1. Product Overview
The COSIC DC Power Supply series, featuring core models including 4NIC DC50, 4NIC DC75, 4NIC DC100, 4NIC DC125, 4NIC DC150, 4NIC DC200, 4NIC DC250, 4NIC DC300, 4NIC DC400, and 4NIC DC500, is a high-performance, industrial-grade direct current power supply solution designed to meet the diverse power needs of professional scenarios. With input voltage options of 12V and 24V (partial models support single 24V input) and output voltage ranges covering 5V, 12V, 13.8V, 15V, 24V, 28V, and 48V, the series delivers output current from 2A to 100A, with size specifications ranging from 86×41×12.7mm to 500×410×290mm. This comprehensive product lineup is engineered to solve the core pain points of unstable power supply, mismatched voltage/current, and poor adaptability to harsh working environments, providing reliable, efficient, and customizable power support for industrial production, electronic equipment testing, and precision instrument operation.
2. Key Features
All models in the COSIC 4NIC series adopt high-precision PWM (Pulse Width Modulation) control technology, with a voltage regulation accuracy of ±0.5% and current regulation accuracy of ±1%, ensuring stable output even under fluctuating input voltage (100-240V AC). The output voltage and current can be adjusted within the rated range to match the specific requirements of different devices, eliminating the risk of equipment damage caused by overvoltage or overcurrent. For example, the 4NIC DC75 (output ±5V ±7.5A) supports dual-polarity output, making it suitable for precision analog circuits and electronic component testing.
3. Structural Characteristics
The COSIC 4NIC DC Power Supply series features a compact, modular design with a rugged metal case (aluminum alloy or cold-rolled steel) that provides excellent electromagnetic interference (EMI) shielding and mechanical protection. The case is designed to resist dust, moisture, and vibration, meeting the IP30 protection standard. The size varies by model: small models like the 4NIC DC50 (86×41×12.7mm) are suitable for space-constrained environments (e.g., embedded systems), while large models like the 4NIC DC960F (340×240×155mm) are designed for high-power industrial applications.
4. Applicable Working Conditions
The COSIC 4NIC DC Power Supply series is designed to adapt to a variety of industrial and professional working environments, with the following technical parameters to ensure reliability:
- Ambient temperature: -10°C ~ 50°C (operating); -40°C ~ 70°C (storage)
- Relative humidity: 10% ~ 90% (non-condensing)
- Input voltage range: 100V ~ 240V AC, 50/60Hz
- Altitude: ≤ 2000m (above 2000m, derating by 1% per 100m)
- Electromagnetic compatibility (EMC): Complies with IEC 61000-4-2 (ESD), IEC 61000-4-3 (RS), and IEC 61000-4-5 (Surge) standards
5. Maintenance and Care Recommendations
To ensure the long-term stable operation of the COSIC 4NIC DC Power Supply, it is recommended to perform routine inspections every 3 months: check the power cord for damage, clean the fan and heat sink (remove dust with compressed air), and verify the accuracy of voltage and current output using a multimeter. For models used in dusty environments (e.g., factories), increase the inspection frequency to once a month.
We supply the following spare parts:
