Installation and operation guide for the Blue Sea Systems m-LVD Low Voltage Disconnect, covering wiring, settings, and safety information.
About this manual
This manual provides step‑by‑step instructions for installing the Blue Sea Systems m‑LVD Low Voltage Disconnect, including mounting options, wiring diagrams, and fuse selection. It also explains how to use the optional remote control switch and alarm output.
Operational details cover adjusting the disconnect voltage, interpreting LED status indicators, and using the override and off functions to temporarily delay or silence the disconnect. Safety cautions and regulatory compliance notes are included throughout.
What's inside
- Installation
- Mounting Options
- Remote Control Switch
- Specifications
- Connection Table
- LED Status Chart
- Alarm Output
- Wire Size and Fuse Rating
Specifications
| Intermittent Rating | 5 min. |
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| Continuous Rating | 65A |
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| Nominal Voltage | 12V DC |
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| Cable Size | 6 AWG (16mm²) |
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| Disconnect Voltage Range | 11.3V – 12.1V (adjustable) |
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| Time Delay to Alarm | 5 minutes |
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| Reconnect Voltage | 13V DC |
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| Maximum Alarm Current | 250 mA |
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| Maximum External LED Current | 14 mA |
Frequently asked questions
How do you adjust the disconnect voltage on the m‑LVD?
Press and hold the OVERRIDE position for 10 seconds to enter adjustment mode, then use the OFF button to decrease or the OVERRIDE button to increase the voltage in 0.2 V steps.
What is the alarm time before the m‑LVD disconnects?
The unit waits 5 minutes after the voltage falls below the set point before sounding the alarm, then an additional 5 minutes before disconnecting.
What wire size is required for a 65 A continuous load?
Use #6 AWG (16 mm²) wire for up to 65 A continuous current.
How long can you temporarily delay the disconnect using the remote switch?
Press OVERRIDE to delay circuit disconnect for 10 minutes.