based Switching, Zero Voltage Loss & Emergency Start Assist


Notify me when available

You have already submited form for Default Title

Thanks for contacting us. We'll get back to you as soon as product / variant is back in stock.
-1

DESCRIPTION

Advanced 400A Battery Combining for 24V and 48V Systems

The Victron Cyrix-i is a heavy-duty, microprocessor-controlled battery combiner designed to safely and efficiently manage multi-battery configurations. Ideal for marine vessels, large off-grid power setups, and commercial vehicles, this robust 400A relay automatically connects batteries in parallel when one has reached a preset charge voltage, and disconnects them when the voltage drops below the float level.

Unlike traditional diode isolators, the Cyrix-i introduces virtually no voltage drop. This critical efficiency eliminates the need to increase the output voltage of alternators or battery chargers, ensuring maximum power delivery. The unit automatically detects either 24V or 48V system voltages, making it a highly versatile component for demanding electrical architectures.

Intelligent Trend-Based Monitoring

Standard battery combiners often struggle with short, high-current loads, disconnecting batteries prematurely if the system voltage dips temporarily. Conversely, they might fail to connect a heavily discharged battery bank because the sudden inrush current instantly pulls the voltage below the disengage threshold. The Cyrix-i solves these issues using intelligent software that monitors general voltage trends rather than reacting to sudden spikes or drops. It will only reverse a switching action if a voltage trend has reversed over a specified time period, which dynamically adjusts based on the severity of the voltage deviation. Installers can also select from four distinct switch timing profiles to suit specific system parameters.

Bidirectional Sensing and Priority Charging

In typical setups, the alternator connects directly to the starter battery. The auxiliary battery, along with heavy loads like bow thrusters, connects to the starter battery via the Cyrix combiner. The system prioritises the starter battery, only engaging parallel charging for auxiliary banks once the primary battery is adequately charged.

Featuring bidirectional voltage sensing, the unit also engages if the auxiliary battery receives a charge from an independent source, such as a solar array or mains battery charger. A dual power supply ensures the internal relay remains operational even if one battery's voltage drops significantly. To prevent unexpected activation during maintenance, fail-safes prevent engagement if connection voltages fall below critical levels (below 4V for 24V systems, or 8V for 48V systems).

Built for Emergency Preparedness

For critical situations where a starter battery is heavily depleted or damaged, the system includes an emergency parallel connection feature. This start assist function can be triggered manually via a push button or remote switch, locking the relay closed for 30 seconds to allow engine starting directly from the house or auxiliary battery bank.

Hardware Built for Professional Installations

The physical design features heavy-duty metal studs to securely accommodate large gauge battery cables, sustaining optimal current flow under peak 400A loads. A front control connector allows for easy integration of the start assist trigger, while an integrated multi-colour status LED provides clear operational monitoring. Side-mounted auxiliary micro switch contacts are also included for remote status tracking.

Key Features

  • Auto-ranging capability detects 24V and 48V system voltages automatically
  • Zero voltage loss design outperforms traditional diode isolators
  • Intelligent trend-based monitoring prevents unwanted nuisance switching
  • Bidirectional sensing allows for charging and voltage detection from either connected battery
  • Emergency start assist function enables manual parallel connection for engine starting
  • Four selectable switch timing profiles for tailored system integration
  • Heavy-duty terminals and an integrated mounting bracket ensure a secure, robust installation

Complete Your Power System

Ensure your auxiliary and starter batteries are always properly managed and ready for heavy loads. Add the Victron Cyrix-i 400A Intelligent Battery Combiner to your 24V or 48V electrical system today to experience seamless, high-efficiency power distribution.


SKU: Vic-CYR020400000

SPECIFICATIONS

Specifications

ModelCyrix-i 24/48-400
System Voltage24/48 V Auto Ranging
Continuous Current400 A
Peak Current2000 A During 1 Second
Input Voltage16-72 VDC
Voltage LossVirtually No Voltage Loss
Current Consumption When Open4 mA
Emergency StartYes, 30 s
Micro Switch For Remote MonitoringYes
Status IndicationBicolour LED
Weight0.9 kg (2.0 lb)
Dimensions (H x W x D)78 x 102 x 110 mm (3.1 x 4.0 x 4.4 in)

SKU: Vic-CYR020400000
Barcode: 8719076022305
Model #: CYR020400000
MPN: CYR020400000

WARRANTY

Victron Energy Limited Warranty Policy

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 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 end user, with a maximum of 30 months from the Victron Energy invoice date, Lithium-ion batteries; 3 years from date of purchase by the end user. In addition to this proof of correct battery usage is required when making a battery warranty claim.

During this period, Victron Energy will, at its option, repair or replace 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: • Reverse of battery polarity. • Inadequate connection. • Mechanical shock or deformation. • Contact with liquid or oxidation by condensation. • Use in inappropriate environment (dust, corrosive vapor, humidity, high temperature, biological infestation...). • Breakage or damage due to lightning. • Connection terminals and screws destroyed or other damages, like overheat, due to insufficient tightening. • For any electronical breakage except due to lightning (reverse polarity, over‐voltage due to external cause), the state ofthe internal control diode and of the inputs/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 else than Victron Energy or one of its authorized Qualified Service Partners. In order to qualify for the warranty, the product must not be disassembled or modified.

Repair or replacement are our sole remedies and Victron Energy shall not be liable for damages, whether direct, incidental,special, or consequential, even caused by negligence or fault.

Victron Energy owns all parts removed from repaired products. Victron Energy uses new or reconditioned parts made by various manufacturers in performing warranty repairs and building replacement products. If Victron Energy repairs or replaces a part of a product, its warranty term is not extended. In case of replacement the new component has a warranty of 6 months, without effect on the initial warranty period. All remedies and the measure for damages are limited to the above. Victron Energy shall in no event be liable for consequential, incidental, contingent orspecial damages, even if having been advised of the probability of such damages. Any and all other warranties expressed or implied arising by law, course of dealing, course of performance, usage of trade or otherwise, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited in duration to a period of two (2) years from the date of purchase.

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 the Victron Energy's product can be reasonably expected to cause 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.

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

Warranty on Repairs The warranty period on products or on printed circuits boards repaired by Victron Energy as well as on printed circuit boards for replacement is 6 months from delivery 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 set out above 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 remaining.

For Australia only Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

Exotronic provides high-quality products and solutions tailored for B2B and commercial customers, including commercial businesses, caravan manufacturers, marine electricians, OEMs, as well as emergency services, and more.

Register Here

RECENTLY VIEWED PRODUCTS

Loading...

What are you looking for?

Shipping Calculator