Ault Korea / Power General FLU3-40-6AD Triple Output Power Supply

The Ault Korea / Power General FLU3-40-6AD is a 40W open-frame switching power supply engineered for industrial and commercial applications requiring multiple isolated outputs. This triple-output unit accepts universal AC input (85–265 VAC) or universal DC input (100–370 VDC) with line frequency tolerance of 47–440 Hz, delivering stable regulated power across three independent channels. The supply incorporates soft-start, over-current power-limit, continuous short-circuit, and primary output over-voltage protection. Input transient protection via MOV and onboard fusing (recommended 2A/250V slow-blow) safeguard against upstream disturbances.

Technical Specifications Input & Protection

Universal AC: 85–265 VAC, 47–440 Hz

Universal DC: 100–370 VDC

Input line protection: MOV transient suppression, onboard fuse

EMI filter exceeds EN55022/FCC Class B conducted limits by 10 dB typical Output Performance

Triple DC outputs; Output 1 & 2 rated 15V (ISO) at 0.30A nominal, 0.50A maximum

Peak current ratings: 5.0A, 3.0A, and 2.0A (<60 seconds, <10% duty cycle)

Line regulation: 0.5% typical; Load regulation: 1.0% typical; Cross regulation: 1.0% typical

Voltage tolerance: 4.0% typical

Output ripple and noise: 1% peak-to-peak maximum

Efficiency: 62–75% typical at nominal input and load

Hold-up time: 16 ms (115 VAC), 32 ms (230 VAC) minimum at full load Thermal

Operating range: −20°C to +70°C

Cooling: Convection adequate; forced air recommended in confined spaces

De-rating: 2%/°C linear from +50°C to +70°C

Temperature coefficient: ±0.05%/°C across operating range

Key Features

Soft-start circuit reduces inrush current and stress on input components

Continuous short-circuit protection on all outputs

Dual input acceptance (AC and universal DC) eliminates supply compatibility concerns

Over-current power-limit preserves load integrity during transient conditions

Low output ripple (1% pk-pk max) suitable for noise-sensitive analog circuits

Typical Applications Industrial control systems, distributed power architectures, multi-rail embedded systems, laboratory instrumentation, and OEM equipment requiring isolated triple outputs with universal input flexibility.

Compatibility & Integration The FLU3-40-6AD integrates into open-frame installations where space permits convection cooling. Convection operation is standard; forced-air cooling extends thermal margin in restricted enclosures. Triple isolated outputs enable independent load regulation without cross-rail coupling.