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Victron Cyrix-ct Battery Combiner - 120A


The Cyrix Battery Combiner is a microprocessor controlled heavy duty relay that automatically connects batteries in parallel when one of them has reached a pre-set voltage (indicating that the battery is being charged), and disconnects when the voltage decreases below float level (indicating that one or more batteries are being discharged). 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.

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Intelligent battery monitoring to prevent unwanted switching Some battery combiners (also called voltage controlled relay, or split charge relay) 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-ct 12/24 does more than simply connect and disconnect based on battery voltage and with a fixed time delay. The Cyrix-ct 12/24 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.

- Long bolts at allows connection of more than one power cable
- Protection against overheating
- LED status indication (Cytrix-ct 12/24 230 only)
- 12/24V auto ranging
- No voltage loss
- Prioritising the starter battery
- Bidirectional voltage sensing and power supply for both batteries
- Parallel connection in case of emergency (Start Assist)
Input Voltage Range V 12V or 24V
Max. Continuous Load Current 120A

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