m-LVD Low Voltage Disconnect - Dimensioned Drawing

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

through our network of certified installers

Find an installer

Service d'assistance

Choose additional assistance for installation

Estalvieu 7%

Blue Sea Systems

7635-BSS

Desconnectador de baixa tensió m-LVD

Le déconnecteur basse tension BLUE SEA m-LVD est une solution automatique pour protéger vos batteries 12V DC de la décharge profonde, en coupant les charges non essentielles. Il offre une tension de déconnexion ajustable de 11.3V à 12.1V et une certification IP67. Ce produit inclut le commutateur de contrôle à distance PN 7928 et un couvercle isolant arrière.

Public priceGet pro pricing

127,73€

127,73€ ~~138,72€~~

IVA inclòs Expedició calculada en el moment del pagament.

En estoc

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

through our network of certified installers

Find an installer

Service d'assistance

Choose additional assistance for installation

Technical specifications

Tensió nominal	12
Mida de terminal	M6 (1/4"-20)
Grau de protecció IP	IP67
Protecció AFD	Non
Alarm Time Before Disconnect	5
Corrent continu (A)	65.0
Tipus de control	Commutateur à distance
Dimensions (L x A x P)	70 x 70 x 50
Disconnect Voltage Range	11.3V - 12.1V
Factory Default Disconnect Voltage	12.1
Corrent intermitent (A)	115 (5 min)
Bloquejable amb clau	Non
Tipus de muntatge	Surface, panneau avant ou panneau arrière
Nombre de pols	1
Operating Current Connected Ma	95
Operating Current Open Ma	4
Interval de tensió de funcionament	11.3V - 13.5V DC (nominal 12V DC)
Diàmetre de retall del panell	58.7
Posicions	Réglage de la tension de déconnexion, Override, Arrêt
Ús del producte	Déconnecte automatiquement les charges non essentielles pour préserver la batterie et assurer le démarrage du moteur.
Reconnect Voltage	13
Remote Control Switch Included	Oui
Tipus d'interruptor	Déconnecteur de basse tension automatique
Tipus de terminal	Goujon fileté
Time Delay To Alarm	5
Total Disconnect Delay	10
Tipus de connexió de cablejat	À goujons

Detailed description

Dissenyat per a la gestió intel·ligent de l’alimentació dels sistemes de 12V DC, el m-LVD Low Voltage Disconnect de BLUE SEA és un desconnectador automàtic de baixa tensió. Protegeix les bateries contra la descàrrega profunda tallant automàticament les càrregues no essencials quan la tensió de la bateria baixa per sota d’un llindar predefinit. Aquesta funció permet preservar l’energia necessària per a l’arrencada del motor o allargar la vida útil de la bateria.

Especificacions tècniques i funcionalitats principals

El m-LVD ofereix una tensió nominal de 12V DC, amb una capacitat de 65A en continu i de 115A en intermitent durant 5 minuts. La tensió de desconnectada és ajustable entre 11,3V i 12,1V, amb un ajustament de fàbrica a 12,1V. El sistema integra un retard de 5 minuts abans de l’activació d’una alarma (si és opcional) quan la tensió baixa per sota del llindar, seguit d’un retard addicional de 5 minuts abans de la desconnectada efectiva, cosa que suma un total de 10 minuts. La reconnexió es produeix automàticament quan la tensió supera els 13,0V durant 2 minuts o els 13,5V durant 30 segons. El corrent de funcionament és de 95mA en estat connectat i de 4mA en estat obert.

Aquest desconnectador s’entrega amb l’interruptor de control a distància PN 7928, que permet ajustar la tensió de desconnectada, activar un mode "Override" que retarda la desconnexió 10 minuts, o tallar manualment els circuits mitjançant la funció "OFF". L’interruptor també permet desactivar l’alarma sonora opcional. El m-LVD té certificació IP67 per a immersió temporal i compleix els requisits de protecció contra la inflamació externa ISO 8846 i SAE J1171. Admet cables fins a 1/0 AWG (50mm²) amb cargols de born de 1/4"-20 (M6) que requereixen un parell de 60 in-lb (6,78 Nm). El pes de la unitat no està especificat en la documentació proporcionada ni en les fonts web.

Integració i posicionament

Mentre que productes com els tallabateries manuals de BLUE SEA o els repartidors de càrrega (ACR) gestionen respectivament l’aïllament o la distribució de càrrega, el m-LVD es posiciona com un element de protecció proactiva de les bateries. Es diferencia d’un tallabateries simple per la seva automatització i la seva capacitat per gestionar específicament les càrregues no essencials. En comparació amb solucions més complexes que integren gestors de bateria multifunció, el m-LVD ofereix una solució objectiva i simplificada per a la desconnexió de baixa tensió, especialment adequada per a instal·lacions de 12V DC que requereixen una protecció fiable contra la descàrrega profunda sense la complexitat d’un sistema complet.