| COSIC DC Power Supply | |||
| Model | Size（mm） | ||
| Input | out put | ||
| 4NIC DC50 | 24V | 5VlQA(msps) | 86X41X12.7 |
| 4NIC DC50 | 12V24V | 5V10A | 120x85x30 |
| 4NIC DC50 | 12V24V | 5V10A | 150x120x50 |
| 4NIC DC50 | 12V24V | 5V8A-12VQ. 8A | 150x120x50 |
| 4NIC—DC75 | 12V24V | 5Vl 5A (msps) | 86x41x12.7 |
| 4NIC DC75 | 12V24V | 5Vl 5A | 130x120x50 |
| 4NIC DC75 | 12V24V | 5Vl 5A | 160x120x50 |
| 4NIC DC75 | 12V24V | ±5V±7- 5A | 160x120x50 |
| 4NIC—DC75 | 12V24V | 5V10A-12V2A | 160x120x50 |
| 4NIC–DC100 | 12V24V | 5V20A | 180x120x50 |
| 4NIC DC100 | 24V | 5V20A(msps) | 86X72X12.7 |
| 4NIC DC100 | 24V | 5V20A | 140x120x50 |
| 4NIC DC100 | 12V24V | 5Vl5A—5V5A | 180X120X50 |
| 4NIC DC99 | 12V24V | 5V15Aqi 2V2A | 180x120x50 |
| 4NIC DC125 | 12V24V | 5V25A | 190X120X50 |
| 4NIC DC125 | 12V24V | 5V20A-5V5A | 200x120x50 |
| 4NIC DC124 | 12V24V | 5V20A-12V2A | 190X120X50 |
| 4NIC DC150 | 12V24V | 5V30A | 200x120x50 |
| 4NIC-DC150 | 12V24V | 5V24A 5V6A | 200X120X50 |
| 4NIC DC156 | 12V24V | 5V24A-12V3A | 200x120x50 |
| 4NIC DC200 | 12V24V | 5V40A | 220X120X50 |
| 4NIC–DC200 | 12V24V | 5 V 30 a—5v10a | 200X140X50 |
| 4NIC—DC198 | 12V24V | 5V30A 12V4A | 200X140X50 |
| 4NIC DC250 | 12V24V | 5V50A | 240x140x50 |
| 4NIC—DC300 | 12V24V | 5V60A | 260x160x60 |
| 4NIC DC400 | 12V24V | 5V80A | 260x180x80 |
| 4NIC- DC500 | 12V24V | 5V100A | 280x220x125 |
| 4NIC- DC50 | 12V24V | 12V4J7A | 150X120X50 |
| 4NIC-DC48 | 12V24V | ±12V±2A | 150x120x50 |
| 4NIC DC75 | 12V24V | 12V6- 25A | 160X120X50 |
| 4NIC DC72 | 12V24V | ±12V±3A | 160x120x50 |
| 4NIC DC100 | 12V24V | 12V8. 33A | 180x120x50 |
| 4NIC DC100 | 12V24V | ±12V±4.17A | 180X120X50 |
| 4NIC DC125 | 12V24V | 12V10. 4A | 190x120X50 |
| 4NIC DC124.8 | 12V24V | ±12V±5.21A | 190x120x50 |
| 4NIC—DC150 | 12V24V | 12V12. 5A | 180x120x50 |
| 4NIC DC150 | 12V24V | ±12V 上 6. 25A | 190X120X50 |
| 4NIC-DC192 | 12V24V | 12V16A | 220x120x50 |
| 4NIC DC200 | 12V24V | 土12V±8. 33A | 220X120X50 |
| 4NI0 DC240 | 12V24V | 12V20A | 220x160x60 |
| 4NIC DC360 | 12V24V | 12V30A | 220x180X80 |
| 4NIC-DC480 | 12V24V | 12V40A | 260X180X80 |
| 4NI0 DC600 | 24V | 12V50A | 280x180x80 |
| 4NIC DC720 | 24V | 12V60A | 280x220x125 |
| 4NIC DC840F | 24V | 12V70A | 300x220x125 |
| 4NIC DC960F | 24V | 12V80A | 340x240x155 |
| 4NIC—DC55.2 | 12V24V | 13. 8V4A | 160X120X50 |
| 4NIC DC69 | 12V24V | 13. 8V5A | 160X120X50 |
| 4NIC DC82. 8 | 12V24V | 13. 8V6A | 180x120x50 |
| 4NIC DC110.4 | 12V24V | 13. 8V8A | 190X120X50 |
| 4NIC- DC138 | 12V24V | 13. 8V10A | 200X120X50 |
| 4NIC-DC165.6 | 12V24V | 13. 8V12A | 220X120X50 |
| 4NIC-,DC207 | 12V24V | 13- 8V15A | 240X140X50 |
| 4NIC- DC276 | 12V24V | 13. 8V20A | 240X160X60 |
| 4NIC-DC414 | 24V | 13. 8V30A | 240X180X80 |
| 4NIC-DC552 | 24V | 13. 8V40A | 260X180X80 |
| 4NIC -DC690 | 24V | 13. 8V50A | 260X220X125 |
| 4NIC – DC828F | 24V | 13. 8V60A | 300X240X155 |
| 4NIC-DC966F | 24V | 13. 8V70A | 320x240x155 |
| 4NIC – DC1104F | 24V | 13. 8V80A | 340X240X155 |
| 4NIC -DC50 | 12V24V | 15V3. 3A | 150X120X50 |
| 4NIC – DC50 | 12V24V | 士 15V±1.67A | 150X120X50 |
| 4NIC -DC75 | 12V24V | 15V 5 a | 160X120x50 |
| 4NIC DC75 | 12V24V | ±15V 各 2. 5A | 160x120x50 |
| 4NIC -DC100 | 12V24V | 15V6. 67A | 180x120x50 |
| 4NIC -DC100 | 12V24V | 士 15V 士 3. 33A | 180X120X50 |
| 4NIC -DC125 | 12V24V | 15V8. 33A | 190X120X50 |
| 4NIC- -DC125 | 12V24V | 士 15V 士 4.17A | 190X120X50 |
