Newmar 115-24-18CD Power Supply
Newmar 115-24-18CD Power Supply

Newmar 115-24-18CD Power Supply MPN - 115-24-18CD

$2,492.00
$2,741.20
$2,492.00

MPN : 115-24-18CD

SKU: 102290
Availability: In stock
Product type: Automotive/RV | Inverters,Electrical | Inverters
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Linear AC-to-DC power supply: 115/230 V AC in, 24.5 V DC out
18 A model class; confirm current ratings before ordering
1% regulation, 70 mV peak-to-peak ripple; fan-cooled CD model
Newmar 115-24-18CD Power Supply

Newmar 115-24-18CD Power Supply MPN - 115-24-18CD

$2,741.20 $2,492.00
Newmar 115-24-18CD Power Supply

Newmar 115-24-18CD Power Supply MPN - 115-24-18CD

$2,741.20 $2,492.00

    The Newmar 115-24-18CD is a 115-series DC power supply. It converts AC power from shore or a generator into regulated 24-volt DC, the reverse of what an inverter does. It is designed for 24-volt communication and navigation equipment on commercial vessels and in other demanding installations, and its linear circuit design gives noise-free output and long service life. Output is 24.5 V DC nominal, internally adjustable 21–27.5 V DC, held within 1% across rated line and load conditions, with ripple of 70 mV peak-to-peak at nominal input. The 18 in the model number indicates the unit's current class. Please confirm the exact intermittent and continuous current ratings, dimensions and weight with us before ordering.

    The input accepts 115 or 230 V AC nominal, selectable for 105–125 or 210–250 V AC at 50–60 Hz, and output derates to 50% below 110 V or 220 V AC input. Protection includes overvoltage protection, current limiting at 105% of the intermittent rating, thermal overload protection, and input and output fusing. Large heat-sink fins dissipate semiconductor heat and a thermally activated cooling fan adds airflow on this CD model, which operates from 0 to 65 °C with output derating linearly from 100% at 50 °C to 50% at 65 °C. Thermal shutdown occurs at 85 °C case temperature. The case is powder-coated, corrosion-resistant aluminum with integral shock mounts, a conformal-coated circuit board, a front-panel terminal block and a heavy-duty mounting flange.

    Size the supply to your equipment's demand. Continuous loads such as navigation electronics must stay within the continuous rating, while transmit peaks from radios can use the intermittent rating within its duty-cycle limits. Options listed for this series include modifying the unit to act as a battery charger, adjusting the output voltage within its range, and adding an ERC transfer relay to switch to a backup battery. If you need DC equipment to keep running when AC fails, compare the Newmar Power-Pac, which combines a power supply with built-in backup batteries.

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    Installation & Compatibility Guides

    Match the Power Supply to Your DC Equipment

    The 115-24-18CD converts AC to regulated 24.5 V DC. Check these six points before you buy.

    1. Confirm You Need AC-to-DC

      This unit powers DC equipment from AC. If you need AC from batteries, you need an inverter instead.

    2. Match 24 V Equipment

      Output is 24.5 V DC nominal, adjustable within 21–27.5 V DC. Check your equipment's input range.

    3. Size Continuous and Peak Current

      Confirm this model's intermittent and continuous ratings with us, then size steady and peak loads against them.

    4. Set the AC Input

      Select 115 or 230 V AC input before connecting. Output derates to 50% on low line voltage.

    5. Plan Cooling and Mounting

      This CD model has a thermostatic fan; keep airflow clear and use the mounting flange.

    6. Consider Backup Power

      For uninterrupted DC when AC fails, compare the Newmar Power-Pac or ask about the ERC transfer-relay option.

    Newmar Power Supply or Power-Pac?

    The 115-24-18CD is a straight AC-to-DC power supply. It delivers regulated, noise-free 24.5 V DC as long as AC power is present. The Newmar Power-Pac adds built-in sealed lead-acid backup batteries and switches to them automatically if AC fails, keeping radios and navigation equipment powered.

    Choose by output voltage first, then by the continuous and peak current your equipment draws. Within the 115 series, compare the 115-24-10 or the 115-24-35CD.

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      If you need AC power from batteries rather than DC from AC, browse inverters here.

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    3. Explore Automotive & RV Accessories

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    Frequently Asked Questions

    What does the Newmar 115-24-18CD do?
    It converts 115 or 230 V AC into regulated 24.5 V DC to power 24-volt equipment. It is a power supply, not an inverter.
    What is the output voltage?
    24.5 V DC nominal, internally adjustable 21–27.5 V DC.
    What current can it supply?
    It is an 18 A-class model. Please confirm the intermittent and continuous ratings with us before ordering.
    Can it run on 230 V AC?
    Yes. Input is selectable for 105–125 or 210–250 V AC at 50–60 Hz.
    How clean is the output?
    Output is held within 1% under rated line and load, with 70 mV peak-to-peak ripple, from a linear design suited to radios and navigation electronics.
    Does it have a cooling fan?
    Yes. This CD model has a thermally activated cooling fan and is rated for full output to 50 °C.
    Can it charge a battery?
    Options listed for this series include a battery-charger modification and an ERC transfer relay for backup batteries. Ask us before ordering if you need either.
    Will it keep my equipment running during an AC outage?
    No. It needs AC input. For backup, compare the Newmar Power-Pac, which includes batteries.

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