Newmar 115-12-20A Power Supply

This super-rugged DC power supply is engineered specifically for marine applications, providing dependable 12-volt power to essential communication and navigation equipment on commercial vessels. With its proven linear circuit design, it delivers pure, noise-free output and ensures a long service life, making it a vital component for maintaining reliable operations at sea.

Key Features

• Exceptional Voltage Regulation: Maintains output voltage within 1% under all rated line and load conditions, ensuring stable power for critical marine electronics.
• Durable Construction: Features a polyurethane conformal-coated PCB and a corrosion-resistant heavy-duty aluminum case with integral shock mounts, guaranteeing survival in harsh marine environments.
• Efficient Thermal Management: Large heat sink fins effectively extract and dissipate heat generated by semiconductors, ensuring cool and reliable operation.
• Comprehensive Protection: Equipped with overvoltage protection, current limiting (set at 105% of intermittent rating), thermal overload protection, and input/output fusing to safeguard your equipment.
• Active Cooling: Thermally activated cooling fan on “CD” units enhances thermal management during high-demand operations.

Technical Specifications

Specification	Details
Nominal Input Voltage	115/230 VAC
Maximum Input Current @115V	5.5 A
Maximum Input Current @230V	2.5 A
Output Amperage (Intermittent)	20 A
Output Amperage (Continuous)	8 A
Weight	20 lbs / 9.1 kg

Case Dimensions

Dimension	Size
Height	5.7”
Width	4.8”
Depth	16.3”

Input Range

105-125/210-250 VAC (selectable), 50-60 Hz. The power supply derates to 50% output below 110 and 220 VAC.

Operating Temperature

Standard Units: Operates between 0-50°C. The output derates linearly from 100% at 40°C to 50% at 50°C, with thermal shutdown activated at a case temperature of 85°C.

Duty Cycle

• Intermittent: Maximum of 20 minutes on time with a 20% duty cycle.
• Continuous: Capable of 24 hours/day operation at 100% duty cycle.

Available Options

• Modification for use as a battery charger.
• Adjustable output voltage (see Output Voltage specifications for available range).
• Transfer relay for backup battery in the event of a power failure (ERC option).

Output Voltage

• 13.6 VDC (internally adjustable between 12.6-14.5 VDC).
• Ripple: 40mV P-P (@ 110-125 / 220-250 VAC input).
• 1% Line and Load regulation (@ 110-125 / 220-250 VAC input).

Mechanical Features

• Powder-coated aluminum heat sink case for enhanced durability and heat dissipation.
• Front panel terminal block for easy and secure connections.
• Heavy-duty mounting flange for secure installation on marine vessels.
• Conformal-coated PCB to protect against moisture and corrosion.

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