Technical Information & Details for the MEAN WELL LOP-300-12 Power Supply
Output Power: 300 W (with Fan) / 180 W (Convection)
Output Voltage: 12 V DC (adj. range 11.4 – 12.6 V)
Output Current: 25 A (with Fan) / 15 A (Convection)
Input Voltage Range: 80 – 264 V AC / 113 – 370 V DC, 47 – 63 Hz
Efficiency: up to 92.5%
Ripple & Noise: ≤ 120 mVp-p
Inrush Current: max. 40 A @115 VAC / 80 A @230 VAC
No-load Power Consumption: < 0.5 W
Operating Temperature: −40 °C to +80 °C
Cooling: Free air convection or forced-air (10.98 CFM)
Protections: Short circuit, Overload, Over voltage, Over temperature
Over Voltage Category: OVC III
Isolation Voltage: 4000 V AC between Input and Output
Dimensions (L x W x H): 101.6 mm x 50.8 mm x 25.4 mm
Weight: approx. 210 g
Safety & EMC Certificates: CB, UL, TUV, EAC, CE (62368-1, 60601-1, 60335-1, 61558-1)
LED Indicator: Power On Indicator
Manufacturer Warranty: 3 Years
Information about the MEAN WELL LOP-300-12
The MEAN WELL LOP-300-12 is a high-performance, 300W low-profile open frame power supply designed to meet the rigorous demands of modern electronics. Featuring an ultra-compact 4" x 2" footprint and a height of only 1 inch (25.4mm), it delivers a remarkable power density of 37.5W/in³. This series stands out due to its versatile multi-field certifications, complying with safety standards for ITE, medical (2xMOPP), household appliances, and industrial installations. With an Over Voltage Category III (OVC III) rating, the LOP-300-12 is exceptionally robust, allowing for direct integration into power distribution panels while ensuring superior protection against voltage surges in demanding environments.
Engineered for maximum reliability, this power supply provides 180W under natural convection and can be boosted to 300W with forced-air cooling, supported by a built-in 12V auxiliary fan output. It is highly efficient, reaching up to 92.5% efficiency, which minimizes heat generation and supports a wide operating temperature range from -40 °C to +80 °C. Its unique ability to handle 150% peak loads for 3 seconds makes it perfect for applications with high inductive or capacitive start-up currents, such as motorized medical devices, industrial automation systems, and high-speed telecom equipment. The extremely low touch leakage current (<70 µA) further ensures its suitability for BF-rated medical apparatus, providing a safe and cost-effective solution for global power requirements.
Technical Information & Details about the MEAN WELL HDR-100-24N Power Supply
Output Power: 100.8 W
Output Voltage: 24 V DC (nominal)
Output Current: 4.2 A
Current Range: 0 – 4.2 A
Input Voltage Range: 85 – 264 V AC (277 V AC operational) / 120 – 370 V DC (390 V DC operational), 47 – 63 Hz
Efficiency: typ. 90 %
Ripple & Noise: ≤ 150 mVp-p
Output Voltage Adjustment Range: 21.6 – 29 V DC (extended Non‑LPS range)
Voltage Tolerance: ±2.0 %
Line Regulation: ±1.0 %
Load Regulation: ±1.0 %
Setup, Rise Time: 500 ms, 60 ms @230 V AC / 115 V AC (full load)
Hold-up Time: 30 ms @230 V AC / 12 ms @115 V AC (full load)
AC Input Current (typ.): 3 A @115 V AC / 1.6 A @230 V AC
Inrush Current: 35 A @115 V AC / 70 A @230 V AC (cold start)
No-load Power Consumption: < 0.3 W
Operating Temperature: −30 °C to +70 °C (with derating according to curve)
Operating Humidity: 20 – 90 % RH, non‑condensing
Storage Conditions: −40 °C to +85 °C, 10 – 95 % RH, non‑condensing
Cooling: fanless free air convection
Protection Features: short circuit (hiccup mode, auto recovery), overload (constant current limiting within 50–100 % of rated output voltage, auto recovery), overvoltage (shut down, re‑power to recover)
Overvoltage Protection Threshold: 30 – 36 V DC
Overvoltage Category: OVC III (up to 2000 m altitude)
Isolation Voltage: 4000 V AC between input and output
Isolation Resistance: ≥ 100 MΩ @ 500 V DC, 25 °C, 70 % RH
Dimensions (W x H x D): 70 mm x 90 mm x 54.5 mm
Weight: approx. 270 g
Housing Material: insulating plastic housing, Class II, ultra‑slim 4‑SU step‑shape
Mounting: DIN rail TS35/7.5 or TS35/15
Vibration Resistance: 10 – 500 Hz, 2 G, 60 min per axis (X, Y, Z)
Safety & EMC Certificates: UL 62368‑1, UL 508, TUV BS EN/EN 61558‑2‑16, BS EN/EN 61558‑1, IEC 62368‑1, EAC TP TC 004, BSMI CNS15598‑1, BIS IS13252, compliant with BS EN/EN 55032, BS EN/EN 55035, BS EN/EN 61000‑6‑2, BS EN/EN 61204‑3
LPS Classification: Non‑LPS (extended adjustment range, higher usable output power up to 100.8 W)
LED Indicator: Power‑On status LED
Manufacturer Warranty: 3 years
About the MEAN WELL HDR-100-24N
The MEAN WELL HDR-100-24N is the Non‑LPS version of the HDR‑100‑24 models and delivers up to 100.8 W at 24 V DC and 4.2 A in an ultra‑slim 70 mm DIN‑rail housing. Its extended 21.6–29 V adjustment range offers additional voltage headroom for long cable runs, inductive loads and demanding 24 V control circuits, going well beyond the tighter LPS‑compliant window of “blank” units. Combined with universal input, high efficiency, fanless free air convection, comprehensive protection features and broad safety/EMC approvals, HDR-100-24N is a powerful, flexible 24 V supply for industrial control systems, building automation, valves, relays, sensors and OEM applications that must fully utilize the 100 W class.