Newmar LVD 12-30 Low Voltage Disconnect 12V DC 30A Battery Protect (NEW In Box)

The Newmar LVD 12-30 is a 12 volt, 30 amp low voltage disconnect from Newmar Powering the Network in California. Its job is to stop a battery bank being ruined by over discharge. It wires in series in the load leg between the battery and the load, with a separate small gauge sense wire running directly to the battery terminal so it reads true terminal voltage rather than voltage depressed by load current.

When the battery falls to the disconnect setpoint the internal contactor opens and drops the entire load, halting the discharge before the cells suffer permanent capacity loss. It holds the load off, drawing only its own small standby current, until a charge source brings the bank back up to the higher reconnect setpoint, at which point it closes again automatically. The gap between the two setpoints is what prevents the relay chattering on and off as the bank sags and recovers. Both setpoints are adjustable on potentiometers reachable through the cover.

Specifications

Brand: Newmar Powering the Network

Model: LVD 12-30

Part Number: LVD 12-30

Alternate Part Number: 490-1230-0 REV A

Product Type: DC low voltage disconnect, battery over discharge protection

Nominal System Voltage: 12 V DC, negative ground

Maximum Continuous Current: 30 A

Factory Disconnect Setpoint: 10.4 V DC

Factory Reconnect Setpoint: 12.2 V DC

Disconnect Adjustment Range: 10.4 to 15 V DC

Reconnect Adjustment Range: 9 to 15 V DC

Quiescent Draw, Load Connected: 0.30 A

Quiescent Draw, Load Disconnected: 50 mA maximum

Terminals: Studs with supplied ring lugs, 2 x quarter inch for input and output, 1 x number 10 for sense

Sense Circuit Protection: 1 A fast blow fuse

Indicator LEDs: None

Alarm Contacts: None

Mounting: Wall, bulkhead or mobile via case flanges, horizontal or vertical

Enclosure: Vinyl clad aluminium, electrically isolated case

Operating Temperature: 0 to +50 degrees C

Dimensions: Approximately 133 x 133 x 89 mm (5.25 x 5.25 x 3.5 in)

Unit Weight: Approximately 0.45 kg

Serial Number: 17260012

Barcode: 729198676087

Country of Origin: United States of America

Condition: New, in the original box

Key Features

• Protects a 12 V battery bank from deep discharge damage
• Both disconnect and reconnect setpoints adjustable on board
• Separate sense lead reads true battery terminal voltage under load
• Automatic reconnection once the bank recovers, no manual reset
• Low 50 mA standby draw once the load is disconnected
• Rugged vinyl clad aluminium case, isolated so it can mount on metal or timber
• Ring lugs and insulating boots supplied
• Made in the USA

Typical Applications

• Off grid and standby solar battery banks
• Remote telemetry, radio and telecom sites on 12 V DC
• Marine, RV and mobile 12 V systems with an auxiliary battery
• Any 12 V load that must be shed before the battery is damaged

Package Includes

• 1 x Newmar LVD 12-30 low voltage disconnect
• 2 x quarter inch ring lugs for input and output
• 1 x number 10 ring lug for the sense connection
• Rubber insulating boots
• No cabling, battery or mounting hardware is included

Additional Information

A low voltage disconnect is battery protection, not load protection. It responds to voltage, not to overcurrent, so it is not a circuit breaker and does not replace one. Fusing or breaker protection is still required.

This model is the negative ground 12 volt version. Please note that the 48 volt unit in the same family is a positive ground design with inverted sense polarity, so the two are not interchangeable in wiring topology.

Newmar does not assign an IP or NEMA rating to the LVD series, so this should be treated as an indoor or protected enclosure product. There are no status LEDs and no alarm or dry contact outputs on this model.

The LVD 12-30 remains a current Newmar product, though Australian distribution is thin and most stock in this market is imported from the United States.

Installation must be carried out by a suitably qualified person.

The item is new in the manufacturer's original packaging.

Shipping from Sydney, Australia.