SKU: 30545111259

Victron Cyrix 12/24-400a Combiner

Sale price$134.46 Regular price$149.40
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Victron Cyrix 12/24-400a CombinerIntelligent battery monitoring to prevent unwanted switching. Some battery combiners will disconnect a battery in case of a short but high amperage load. A battery combiner also may fail to connect a large but discharged battery bank because the DC voltage immediately drops below the disengage value once the batteries are connected. The software of the Cyrix i does more than simply connect and disconnect based on battery voltage and with a fixed time

Intelligent battery monitoring to prevent unwanted switching.

Some battery combiners will disconnect a battery in case of a short but high amperage load. A battery combiner also may fail to connect a large but discharged battery bank because the DC voltage immediately drops below the disengage value once the batteries are connected. The software of the Cyrix-i does more than simply connect and disconnect based on battery voltage and with a fixed time delay. The Cyrix-i looks at the general trend (voltage increasing or decreasing) and reverses a previous action only if the trend has reversed during a certain period of time. The time delay depends on the voltage deviation from the trend. In addition four switch timing profiles can be chosen.

12/24 V and 24/48 V auto ranging - The Cyrix-i automatically detects system voltage.

No voltage loss - Cyrix battery combiners are an excellent replacement for diode isolators. The main feature is that there is virtually no voltage loss so that the output voltage of alternators or battery chargers does not need to be increased.

Prioritizing the starter battery - In a typical setup the alternator is directly connected to the starter battery. The accessory battery and possibly also a bow thruster and other batteries are each connected to the starter battery with Cyrix battery combiners. When a Cyrix senses that the starter battery has reached the connect voltage it will engage to allow for parallel charging of the other batteries.

Bidirectional voltage sensing and power supply from both batteries - The Cyrix senses the voltage of both connected batteries. It will therefore also engage if for example the accessory battery is being charged by a battery charger. The Cyrix-i has a dual power supply. It will therefore also close if the voltage on one battery is too low to operate the Cyrix. In order to prevent unexpected operation during installation or when one battery has been disconnected the Cyrix-i will not close if the voltage on one of the two battery connections is lower than 2 V (12 V battery) or 4 V (24 V battery) or 8 V (48 V battery).

Parallel connection in case of emergency - The Cyrix can also be engaged with a push button (Cyrix remains engaged during 30 s) or a switch to connect batteries in parallel manually. This is especially useful in case of emergency when the starter battery is discharged or damaged.

Intelligent battery monitoring to prevent unwanted switching.

Some battery combiners will disconnect a battery in case of a short but high amperage load. A battery combiner also may fail to connect a large but discharged battery bank because the DC voltage immediately drops below the disengage value once the batteries are connected. The software of the Cyrix-i does more than simply connect and disconnect based on battery voltage and with a fixed time delay. The Cyrix-i looks at the general trend (voltage increasing or decreasing) and reverses a previous action only if the trend has reversed during a certain period of time. The time delay depends on the voltage deviation from the trend. In addition four switch timing profiles can be chosen.

12/24 V and 24/48 V auto ranging - The Cyrix-i automatically detects system voltage.

No voltage loss - Cyrix battery combiners are an excellent replacement for diode isolators. The main feature is that there is virtually no voltage loss so that the output voltage of alternators or battery chargers does not need to be increased.

Prioritizing the starter battery - In a typical setup the alternator is directly connected to the starter battery. The accessory battery and possibly also a bow thruster and other batteries are each connected to the starter battery with Cyrix battery combiners. When a Cyrix senses that the starter battery has reached the connect voltage it will engage to allow for parallel charging of the other batteries.

Bidirectional voltage sensing and power supply from both batteries - The Cyrix senses the voltage of both connected batteries. It will therefore also engage if for example the accessory battery is being charged by a battery charger. The Cyrix-i has a dual power supply. It will therefore also close if the voltage on one battery is too low to operate the Cyrix. In order to prevent unexpected operation during installation or when one battery has been disconnected the Cyrix-i will not close if the voltage on one of the two battery connections is lower than 2 V (12 V battery) or 4 V (24 V battery) or 8 V (48 V battery).

Parallel connection in case of emergency - The Cyrix can also be engaged with a push button (Cyrix remains engaged during 30 s) or a switch to connect batteries in parallel manually. This is especially useful in case of emergency when the starter battery is discharged or damaged.

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: 30545111259

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Jorge Contreras
Lowell, US
★★★★★ 5
Excellent.
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Reviewed in the United States on February 21, 2026
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Santi ellis
Pawtucket, US
★★★★★ 4
Mainly good
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Very good the material feels good The only bad thing is how much stuff you can put in it before it can’t really close
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Reviewed in the United States on April 12, 2026
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Mireya solis
Cuba, US
★★★★★ 5
Slim lots of space
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Exactly what i was looking for
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Reviewed in the United States on June 6, 2026
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Ma Leonor
Phoenix, US
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Excelente calidad
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Muy buena calidad
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Charlottesville, US
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Reviewed in the United States on June 4, 2026

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