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Mean Well 99.9W High Reliable Multi-Industries Power Supply 27V 3.7A
The MEAN WELL NSP-100 series is a 100W high-reliability AC/DC enclosed power supply designed for multi-industry applications, including industrial automation, telecommunications, security systems, and medical devices. Featuring a universal 85–305VAC input with active PFC and efficiency up to 92%, it delivers stable power performance with ultra-low standby consumption below 0.5W. The fanless design and compact 99×97×30 mm form factor enable reliable operation from -40°C to +85°C. With 200% peak power capability, remote ON/OFF control, and comprehensive protections, the NSP-100 series ensures long-term performance under demanding conditions while complying with IEC/EN/UL 62368-1, 60601-1 (BF rated, 2×MOPP), and other global safety standards.
Key Features
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BrandMean Well
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SeriesNSP Series
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Power Rating99.9 Watt
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Output Voltage27 Volt
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Rated Current3.7 Ampere
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Input Voltage85V~305V
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No of Output1
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Standards MetBSMI,CB,CCC,CE,EAC,RCM,TUV,UL
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Operation ModeConstant Voltage
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Operating Temperature-40°C~85°C
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Warranty5 Year
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Length3.9 in
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Width3.82 in
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Height1.18 in
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Weight0.66 lb
::specification::
Frequently Asked Questions
What output does the Mean Well NSP-100-27 provide?
The NSP-100-27 is a 99.9W enclosed AC/DC power supply with a 27V DC output rated at 3.7A. It is designed for applications that need a stable 27V supply in a compact, fanless form factor.
What kinds of applications is the NSP-100-27 intended for?
This model is designed for multi-industry use, including industrial automation, telecommunications, security systems, and medical devices. Its high-reliability construction, wide input range, and broad safety certifications make it suitable for demanding commercial and industrial equipment.
Can the NSP-100-27 be used in medical or safety-sensitive equipment?
The NSP-100-27 is certified to IEC/EN/UL 60601-1 and is described as BF rated with 2×MOPP compliance. That makes it a strong candidate for medical-related equipment where those approvals are required, although final suitability still depends on the end-product design and certification path.
How does the NSP-100-27 perform in harsh temperature conditions?
This power supply is rated for operation from -40°C to +85°C, with derating above +60°C. Its fanless design and conformal coated PCB support reliable use in challenging industrial environments where dust, temperature variation, or maintenance access may be concerns.
What makes the NSP-100-27 different from a standard 100W enclosed power supply?
Compared with a basic 100W enclosed supply, the NSP-100-27 adds high-reliability features such as active PFC, up to 92% efficiency, under 0.5W no-load consumption, 200% peak power for 5 seconds, and remote ON/OFF control. It also carries a broader set of safety approvals for industrial, household, laboratory, and medical-oriented applications.
Is the NSP-100-27 a good fit for always-on equipment or low-maintenance systems?
Yes. The fanless design supports quiet, maintenance-free operation, while its efficiency of up to 92% and no-load consumption below 0.5W help reduce wasted energy in continuously powered systems. The 5-year warranty also supports long-service applications.
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