• Output Power: 400 W (Convection Cooling)
• Output Voltage: 24 V DC (Adjustable 22.8 – 25.2 V)
• Output Current: 16.7 A
• Input Voltage Range: 90 – 264 V AC / 127 – 370 V DC, 47 – 63 Hz
• Efficiency: Up to 88.5%
• Ripple & Noise: ≤ 240 mVp-p
• Inrush Current: Max. 25 A @115 VAC / 40 A @230 VAC
• Power Factor (PFC): PF > 0.95 @230 VAC / PF > 0.98 @115 VAC
• Operating Temperature: −30 °C to +70 °C
• Cooling: Fanless design (natural convection)
• Protection Functions: Short circuit, Overload, Over voltage, Over temperature
• Overvoltage Category: OVC II (up to 5000m), OVC III (up to 2000m)
• Isolation Voltage: 4000 V AC (I/P-O/P), 2x MOPP certified
• Dimensions (L x W x H): 250 mm x 89 mm x 37 mm (1U Low Profile)
• Weight: Approx. 880 g
• Safety & EMC Certificates: UL62368-1, EN62368-1, EAC, CB, CE
• LED Indicator: Power On Indicator
• Manufacturer Warranty: 3 Years

Information about the MEAN WELL UMP-400-24

The MEAN WELL UMP-400-24 represents a breakthrough in 1U height modular power supply technology, engineered for silence and versatility in demanding industrial and medical sectors. Its sophisticated fanless design allows for a maximum output of 400W via convection cooling, eliminating noise and mechanical failure risks associated with fans. This makes the unit a perfect fit for diagnostic or biological facilities, as well as test and measurement systems where vibration and acoustic interference must be minimized. The unique modular configuration capability sets it apart, allowing users to transform the 24V main output into a multi-channel system by integrating NID series DC-DC converters for additional voltage rails like 5V or 12V.

Beyond its power density, the UMP-400-24 is built to the highest safety specifications, including 2xMOPP medical isolation levels and ITE 62368-1 standards. The low-profile 1U chassis ensures it occupies minimal space in modern automation machinery and telecommunication equipment. With an impressive efficiency rating of 88.5% and a wide operating temperature range of -30 to +70 °C, it provides stable performance even in harsh environmental conditions. Backed by a 3-year manufacturer warranty and featuring built-in active PFC, this power supply is a high-reliability solution for professionals seeking flexible, high-performance power distribution in a compact form factor.