Description
Victron CYRIX-CT 12/24V-120A Battery Combiner | Boat Supply Store
Eliminate parasitic drain and ensure consistent battery charging in multi-battery configurations with the Victron CYRIX-CT 12/24V-120A. This microprocessor-controlled relay automatically connects and disconnects batteries based on voltage, operating seamlessly in both 12V and 24V systems. Delivering a robust 120A continuous current rating with virtually no voltage loss, it serves as a superior replacement for traditional diode isolators, crucial for maintaining charge levels on your offshore fishing vessel.
Key Features
- Intelligent Microprocessor Controlled Relay
- Automatic Parallel Connection During Charging
- Automatic Series Disconnection During Discharging
- Minimal Voltage Loss (<0.1V)
- Versatile 12V and 24V System Compatibility
- High-Capacity 120A Continuous Current Rating
- Direct Replacement for Diode Isolators
- Reliable Battery Management Solution
Specifications
| Product Specifications | |
|---|---|
| System Voltage | 12/24V Auto-Detect |
| Continuous Current Rating | 120A |
| Peak Current Rating | 350A (5 seconds) |
| Voltage Load Disconnect | 26.5V (for 24V system), 13.2V (for 12V system) |
| Voltage Charge Connect | 27.6V (for 24V system), 14.4V (for 12V system) |
| Power Consumption (standby) | < 5mA |
| Operating Temperature | -40 to +60 °C |
| Ingress Protection | IP65 |
Who This Is For
Boat owners, RV enthusiasts, and off-grid power system users requiring efficient management of multiple batteries. Ensures all batteries are charged when the engine or charger is active and isolated when discharging to protect a primary battery from deep discharge.
How It Compares
| Feature | Victron CYRIX-CT 12/24V-120A Battery Combiner | Blue Sea Systems ML |
|---|---|---|
| Voltage Compatibility | 12/24V | 12V, 12V/24V |
| Continuous Current Rating | 120A | 120A, 100A |
| Voltage Drop | Virtually none | Approx. 0.1V, Approx. 0.2V |
| Control Type | Microprocessor Controlled Relay | Microprocessor Controlled Relay, Microprocessor Controlled Relay |
Common Concerns Answered
Why does the Victron CYRIX-CT lack a manual override switch?
The intelligent design of the Victron CYRIX-CT relies on its microprocessor to manage battery connections automatically. This approach minimizes the potential for user error and ensures consistent, optimal performance in most scenarios. For specific, advanced manual control, alternative solutions may be considered.
What if I need more advanced diagnostics than the CYRIX-CT offers?
While the CYRIX-CT focuses on core, reliable battery combining functionality, Victron Energy offers a range of more advanced battery monitoring and management systems for users requiring detailed diagnostics and adjustable parameters. This unit prioritizes robust, automatic operation.
Is it confusing to understand when the CYRIX-CT engages or disengages?
The unit is designed to automatically connect when charging voltage is detected (typically above 27.6V for 24V systems or 14.4V for 12V systems) and disconnect when voltage drops below a set threshold (typically 26.5V for 24V systems or 13.2V for 12V systems). Refer to the manual for precise specifications and installation details to ensure proper understanding.
Frequently Asked Questions
What is a battery combiner and why do I need one?
A battery combiner is an intelligent relay that automatically connects multiple batteries in parallel when charging is detected and isolates them when discharging. This ensures that both your starter battery and house battery are charged simultaneously, and prevents a discharged house battery from draining your starting battery, which is essential for reliable engine starts.
How does the Victron CYRIX-CT 12/24V-120A work?
It utilizes a microprocessor to monitor battery voltages. When the voltage of one battery reaches a specified charging level (indicating a charging source like an alternator or charger is active), it automatically closes the relay, paralleling the batteries. When the voltage drops below a specified level, it opens the relay, isolating the batteries.
Can the Victron CYRIX-CT replace a diode isolator?
Yes, it is an excellent replacement for diode isolators. Unlike diode isolators which inherently cause significant voltage drop and charging inefficiency, the CYRIX-CT offers virtually no voltage loss, allowing your batteries to charge more effectively and reach their full capacity.
What is the voltage drop across the Victron CYRIX-CT?
The Victron CYRIX-CT 12/24V-120A is designed with minimal voltage drop, typically less than 0.1V under load. This efficiency ensures that a greater percentage of the charging voltage reaches your batteries.
What is the maximum continuous current rating for the Victron CYRIX-CT?
The Victron CYRIX-CT 12/24V-120A has a maximum continuous current rating of 120 Amperes, making it suitable for managing significant electrical loads in marine and RV applications.
