Newmar 12-12-3i Power Stabilizer

The 12-12-3i Power Stabilizer ensures your marine electronics receive a steady and reliable voltage supply, safeguarding them against fluctuating battery conditions. Designed specifically for the demanding environment of boating, this stabilizer maintains optimal performance and extends the life of your sensitive equipment.

Reliable Voltage Regulation for Marine Electronics

Whether you're cruising the open seas or anchored in a marina, maintaining consistent voltage is crucial for the smooth operation of your boat's electronic systems. The 12-12-3i Power Stabilizer provides continuous, precisely regulated output across the entire range of your battery’s usable voltage. This prevents voltage fluctuations that can lead to equipment shutdowns, reduced performance, and potential damage to sensitive circuitry.

Enhanced Protection and Versatility

With total input/output isolation, this stabilizer virtually eliminates conducted line noise. It allows the connection of negative ground gear to positive or floating ground systems, and vice versa, offering unparalleled flexibility in various marine setups. Additionally, it can be adapted as a battery charger, enabling you to maintain a battery distant from the primary power source and ensuring reserve power availability in case of main source failure. The rugged anodized aluminum case is built to withstand the harsh conditions of marine environments.

Key Benefits for Marine Applications

• Operate electronics at optimal input voltage, even from nearly drained batteries
• Boost voltage to compensate for voltage drops in long wire runs from batteries
• Eliminate voltage drops during momentary high current drains, such as engine starts
• Maintain stable voltage from varying charge sources
• Prevent voltage overshoot caused by sudden removal of high current loads

Technical Specifications

Specification	Details
Input Voltage	10-16 V
Input Amps	4 A
Output Voltage	13.6 V
Output Amps (Intermittent)	3 A
Output Amps (Continuous)	3 A
Case Size (H x W x D)	3.5 x 3.5 x 1.75 inches (8.9 x 8.9 x 4.5 cm)
Weight	1 lb. (0.45 kg)
Output	12 or 24 V, nominal (see matrix)
Ripple	150 mV P-P maximum
Regulation	1% Line/Load

Duty Cycle Ratings

Rating	Description
Intermittent	20 minutes max on time, 20% duty. Current limit set at approximately 105% of intermittent rating.
Continuous	24 hours, 100% duty
Idle Current	Less than 100 mA (including power “ON” light)
Operating Temperature	0-50°C, derate linearly from 100% @ 40°C to 50% @ 50°C. Thermal shutdown at 70°C case temperature.
Switching Frequency	40 kHz
Efficiency	85% – Typical
Isolation	250 VDC between Output/Chassis and Input/Chassis

Mechanical Features

• Durable anodized aluminum heat sink case
• Front panel terminal block for easy connections
• Heavy-duty mounting flange for secure installation
• Conformal-coated PC board for enhanced durability

Customization and Options

• Operation as a battery charger (contact factory)
• Parallel/redundant operation (contact factory)
• High-vibration mounting kit
• Non-standard output voltage options (contact factory)

Extreme Vibration Mounting Kit

Designed for high-vibration marine environments, the Extreme Vibration Mounting Kit offers superior protection for your NEWMAR power converters. This kit replaces the standard vibration kit and integrates into the unit’s mounting flange, acting as a “super shock absorber” to mitigate the stresses of shock and vibration. Available for all NEWMAR units ranging from 2 to 70 lbs, specify KIT–L for units weighing 2–15 lbs and KIT–H for units weighing 16-70 lbs.

Customer Support and Returns

This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.