Victron
Victron Cyrix-Li-load 24/48V 230A
£188.40
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CYR020230450
Microprocessor controlled 230 A load relay for 24/48 V systems, fitted between a Victron LiFePO4 battery and a load. Disconnects the load on an imminent cell under voltage signalled by the VE.Bus BMS and reconnects once the battery has recovered. Includes LED status and a control cable.
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Description
PRODUCT DETAILS
- Load relay for lithium systems, 230 A at 24 V (80 A at 48 V)
- Designed for 24 V and 48 V systems
- Fitted between a Victron LiFePO4 battery and a load
- Controlled by a Victron VE.Bus BMS for full lithium protection
- Disconnects the load on an imminent cell under voltage
- Reengages 30 seconds after the battery voltage recovers
- Stays open after 3 attempts until the battery is genuinely recharged
- LED status indication and one metre control cable included
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Key specifications
| Continuous current | 230 A at 24 V (80 A at 48 V) |
| System voltage | 24/48 V |
| Technology | Relay (microprocessor-controlled) |
| Breaking capacity at 48 V | 80 A |
Operation
| Function | Load relay between LiFePO4 battery and load |
| Control input | Engages when high (approx. battery voltage), disengages when free floating or pulled low |
| Disconnect condition | Immediate when control input becomes free floating (imminent cell under voltage) |
| Reconnect condition | Reengages after 30 seconds; after 3 attempts, only once voltage exceeds 26 V / 52 V for 30 seconds |
| LED status indication | Yes |
General
| Current consumption when open | < 4 mA |
| Control cable included | Yes, length 1 m |
Enclosure
| Protection category | IP54 |
| Dimensions (H x W x D) | 65 x 100 x 50 mm |
| Weight | 0.27 kg |
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What does the Cyrix-Li-load do?
It is a load relay fitted between a Victron LiFePO4 battery and a load. Under BMS control it disconnects the load before the lithium cells can reach a damaging under voltage, then reconnects once the battery has recovered.
When does it reconnect the load?
If the battery voltage recovers after disconnecting, the relay reengages after 30 seconds. After three attempts it remains open until the battery voltage has risen above 26 V (52 V on a 48 V system) for at least 30 seconds, confirming the battery is being recharged.
What is the current rating at 48 V?
This model carries up to 230 A continuous on a 24 V system. Its breaking capacity at 48 V is 80 A, so size the installation accordingly for higher voltage systems.
When should I use a Cyrix-Li-load instead of a Cyrix-Li-charge?
Use the Cyrix-Li-load to switch a load and protect against cell under voltage. Use the Cyrix-Li-charge to switch a charging source and protect against cell over voltage or over temperature.
Does it need a BMS?
Yes. It must be used with a Victron VE.Bus BMS (or miniBMS) and Victron LiFePO4 batteries.