| 4NIC- DC150 | 12V24V | 15V10A | 180X120X50 |
| 4NIC- DC150 | 12V24V | ±15V 各 5A | 180X120X50 |
| 4NIC- DC200 | 12V24V | 15Vl3. 3A | 200X120X50 |
| 4NIC- DC200 | 12V24V | 士 15V 土&67A | 200X120X50 |
| 4NIC DC225 | 12V24V | 15V15A | 240X140X50 |
| 4NIC DC300 | 12V24V | 15V20A | 240X160X50 |
| 4NIC DC375 | 12V24V | 15V25A | 240x180x80 |
| 4NIC- -DC450 | 24V | 15V30A | 260X180X80 |
| 4NIC DC600 | 24V | 15V40A | 260X220X125 |
| 4NIC – DC750 | 24V | 15V50A | 280X240X125 |
| 4NIC DC900F | 24V | 15V60A | 320X240X155 |
| 4NIC- -DC1050F | 24V | 15V70A | 360X240X155 |
| 4NIC—DC1200F | 24V | 15V80A | 360x240x155 |
| 4NIC—DC50 | 12V24V | 24V2. 08A | 150X120X50 |
| 4NIC—DC75 | 12V24V | 24V3.13A | 160X120X50 |
| 4NIC—DC100 | 12V24V | 24V4.17A | 180x120x50 |
| 4NIC—DC125 | 12V24V | 24 V5. 21A | 180X120X50 |
| 4NIC—DC150 | 12V24V | 24V6. 25A | 180X120x50 |
| 4NIC—DC200 | 12V24V | 24V8. 33A | 200x120x50 |
| 4NIC—DC240 | 12V24V | 24V10A | 220X140X50 |
| 4NIC DC288 | 24V | 24V12A | 220X140X50 |
| 4NIC—DC360 | 24V | 24V15A | 220X180X80 |
| 4NIC DC480 | 24V | 24V20A | 220X180X80 |
| 4NIC—DC600 | 24V | 24V25A | 240X180X80 |
| 4NIC DC720 | 24V | 24V30A | 300x180x80 |
| 4NIC -DC960F | 24V | 24V40A | 320X240X155 |
| 4NIC DC1200F | 24V | 24V50A | 360X240X155 |
| 4NIC DC1440F | 24V | 24V60A | 380X240X155 |
| 4NIC DC1680F | 24V | 24V70A | 380X240X155 |
| 4NIC DC1920F | 24V | 24V80A | 400X270X230 |
| 4NIC- DC2160F | 24V | 24V90A | 400X270X230 |
| 4NIC DC2400F | 24V | 24V100A | 400X270X230 |
| 4NIC–DC56 | 12V24V | 28V2A | 150X120X50 |
| 4NIC DC84 | 12V24V | 28V3A | 160X120X50 |
| 4NIC-DC112 | 12V24V | 28V4A | 180X120X50 |
| 4NIC—DC140 | 24V | 28V5A | 200X120X50 |
| 4NIC DC168 | 24V | 28V6A | 210X120X50 |
| 4NIC DC224 | 24V | 28V8A | 220X120X50 |
| 4NIC DC280 | 24V | 28V10A | 220X140X50 |
| 4NIC—DC420 | 24V | 28V15A | 220x180x80 |
| 4NIC—DC560 | 24V | 28V20A | 240X180X80 |
| 4NIC- DC840 | 24V | 28V30A | 280x220x125 |
| 4NIC- DC1120F | 24V | 28V40A | 340X240X155 |
| 4NIC- DC1400F | 24V | 28 V 50A | 360X240X155 |
| 4NIC—DC1600F | 24V | 28V60A | 380x240X155 |
| 4NIC—DC1960F | 24V | 28V70A | 400x270x230 |
| 4NIC-DC2240F | 24V | 28V80A | 400x270x230 |
| 4NIC DC2800F | 24V | 28V100A | 420X300X260 |
| 4NIC—DC96 | 12V24V | 48V2A | 160X120X50 |
| 4NIC—DC144 | 12V24V | 48V3A | 180X120X50 |
| 4NIC—DC192 | 12V24V | 48V4A | 190x120x50 |
| 4NIC—DC240 | 24V | 48V5A | 220X120X50 |
| 4NIC—DC288 | 24V | 48V6A | 240X140X50 |
| 4NIC DC384 | 24V | 48V8A | 220x180x80 |
| 4NIC—DC480 | 24V | 48V10A | 240X180X80 |
| 4NIC -DC576 | 24V | 48V12A | 260X180X80 |
| 4NIC—DC720 | 24V | 48V15A | 280X220X125 |
| 4NIC -DC960F | 24V | 48V20A | 300X240X155 |
| 4NIC—DC1200F | 24V | 48V25A | 360X240X155 |
| 4NIC—DC1440F | 24V | 48V30A | 380X240X155 |
| 4NIC—DC1920F | 24V | 48V40A | 400X270X230 |
| 4NIC—DC2400F | 24V | 48V50A | 400X270X230 |
| 4NIC- DC2880F | 24V | 48V60A | 420x300X260 |
| 4NIC -DC3360F | 24V | 48V70A | 450X300X260 |
| 4NIC—DC3840F | 24V | 48V80A | 500x410X290 |
| 4NIC—DC4320F | 24V | 48V90A | 500X410X290 |
| 4NIC—DC4800F | 24V | 48V100A | 500X410X290 |
6. On-Site Fault Repair Cases
Case 1: No Output Voltage (4NIC DC100 Model)
Symptom: The power supply is turned on, the power indicator is on, but there is no output voltage. The connected electronic testing equipment cannot be powered on.
