• Output Power: 240 W
• Output Voltage: 12 V DC
• Output Current: 20 A
• Input Voltage Range: 250 – 1500 Vdc ultra-wide input
• Efficiency: Up to 91%
• Ripple & Noise: ≤ 120 mVp-p
• Inrush Current: Max 500 A @ 1500 Vdc (Cold start)
• No-load Power Consumption: Not specified (High-efficiency design)
• Operating Temperature: −40 °C to +80 °C (Derating above +55 °C)
• Cooling: Fanless design, free air convection
• Protection Functions: Short circuit, Overload, Over voltage, Over temperature, Input reverse polarity, Under voltage lockout
• Over Voltage Category: OVC II
• Isolation Voltage: 4000 V AC reinforced isolation (I/O)
• Dimensions (L x W x H): 237 mm x 100 mm x 41 mm
• Weight: Approx. 1100 g
• Safety & EMC Certificates: UL1741, IEC62109-1, CE, UKCA, EAC
• Voltage Adj. Range: 12 V – 15 V DC
• Manufacturer Warranty: 3 Years

Information about the MEAN WELL RSDH-300-12

The MEAN WELL RSDH-300-12 is a high-reliability, enclosed-type DC-DC converter engineered to handle the most rigorous high-voltage environments. It features a remarkable 6:1 ultra-wide input range of 250 to 1500 Vdc, making it a critical component for large-scale renewable energy systems. This unit is built to survive harsh conditions, boasting the ability to withstand 1700 Vdc surge inputs for up to 10 seconds and providing 4 kV AC high isolation through its reinforced insulation design. The fanless, half-encapsulated construction ensures peak performance without mechanical noise or failure points, even in extreme temperatures ranging from -40 °C to +80 °C. Furthermore, its ability to operate at altitudes up to 5000 meters and its compliance with UL1741 industrial standards make it indispensable for solar power generation, wind power systems, and electric vehicle charging piles. With its slim 1U low profile and comprehensive protections, including DC input reverse polarity and automatic hiccup-mode recovery, the RSDH-300-12 delivers a stable and secure power solution for centralized DC bus applications and modern energy storage systems (ESS).