MEAN WELL EPP-120S-12 120W Medical & ITE Open Frame AC/DC Power Supply 12V 10A with Active PFC

In a compact medical cart or a space-constrained industrial controller, the EPP-120S-12 delivers stable 12V DC power from any worldwide AC mains. This open-frame supply from MEAN WELL combines 120W output with dual medical (2xMOPP) and ITE safety certifications, making it a dependable core for devices that cannot compromise on isolation or reliability.

Key specifications

• Output: 12V DC, 10A, 120W maximum
• Input: 80–264 VAC (113–370 VDC), active PFC
• Efficiency: Up to 93%
• Form factor: Open frame, convection cooled (100W) or forced air (120W)
• Safety: IEC/EN/UL 60601-1 (medical), IEC/EN/UL 62368-1 (ITE)
• Isolation: 4000 VAC input to output, 2 x MOPP
• Protections: Short circuit, overload, over voltage, over temperature
• Operating temperature: -30°C to +70°C
• Ripple & noise: 100mVp-p
• No-load power consumption: <0.3W
• MTBF: >1,000,000 hours per MIL-HDBK-217F

Why choose it

This power supply meets stringent medical safety requirements while also satisfying ITE standards, so one model can serve both patient-contact and industrial applications. Active PFC keeps harmonic currents within EN61000-3-2 Class C limits, and the high efficiency reduces heat and energy costs. The wide input range means it operates reliably from unstable mains or generator power, and the compact open-frame design fits easily into tight enclosures.

Ideal use cases

• Medical devices requiring 2 x MOPP isolation, such as monitors, diagnostic equipment, or therapy devices
• Industrial automation, test and measurement instruments, and communication systems
• Embedded systems and OEM equipment needing a reliable, certified AC/DC module
• Applications with limited airflow where convection cooling up to 100W is sufficient

Good to know

The EPP-120S-12 includes built-in protections against short circuits, overloads, over voltage, and over temperature, ensuring long-term durability. It is supplied as an open-frame unit, so integration into a final enclosure is required. The operating temperature range extends from -30°C to +70°C, and the supply can deliver full 120W with 10CFM forced air, or 100W with natural convection. Compliance with harmonic current standards and low no-load consumption make it a forward-looking choice for energy-conscious designs.