Documentation

Type	Nom
	EN - Instructions - m-LVD Low Voltage Disconnect
	EN - Certificate - m-LVD Low Voltage Disconnect
	EN - Certificate - m-LVD Low Voltage Disconnect

Expert review

Pol CONIN

Responsable digital

« Smart 12V DC battery protection: expert review of the BLUE SEA m-LVD disconnect »

The BLUE SEA m-LVD low-voltage disconnect is a critical component for the longevity of 12V DC onboard electrical systems. It is specifically designed for sailboat owners, recreational vehicle owners, or standalone installations seeking to protect their service battery bank from deep discharges without constant manual intervention. Its primary function is to maintain sufficient energy reserves for engine starting by automatically shedding secondary loads before voltage reaches a critical threshold.

Installation is simplified by its multiple mounting options (surface, front or rear panel) and clear documentation. For optimal integration, it should be placed on non-critical charging circuits, downstream of the main battery switch. Wiring must comply with recommendations for 6 AWG (16mm²) for nominal currents, though the device physically accepts up to 1/0 AWG (50mm²). Adding an optional alarm is a valuable feature, providing an early warning before the actual disconnection.

This m-LVD stands out from traditional battery switches by its intelligence and automation. Unlike a simple switch, it actively monitors voltage and acts preventively. Its ability to adjust the disconnection voltage (between 11.3V and 12.1V) and the "Override" function via the remote switch offers valuable flexibility to adapt to different battery types and immediate user needs. It is a standalone and effective solution, not requiring integration into a complex NMEA 2000 network, making it particularly relevant for simpler electrical systems or as a complement to existing installations. Its robust design, IP67 certified and compliant with ignition protection standards, ensures reliability in marine environments.

Durabilité

Facilité d'installation

Rapport performance / prix

Payment and security

Your payment information and data are processed securely.

Desconnectador de baixa tensió m-LVD

127,73€

127,73€ ~~138,72€~~

Complete your installation with

Complementary equipment

Coupe-batterie à distance ML-RBS avec commande manuelle - 12V DC 500A - ML-RBS Remote Battery Switch with Manual Control - 12V DC 500A

Coupe-batterie à distance ML-RBS avec commande manuelle - 12V DC 500A - Wiring Diagram

Blue Sea Systems

Tallabateries de bateries a distància ML-RBS amb comandament manual - 12 V CC 500 A

Ref : 7700B-BSS

245,71€

245,71€ ~~297,48€~~

Blue Sea Systems

Amperímetre M2 DC

Ref : 1832-BSS

419,60€

419,60€ ~~466,08€~~

Mini ampèremètre OLED- Max 100A - Mini OLED Ammeter - Yellow

Blue Sea Systems

Mini amperímetre OLED - Màx. 100A

Ref : 1732B-BSS

95,88€

95,88€ ~~116,82€~~

Coupe batterie 500A série M ON/OFF avec clé de verrouillage - Single Circuit ON-OFF with Locking Key - Red

Blue Sea Systems

Tallacorres de bateria 500 A sèrie M amb clau de bloqueig

Ref : 6004B-BSS

40,38€

40,38€ ~~45,90€~~

Sélecteur de batterie e-Series 4 positions - Mounting Diagram

Blue Sea Systems

Selector de bateria e-Series de 4 posicions

Ref : 9001EB-BSS

63,31€

63,31€ ~~70,80€~~

Tableau électrique 12 volts CC 4 positions

Blue Sea Systems

Quadro elèctric 12 volts CC 4 posicions

Ref : 1216-BSS

263,45€

263,45€ ~~327,20€~~

Panneau de disjoncteur Contura 4 positions - Water Resistant Circuit Breaker Panel 4 Position-Black

Blue Sea Systems

Tauler de disjuntors Contura de 4 posicions

Ref : 8372-BSS

177,65€

177,65€ ~~198,96€~~

Interrupteur de batterie série m 300A rouge unipolaire - m-Series Mini On-Off Battery Switch with Knob - Red

Blue Sea Systems

Interrupteur de bateria sèrie m 300 A vermell unipolar

Ref : 6006B-BSS

37,82€

37,82€ ~~46,43€~~

Interrupteur de batterie série m 300A rouge bipolaire - m-Series Mini Dual Circuit Battery Switch - Red

Blue Sea Systems

Interruptor de bateria sèrie m 300 A vermell bipolar

Ref : 6010B-BSS

66,61€

66,61€ ~~77,36€~~

Coupe batterie On-Off robuste série HD avec AFD - HD-Series Heavy Duty On-Off Battery Switch with AFD

Coupe batterie On-Off robuste série HD avec AFD - Mounting Diagram

Blue Sea Systems

Tallabateries de bateria marxa/atur robuste sèrie HD amb AFD

Ref : 3001B-BSS

103,08€

103,08€ ~~148,08€~~

Panneau de disjoncteur étanche WeatherDeck® 12V DC - Gris 8 positions - WeatherDeck® 12V DC Waterproof Circuit Breaker Panel - Gray 8 Positions

Blue Sea Systems

Tauler de disjuntors estanc WeatherDeck® 12 V CC - Gris 8 posicions

Ref : 4378-BSS

218,86€

218,86€ ~~258,24€~~

Frequently Asked Questions

Need help? Contact us

What is BLUE SEA's m-LVD Low Voltage Disconnect?

