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Samlex

Samlex SDC-5 24V to 12V 5A DC-DC Converter

SKU CH-Y1SW-MACGA

A non-isolated step-down converter that changes 24 VDC input into a regulated 13.8 VDC output at 5 A with short-circuit and reverse-polarity protection

  • Converts 24 VDC to regulated 13.8 VDC for 12 V equipment
  • High-efficiency switch-mode design reduces heat and power loss
  • Compact 1.93 x 3.47 x 2.68 in size fits tight spaces
  • Built-in short-circuit, reverse-polarity and over-voltage protection safeguards connected gear
  • Suitable for trucks, buses, marine and earth-moving applications

What this converter does

The Samlex SDC-5 steps a nominal 24 VDC input down to a regulated 13.8 VDC output at up to 5 amps. It accepts an input range of 20 to 35 VDC and is built for negative-ground systems in trucks, buses, marine and earth-moving equipment.

Input limits and protection

The unit operates from 20 to 32 VDC and includes short-circuit, reverse-polarity and over-voltage protection. Because it is non-isolated there is no galvanic separation between input and output, so the ground reference is shared across the circuit.

Output current decides fit

The converter delivers a maximum of 5 amps at 13.8 VDC, which determines whether it can power a given 12-volt radio, lighting or sound system. Loads that draw more current will need a higher-rated supply.

How it compares

Measured against everything we stock in Jump Starters, Chargers & Power Packs, at today’s prices. Recalculated every night.

Price $36.99
Pricier than about 83% of the 1,744 comparable items (median $14.99).

Specifications

Product
Brand nameSamlex
Model nameSDC-5

Questions about this item

How do I decide which Samlex SDC-5 converter to choose?

The SDC-5 is a single model with a fixed 5 A output, so no version or capacity choice exists.

What does the 13.8 VDC, 5 A output mean once installed in a 24 V system?

It delivers a regulated 13.8 VDC at up to 5 A for CB radios, lighting or sound systems, with short-circuit and over-voltage protection.

What input range does the non-isolated step-down design accept, and what does that cap in practice?

It accepts 20–32 VDC, limiting use to negative-ground 24 V nominal systems and preventing operation on 12 V or higher-voltage networks.

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