Ault Korea / Power General FLU2-40-4 Dual Output Power Supply

The Ault Korea / Power General FLU2-40-4 is a 40W dual output open-frame switching power supply engineered for reliable DC delivery across diverse industrial and electronic systems. Built on a flyback converter topology with current-mode control, this unit accepts universal AC input (85-265 VAC, 47-440 Hz) or DC input (36-75 VDC nominal 48V), delivering flexibility across multiple power source configurations. The supply operates with zero minimum load requirement and integrates MOV transient protection plus a recommended 2A/250V slow-blow input fuse.

Technical Specifications

Output Power: 40W maximum

Input Voltage (AC): 85-265 VAC, single phase, 47-440 Hz

Input Voltage (DC): 36-75 VDC (48V nominal)

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

Hold-Up Time: 16 ms minimum (115 VAC, full load); 32 ms minimum (230 VAC, full load)

MTBF: >200,000 hours (MIL-HDBK 217F, ground benign, 25°C)

Operating Temperature: -20°C to +70°C

Primary Output Adjustment: ±5%

Peak Output Current: Varies by sub-model (5.0A, 3.0A, or 2.0A typical)

Key Features

Dual output configuration with fixed auxiliary outputs

EN55022/FCC Class B compliant EMI filter exceeding conducted requirements by 10 dB typical

Over-current/short-circuit protection with continuous operation

Over-voltage protection on primary output

Soft-start circuit standard

Power-limit overload protection

Convection cooling; forced air recommended for confined installations

Typical Applications

Industrial control systems with dual voltage rails

Telecommunications and networking equipment

Factory automation and process control

Multi-rail embedded power architectures

Compatibility & Integration The FLU2-40-4 integrates into open-frame designs requiring compact footprint and universal input capability. Dual outputs accommodate primary and auxiliary rail requirements simultaneously. Output voltage configuration and specific current ratings depend on sub-model suffix designation (e.g., -1AD, -4AD). Load regulation measured at 115 VAC or 230 VAC; multi-output regulation tested with primary output at 60% nominal load and auxiliary outputs at nominal load.