SPECIFICATIONS |
OUTPUT |
|
Model | MS-25-5 | MS-25-12 | MS-25-15 | MS-25-24 |
DC Voltage | 5V | 12V | 15V | 24V |
Rated Current | 5A | 2.1A | 1.7A | 1.1A |
Current Range | 0-5A | 0-2.1A | 0-1.7A | 0-1.1A |
Rated Power | 25W | 25.2W | 25.5W | 26.4W |
Ripple & Noise | 50mVp-p | 100mVp-p | 100mVp-p | 100mVp-p |
Voltage Adj. Range | +10,-5% | ±10% | ±10% | ±10% |
Voltage Tolerance | ±2% | ±1% | ±1% | ±1% |
Inlet Stability | ±0.5% | ±0.5% | ±0.5% | ±0.5% |
Load Stability | ±1% | ±0.5% | ±0.5% | ±0.5% |
Setup, Rise, Hold Up Time | 800ms,50ms,10ms/115VAC 300ms,50ms,80ms/230VAC |
INPUT |
|
Voltage Range | 85~132VAC/170~264VAC selected by switch 47~63Hz; 240~370VDC |
AC Current | 0.7A/115V 0.30A/230V |
Efficiency | 72%/115VAC | 76%/115VAC | 77%/115VAC | 80%/115VAC |
Inrush Current | Cold-start current 15A/115V 30A/230V |
Leakage Current | <0.75mA/240VAC |
PROTECTION |
|
Over Load | 105%~150% |
Protection type: plusing hiccup shutdown Reset: auto recovery |
ENVIRONMENT |
|
Working Temp., Humidity | -10℃~+60℃(Refer to output derating curve), 20%~90%RH |
Storage Temp., Humidity | -20℃~+85℃,10%~95%RH |
Temp. Coefficient | +-0.03%/°C(0~50°C) |
Vibration | 10~500Hz,2G 10min,/1cycle,Period for 60min,each axes |
SAFETY |
|
Withstand Voltage | I/P-O/P: 1.5KVAC I/P-FG: 1.5KVAC O/P-FG: 0.5KVAC |
Isolation Resistance | I/P-O/P, I/P-FG, O/P-FG: 100M Ohms/500VDC |
STANDARD |
|
Safety Standard | UL1012TUV EN60950(IEC950,UL1950)Approved |
EMC Standard | CLSPR22(EN55022),IEC801-2,3,4,IEC555-2 Verification |
OTHERS |
|
Dimension | 85*58*38mm(L*W*H) |
Weight | 0.2Kg |
NOTE |
|
1.The testing condition for the parameter above is: 230VAC input, rated load, 25℃ 70% RH.Humidity. 2.Error.include the setting error, line stability and load stability. 3.Wave test: adopting “A12”double wire for 20MHz,and 0.1UF&47UF capacitor short-circuit for interrupting. 4.Inlet voltage stability test: when is over load, the lowest voltage of inlet is up to the highest voltage. 5.Load stability test: the load is from 0% to 100%. |
Product Overview
Leyu Electric (Yueqing Leyu Electric Automation Co., Ltd.) launches the MS-25 series, an economic 25W single‑output switching power supply available in four common voltage models: 5V, 12V, 15V, and 24V (the 24V model has a rated current of 1.1A). The whole series features a compact metal case measuring only 85×58×38mm and weighing 0.2kg, making it easy to install in space‑limited equipment or control cabinets.
Key Features
Ultra-Low Ripple & Noise for Clean Power
The 25W MS-25 AC to DC Single Output Power Supply maintains minimal ripple and noise, with a maximum of 100mVp-p (and 50mVp-p for the 5V model). This low interference ensures clean power delivery, which is critical for sensitive electronics like communication modules, precision sensors, or audio equipment—preventing signal distortion or performance glitches.
Flexible Voltage Tuning & Tight Tolerance
It offers a voltage adjustment range of ±10% (+10%, -5% for the 5V model), allowing users to fine-tune output voltage to match their equipment’s exact needs. Additionally, it features tight voltage tolerance (±1% for 12V/15V/24V models; ±2% for 5V) and line stability of ±0.5%, ensuring consistent output even when input voltage fluctuates (e.g., during peak power hours).
Reliable Line & Load Stability
With load stability of ±0.5% (±1% for 5V), the power supply keeps output voltage steady as the load varies from 0% to 100%. This is essential for devices with dynamic power demands, such as LED drivers or industrial PLCs (Programmable Logic Controllers), avoiding voltage drops that could cause equipment malfunctions or data loss.
Fast Startup & Extended Hold-Up Time
The 25W MS-25 features a rapid startup time of 300ms (230VAC) and 800ms (115VAC), enabling connected devices to power up quickly. It also provides a hold-up time of 90ms (230VAC) and 12ms (115VAC), maintaining power during short input interruptions—critical for preventing system shutdowns in applications like routers or industrial controls.
Safe Inrush Current & Durable Components
Cold-start inrush current is limited to 30A (230VAC) and 15A (115VAC), protecting both the power supply and the input grid from sudden surges. It also uses 105°C high-temperature output capacitors, ensuring durability even in harsh operating environments. A built-in EMI filter complies with CLSPR22 (EN55022) and IEC801-2, 3, 4 standards, reducing electromagnetic interference and meeting global regulatory requirements.
Comprehensive Over-Load Protection
The power supply includes over-load protection that triggers at 105%~150% of the rated load. It uses a hiccup shutdown mechanism with auto-recovery—resuming operation automatically once the overload is resolved—eliminating the need for manual reset and maximizing system uptime.
Product Advantages
Compared to similarly priced products, the MS-25 series offers the following key benefits:
Higher temperature‑rated output capacitors: 105°C capacitors withstand long‑term high‑temperature operation better than common 85°C parts.
More reliable through burn‑in testing: Every unit is 100% full‑load burn‑in tested before shipment to eliminate early failures.
Low ripple and noise: With built‑in EMI filtering, ripple is well controlled for a 25W power supply, making it suitable for applications that require clean power.
Full safety certifications: Compliant with UL1012, TUV EN60950 (IEC950, UL1950), and EMC standards (EN55022, IEC801‑2,3,4, etc.), facilitating export to North America and Europe.
Applications
The MS-25 series is ideal for:
Small industrial control cabinets, PLC auxiliary power
LED decorative lighting, advertising light boxes
CCTV cameras, access control systems (centralized power supply)
Instrumentation, test equipment
Home appliances, office automation equipment
FAQ
Q: Is the actual output power of the MS‑25‑24 25W or 26.4W?
A: The rated power is 25W, but under full‑load testing it can deliver up to 26.4W. For long‑term reliability, we recommend keeping the continuous load at or below 25W.
Q: How do I use the input voltage selector switch?
A: There is a slide switch on the side of the power supply. When the input voltage is 85‑132VAC (e.g., 110V region), set it to the 115V position. When the input voltage is 170‑264VAC (e.g., 220V region), set it to the 230V position. If set incorrectly, the power supply may fail to start or could be damaged.
Q: Does the overload protection require a power‑off to recover?
A: No. The MS‑25 series uses hiccup mode protection. Once the overload condition is removed, the output automatically recovers without needing to cycle power.
Q: Can I connect two of these power supplies in parallel to increase current?
A: Direct paralleling is not recommended. If higher current is needed, please choose a higher‑wattage model from the Leyu series or a single‑output model with a higher current rating.
Q: How long is the warranty for the MS‑25 series?
A: 2 years from the date of manufacture. Non‑artificial defects are covered by free repair or replacement.
Company Introduction
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