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The Victron Cyrix-ct 12/24V-230A intelligent voltage relay — is a smart switch designed for parallel connection of two or more battery banks during their charging process. As soon as the voltage on the primary battery reaches the required maximum, the relay automatically closes the contact, allowing the flow of energy to the other batteries. Cyrix-ct is a fail-safe solution for vehicles, marine vessels, motorhomes, and isolated power stations.
This version intelligently recognizes and supports 12-volt and 24-volt networks, freely passing current up to 230 amperes without the need for manual configuration. The smart analysis algorithm reliably protects the system from accidental closures during brief voltage surges, guaranteeing safe charging of the entire battery array.
Key functionality and strengths:
- Automated parallel connection of batteries in the presence of charging current
- Full compatibility with any energy sources: diesel generators, solar panels, network chargers
- Bidirectional voltage monitoring – assesses the status of all connected batteries
- Start Assist button – for forced combination of batteries during emergency start of an ICE
- Starter battery safety – the circuit is immediately broken at the first signs of voltage drop
Declared technical specifications:
- Supported voltage: 12 / 24 V (auto-detection)
- Long-term current output: 230 A
- Activation (closing) voltage: 13.4 V / 26.8 V (±0.2 V)
- Deactivation (opening) voltage: 13.2 V / 26.4 V (±0.2 V)
- Response delay timer: within 10 seconds
- Own energy consumption: 4 mA (in standby mode), 12 mA (with closed contacts)
- Operating temperatures: from -40 to +60 °C
Where it is applied:
- Smart synchronization of main (starter) and service batteries
- Charging an array of 2 or 3 independent batteries (when using several Cyrix-ct relays)
- River and marine transport, tourist vans, uninterruptible power supply systems