Samlex 200W Fully Isolated DC-DC Converter - 16A - 9-18V Input - 12V Output

The Samlex 200W Fully Isolated DC-DC Converter is an essential power management solution for automotive electrical systems where load isolation and voltage regulation are critical. Designed for vehicles running dual battery setups, auxiliary power systems, or complex electronics upgrades, this converter delivers clean, stable 12V output from variable input sources ranging from 9–18V. Whether you're installing auxiliary lighting, winches, amplifiers, or communication equipment, this Samlex unit ensures your auxiliary circuits remain electrically isolated from your primary vehicle power, preventing ground loops and voltage spikes that can damage sensitive components.

The IDC-200A-12 uses full galvanic isolation between input and output stages, a critical feature that breaks ground continuity and eliminates noise interference in multi-system installations. With a 16-amp maximum output capacity, the converter supplies up to 200 watts of continuous power, making it suitable for moderate to high-draw auxiliary circuits without voltage sag. The wide input range (9–18V) accommodates everything from depleted auxiliary batteries to high-output alternator spikes, protecting downstream equipment through internal regulation and filtering. The compact form factor measuring 4 x 2 x 7 inches and weighing just 2.4 lbs allows discreet mounting in engine bays, under-seat battery boxes, or enclosed auxiliary power panels.

Automotive enthusiasts and professional installers rely on isolated DC-DC converters when building off-road recovery rigs, expedition vehicles, or premium audio systems where ground isolation prevents alternator whine and RF interference. This Samlex converter is ideal for applications requiring redundant or independent 12V rails—such as powering CB radios, GPS plotters, aux fuel pumps, or redundant cooling fans—without compromising the stability of engine management or primary vehicle electronics. Installation requires proper fusing on both input and output sides and adequate ventilation; the unit operates efficiently across its rated input window and is engineered to handle the thermal and electrical stresses of continuous duty. For mechanics and fabricators demanding reliable voltage conversion with true electrical isolation, the Samlex 200W delivers professional-grade performance at a practical price point.