SKU:
CN VICYR010120412
€ 90,88
1-2 weeks delivery time
Price incl. 19% VAT
Price incl. 19% VAT
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The Victron Cyrix-Li-ct 12/24V-120A (CYR010120412) is an intelligent battery combiner relay designed to parallel-connect a lead-acid starter battery with a Victron LiFePO₄ service battery. Controlled by the VE.Bus BMS, it engages when safe charging conditions are detected and disconnects instantly in case of overvoltage or overtemperature events. With a 120A continuous current rating and start-assist functionality, this combiner provides safe and efficient charging and backup power transfer in automotive, marine, and RV applications.
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Victron Energy Cyrix-Li-ct 12/24V-120A – Battery Combiner Relay for Lithium and Starter Batteries (CYR010120412)
The Cyrix-Li-ct 12/24V-120A is an intelligent relay designed to connect a lithium service battery to a lead-acid starter battery under controlled and safe conditions. It operates under the supervision of a Victron VE.Bus BMS, ensuring safe parallel connection only when the lithium battery is ready to accept charge. The Cyrix-Li-ct also includes a manual start-assist function and features fast, reliable switching to protect sensitive electronics and battery packs.
Key Features
- 120 A continuous current handling for 12V and 24V systems
- Monitors voltage on both terminals and BMS charge control signal
- Connects batteries in parallel when:
- Charge Disconnect output of the BMS is HIGH
- Battery voltage > 13.4V or > 26.8V detected
- Instant disconnect when:
- Control signal becomes floating (overvoltage or overtemperature)
- Battery voltage drops below 13.2V
- Manual start-assist function (relay closes for 30 seconds on negative pulse)
- Built-in voltage suppressor to eliminate switching spikes
Electrical Specifications
Parameter Value System Voltage 12V / 24V Continuous Current Rating 120 A Breaking Capacity (12V/24V) 120 A Idle Current Consumption <4 mA Control Input HIGH: Engage, LOW/Floating: Disengage
Engagement Logic
Condition Action BMS signal HIGH and voltage > 13.4V / 26.8V Engages battery combiner Voltage drops below 13.2V or signal LOW Disengages immediately
Mechanical & Environmental
Parameter Value Dimensions (HxWxD) 46 × 46 × 80 mm Weight 0.11 kg (0.24 lbs) Protection Rating IP54 Operating Temperature -20°C to +50°C Humidity Max. 95% (non-condensing)
Application Examples
- Parallel connection of a Victron lithium house battery and a lead-acid starter battery
- Marine or camper systems requiring start assist from lithium bank
- Automatic charging control from alternator or backup charging path
Additional Features
- Transient voltage suppressor for safe switching
- Designed to work with VE.Bus BMS in Victron lithium systems
- Manual override/start-assist with short negative pulse
Documents
Victron Energy Cyrix Li-ion 120 A Size: 908,2 Kb -
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