Technical Information & Details for MEAN WELL NPF-40D-20 Power Supply
- Output Power: 40.00 W
- Output Voltage: 20 V DC (Constant Current Region: 12 – 20 V)
- Output Current: 2.00 A
- Input Voltage Range: 90 – 305 V AC / 127 – 431 V DC, 47 – 63 Hz
- Efficiency: 88%
- Current Ripple: 5.0% max. @ rated current
- Inrush Current: Cold start 50 A / 230 V AC
- No-Load Power Consumption: < 0.5 W (Standby)
- Operating Temperature: −40 °C to +85 °C (Case temperature Tcase)
- Cooling: Fanless free air convection
- Protections: Short circuit, Overload (Constant current limiting), Over voltage, Over temperature
- Ingress Protection: IP67
- Isolation Voltage: 3750 V AC (Input/Output)
- Dimensions (H x W x D): 35 mm x 53 mm x 150 mm
- Weight: approx. 490 g
- Safety & EMC Certifications: UL8750 (Type HL), CSA C22.2, ENEC EN61347-1, EN61347-2-13, IP67, BS EN/EN55015
- Dimming Function: 3-in-1 dimming (0–10VDC, 10V PWM signal, resistance; dim-to-off)
- Manufacturer Warranty: 5 years
Information about MEAN WELL NPF-40D-20
Combining rugged housing technology with advanced driver circuitry, the MEAN WELL NPF-40D-20 offers high-efficiency constant current regulation for sophisticated lighting architectures. Sealed within an IP67 rating enclosure, this fanless power supply operates smoothly through extreme temperature swings ranging from −40 °C up to +85 °C. Integration flexibility is driven by the built-in 3-in-1 dimming interface supporting analog, PWM, and resistance signals down to full turn-off, backed by an active PFC controller. Hazardous location compliance via UL8750 Type HL and a long-term 5-year warranty make it an exceptional choice for decorative, panel, and commercial light fittings.