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The Victron Energy Cyrix-i 400A Smart Disconnector is a intelligent battery combiner that automatically disconnects two batteries when the voltage of one of them is high enough to charge the other.
Unlike diode isolators, Cyrix does not create a voltage drop, allowing you to use generators or chargers as efficiently as possible.
The unique voltage trend analysis function provides intelligent disconnection and disconnection of batteries, preventing unwanted trips from short load pulses.
Key benefits of the Victron Energy Cyrix-i Smart Disconnector
- No voltage loss – unlike diode isolators
- Automatic switching between 12 V and 24 V batteries
- Intelligent voltage analysis – does not react to short drops/surges
- Overheating protection – shutdown when the contact temperature is exceeded
- Low power consumption in the open state (<4 mA)
- Start Assist function – manual connection of batteries for 30 s in case of an accident
- Two-way voltage measurement – from any battery
- Easy connection via M6 screw terminals
- Automatic recovery after cooling
Technical specifications
- Article: CYR010400000
- Rated current: 400 A
- Starting current (5 sec.): 2000 A
- Operating voltage: 12 V / 24 V (auto-detection)
- Disconnection threshold: 13.0-13.8 V / 26.0-27.6 V
- Disconnection threshold: 11.0-12.8 V / 22.0-25.7 V
- Voltage drop: practically absent
- Overvoltage protection: >16 V
- Temperature protection: automatic shutdown
- Manual connection function (Start Assist): yes, 30 seconds
- Dimensions (mm): 78 x 102 x 110
- Weight: 0.9 kg
- Protection degree: IP54
- LED indication: two-color LED
Usage scenarios
- Motorhomes and campers – automatic switching between starting and service batteries
- Yachts and boats – smart charging of residential batteries from a generator
- Backup power in autonomous systems
- Commercial transport – support for powering the service battery without the risk of discharging the main one
- Field power systems – flexible connection and emergency backup
Technological features
- Voltage trend analysis – disconnection occurs only with a stable increase in voltage
- Automatic disconnection – if the voltage drops below the threshold
- Two-way measurement – connection is possible both when charging from the generator and the charger
- Two power sources – the device works even with low voltage of one battery
- Protection against installation errors – does not connect at a voltage of <2 V
- Start Assist function – pressing a button or switch activates the connection of the batteries