HB28-1-A+G is a single-output linear DC power supply designed for commercial applications requiring a regulated 28V output at 1A current. The unit accepts worldwide AC input voltages of 100, 120, 215, 230, and 240 Vac at 47 to 63 Hz, with built-in remote sensing and open sense lead protection. It features excellent stability of ±0.05% for 24 hours after warmup, a temperature coefficient of ±0.019%/°C maximum, and operates from 0 to 50°C at full rating with linear derating to 40% at 70°C. The power supply is UL/CSA and TUV/IEC approved to UL/CSA 60950 and EN/IEC60950-1 standards, exceeds FCC and CISPR22 Class B conducted emissions requirements, and is RoHS compliant. Common applications include instrumentation, test equipment, and industrial systems requiring stable DC power with international safety certifications.