Inspection and Repair: Professional maintenance personnel checked the power supply and found that the output fuse (5A/250V) was blown. The cause was a short circuit in the connected testing equipment, which triggered the overcurrent protection and blew the fuse. After replacing the fuse and repairing the short circuit in the testing equipment, the power supply resumed normal output. Precaution: Always check the connected equipment for short circuits before powering on the power supply.
Case 2: Unstable Output Voltage (4NIC DC150 Model)
Symptom: The output voltage of the 4NIC DC150 (15V 10A) fluctuates between 14.5V and 15.5V, causing the connected industrial sensor to work abnormally.
Inspection and Repair: The maintenance team found that the voltage adjustment potentiometer was worn out due to long-term use, leading to unstable contact. After replacing the potentiometer (model: 10kΩ precision potentiometer) and calibrating the output voltage, the voltage stability was restored to ±0.1V. Precaution: Regularly check and calibrate the adjustment knobs to ensure precision.
Case 3: Over-Temperature Shutdown (4NIC DC200 Model)
Symptom: The 4NIC DC200 (5V 40A) shuts down automatically after 30 minutes of operation, and the over-temperature indicator lights up.
Inspection and Repair: Inspection revealed that the cooling fan was blocked by dust, resulting in poor heat dissipation. The fan was cleaned with compressed air, and the heat sink was wiped with a dry cloth. After testing, the power supply operated continuously for 4 hours without over-temperature shutdown. Precaution: Regularly clean the fan and heat sink to ensure effective heat dissipation, especially in dusty environments.
7. Frequently Asked Questions (FAQ)
| Question | Answer |
| Which model of the COSIC 4NIC series is suitable for high-power industrial equipment (requiring 5V 50A output)? | The 4NIC DC250 model is specifically designed for high-power applications, with an output of 5V 50A and a size of 240×140×50mm. It features a forced air cooling system and multiple protection mechanisms, making it ideal for powering high-power industrial equipment such as frequency converters and large-scale sensors. For higher power demands (e.g., 5V 100A), the 4NIC DC500 model is recommended. |
| Can the COSIC 4NIC DC Power Supply be used in outdoor environments? | The standard models (IP30 protection) are designed for indoor use. However, if outdoor use is required, we recommend choosing the enhanced waterproof and dustproof version (IP54 protection) to adapt to harsh outdoor conditions. The enhanced version is equipped with a sealed case and corrosion-resistant components, suitable for outdoor telecommunications base stations and renewable energy systems. Please confirm the environmental requirements when placing an order. |
| How to calibrate the output voltage and current of the 4NIC series power supply? | To calibrate the output, you will need a precision multimeter (accuracy ≥ 0.1%). First, turn on the power supply and let it warm up for 30 minutes. Then, adjust the voltage adjustment knob to the desired value and use the multimeter to measure the actual output voltage. If there is a deviation, use a screwdriver to adjust the internal calibration potentiometer (located on the circuit board) until the measured value matches the set value. Repeat the same steps for current calibration. It is recommended to calibrate the power supply every 6 months to ensure accuracy. For non-professionals, please contact our technical support team for assistance. |
8. Procurement Guide and Call to Action
The COSIC 4NIC DC Power Supply series offers a comprehensive range of models to meet the diverse needs of different industries and applications. Whether you need a small-scale power supply for laboratory testing (e.g., 4NIC DC50, 4NIC DC75) or a high-power solution for industrial production (e.g., 4NIC DC250, 4NIC DC500), we have the right product for you. Our power supplies comply with international standards (IEC, CE, RoHS) and undergo strict quality control (100% full-load testing before delivery), ensuring reliable performance and long service life.