BLUE SEA's m-LVD (Low Voltage Disconnect) is an automatic low-voltage disconnect device designed for 12V DC systems. Its primary function is to protect batteries from deep discharge by automatically cutting non-essential loads when the battery voltage drops below a predefined threshold. This preserves the energy required for engine starting or extends battery life.

What are the main functions of the m-LVD Low Voltage Disconnect?

The main functions of the m-LVD include:

Protection of batteries against deep discharge.Automatic disconnection of non-essential loads in case of low voltage.Automatic reconnection of circuits when battery voltage is restored.A visual indicator of low-voltage status.An alarm output for optional sound warning.Remote control for adjusting disconnection voltage, an "Override" mode, and a manual "OFF" function.

What is the nominal operating voltage of the m-LVD?

The m-LVD Low Voltage Disconnect is designed to operate at a nominal voltage of 12V DC.

What is the DC current capacity of the m-LVD?

The m-LVD can handle a DC current of 65 amperes (A).

What is the intermittent current capacity of the m-LVD?

The m-LVD has an intermittent current capacity of 115 amperes (A) for a maximum duration of 5 minutes.

Is the m-LVD water-resistant or suitable for marine environments?

Yes, the m-LVD is IP67 certified, meaning it is protected against temporary immersion. It also meets the external ignition protection requirements of ISO 8846 and SAE J1171, making it suitable for marine environments.

What are the safety certifications of the m-LVD?

The m-LVD complies with external ignition protection requirements per ISO 8846 and SAE J1171 standards. It is also CE certified under Directive 2013/53/EU for recreational craft and personal watercraft.

What is the current consumption of the m-LVD?

The m-LVD consumes 95 mA in connected state (normal operation) and only 4 mA in open state (disconnected).

Does the m-LVD have a visual indicator for voltage status?

Yes, the m-LVD is equipped with a status light that provides a visual warning of low voltage before disconnection. This indicator is present both on the m-LVD and on the remote control switch.

Can the m-LVD trigger an audible alarm in case of low voltage?

Yes, the m-LVD has an alarm output that can be connected to an optional audible alarm. This alarm triggers 5 minutes after the voltage drops below the disconnect threshold, providing an audible warning before the circuits are effectively cut off.

How to adjust the disconnect voltage of the m-LVD?

To adjust the disconnect voltage, hold the OVERRIDE position of the remote control switch for 10 seconds. The LED indicator will start flashing to indicate the current setting. Use the OFF position to decrease the voltage in 0.2V increments (down to 11.3V) and the OVERRIDE position to increase it (up to 12.1V). The factory setting is 12.1V. Release the switch and wait approximately 20 seconds for the new setting to be saved.

What are the safety prerequisites before installing the m-LVD?

Before starting any electrical installation, it is imperative to disconnect all AC and DC power sources. If you are not familiar with electrical systems, it is recommended to consult a qualified professional. Never service equipment that has been automatically disconnected by the m-LVD without first removing power permanently by another means than the m-LVD itself.

How to choose the mounting location for the m-LVD and its remote control switch?

The m-LVD can be mounted in three ways: on the rear panel, on the front panel, or surface-mounted. The remote control switch is typically mounted on a panel. Drilling dimensions are provided for the remote switch installation.

What cable size is recommended to connect the m-LVD?

To meet the m-LVD’s current capacity, the minimum recommended cable size is 6 AWG (16mm²). However, larger cable sizes may be required to minimize voltage drop over long distances. Consult a certified ABYC electrician for proper cable sizing and fuse selection.

What are the dimensions of the m-LVD connection terminals?

The m-LVD connection terminals are 1/4"-20 (M6) studs.

Is the m-LVD supplied with a remote control switch?

Yes, the m-LVD is supplied with the remote control switch PN 7928. This switch allows you to adjust the disconnect voltage, activate the "Override" mode, or manually cut circuits via the "OFF" function.

Should fuses be used with the m-LVD? And if so, what size?

Yes, using fuses is essential for circuit protection. The fuse size depends on the maximum current of the protected circuit:

For ≤30A: 40A-50A fuse with #10 AWG (6mm²) cableFor ≤50A: 60A-65A fuse with #8 AWG (10mm²) cableFor ≤65A: 90A-100A fuse with #6 AWG (16mm²) cableIt is recommended to consult a certified ABYC electrician for correct fuse placement and sizing.

Is the m-LVD compatible with systems other than 12V DC?

No, the m-LVD is specifically designed for electrical systems with a nominal voltage of 12V DC. It is not compatible with systems of different voltage (e.g., 24V DC or AC).