Victron Cyrix-i 24/48V-400A Intelligent Battery Combiner - CYR020400000

SKU: CN VICYR020400000

€ 308,55

1-2 weeks delivery time
Price incl. 19% VAT

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The Victron Cyrix-i 24/48V-400A (CYR020400000) is a heavy-duty intelligent battery combiner relay for high-power 24V and 48V systems. It connects batteries in parallel when charging is detected and disconnects during discharge—without any voltage loss. Features include bidirectional sensing, programmable switching profiles, Start Assist function, and LED status indication. Designed for industrial, marine, or off-grid energy setups requiring precise and automated DC battery management.

Description
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Victron Energy Cyrix-i 24/48V-400A (CYR020400000) is an advanced, microprocessor-controlled battery combiner designed for high-capacity DC applications. This unit automatically connects batteries when charging is detected and disconnects them when discharging, using intelligent voltage trend analysis for accurate timing and switching.

It supports both 24V and 48V DC systems with auto-ranging capability and features zero voltage drop to ensure full power delivery from alternators or chargers. The unit includes a Start Assist emergency function, four selectable switching profiles, and bi-colour LED status indication.

Technical Specifications:

Model	CYR020400000 (Cyrix-i 24/48V-400A)
System Voltage	24V / 48V auto-detection
Continuous Current Rating	400A
Peak Current (1 sec)	2000A
Input Voltage Range	16 – 72 VDC
Overvoltage Disconnect	32V / 64V
Power Consumption (open)	< 4 mA
Start Assist Function	Yes – 30 seconds manual override
Status Indication	Bi-colour LED
Selectable Profiles	4 connect/disconnect timing profiles
Protection Rating	IP54
Dimensions (H × W × D)	78 × 102 × 110 mm
Weight	0.9 kg

Key Features:

Automatic battery combining and isolation based on voltage trends.
Supports both 24V and 48V DC systems (auto-ranging).
Start Assist feature manually connects batteries for 30 seconds.
Zero voltage drop – ideal replacement for diode isolators.
Microprocessor-controlled logic with intelligent delay and switching behavior.
Selectable timing profiles for customized behavior (charging/discharging logic).
Bi-directional voltage sensing from both battery banks.
Dual power input – ensures functionality even if one battery is deeply discharged.

Selectable Switching Profiles:

Profile 0: Gradual response with connection from 13V+, disconnection below 12.8V.
Profile 1: Fast connect at 13.25V+ (30 sec delay), immediate disconnect below 10.5V.
Profile 2: Connect at 13.2V+ (6 sec), disconnect after 30 sec below 12.8V or immediately at <10.5V.
Profile 3: Extended delay profile with longer time windows and safety margin.

Typical Applications:

High-capacity marine battery banks and vessel energy systems
Off-grid and hybrid solar energy systems with multiple battery banks
Industrial and telecom-grade battery installations

Note: The Cyrix-i 24/48V will not close if one battery is below 4V (24V) or 8V (48V), unless Start Assist is activated and system voltage is sufficient for relay operation.

Looking for a different Victron Battery Combiners? Explore our full Victron Cyrix Battery Combiners product range.