MEAN WELL IRM-03 Series 3.3V 3W AC-DC Power Supply 900mA

The MEAN WELL IRM-03 Series is a compact, high-reliability, 3W miniature AC to DC power supply module, engineered for efficiency and stability in a wide range of applications. This PCB-mount unit accepts a universal input voltage from 85VAC to 305VAC, making it suitable for global use without the need for manual voltage switching. Its exceptionally low no-load power consumption of less than 0.075W contributes to energy savings and meets stringent efficiency standards.

Designed for hassle-free integration, the module complies with EN55032 Class B electromagnetic interference (EMI) limits without requiring any additional external filtering components. This built-in compliance simplifies the design process and reduces overall system cost. Comprehensive protection features are included as standard, offering safeguards against short circuits, overloads, and overvoltage conditions, thereby enhancing the longevity and safety of both the power supply and the connected equipment.

The unit employs a Class II isolation design, meaning it does not require a protective earth connection for safety, and incorporates built-in EMI filtering for cleaner power output. Cooling is achieved through efficient free air convection, eliminating the need for fans or heatsinks in most environments and ensuring silent, maintenance-free operation. Its compact dimensions (30mm x 25mm x 40mm) and lightweight PCB-mount design make it an ideal choice for space-constrained applications within IT equipment, industrial controls, and embedded systems.

Key Features & Specifications

• Universal Input: 85-305VAC input range for worldwide compatibility.
• Fixed Output: Provides a stable 3.3VDC output at up to 900mA.
• High Efficiency: Ultra-low no-load consumption (<0.075W).
• Built-in Compliance: Meets EN55032 Class B EMI standards.
• Robust Protections: Integrated short circuit, overload, and overvolt