Product Overview
The SDR Series Industrial DIN Rail Power Supply is an ultra-slim, high-efficiency AC/DC power solution designed and manufactured by SMUN, specifically optimized for industrial automation and rail-mounted system integration. Covering a wide power range from 75W to 480W, this series supports standard TS-35 DIN rail mounting, with a compact plastic casing that fits seamlessly into narrow electrical cabinets and control panels. It features a wide input voltage range of 88–264VAC / 124–370VDC, built-in active PFC function, and stable 12V, 24V, 48V DC output options, delivering conversion efficiency up to 90% and ultra-low no-load power consumption compliant with ErP Lot 6 standards. This slim DIN rail switching power supply is engineered to provide uninterrupted, reliable power for continuous industrial operation.
Technical Parameters
Category | Core Specifications |
Series Models | SDR-75, SDR-120, SDR-240, SDR-480 |
Rated Power Range | 75W to 480W |
Standard Output Voltage | 12V, 24V, 48V DC |
Rated Current Range | 0–1.6A (48V/75W) to 0–20A (12V/240W) |
Input Voltage Range | 88–264VAC / 124–370VDC |
Conversion Efficiency | Up to 90% (model-dependent) |
Ripple & Noise | 100–150mVp-p max (model-dependent) |
Operating Temperature | -30°C to +70°C (with derating curve) |
MTBF (25°C) | Up to 479.8K hours (MIL-HDBK-217F standard) |
Dimensions | 32×125.2×102mm (75W) to 85.5×125.2×128.5mm (480W, L×W×H) |
Series | Wattage(W) | Input(VAC) | Output(VDC) | Size(mm) | Warranty(years) |
SDR-75 | 75 | 90-264 | 12,24,48 | 32X125.2X102 | 3 |
SDR-120 | 120 | 12,24,48 | 40X125.2X113.5 |
SDR-240 | 240 | 24,48 | 63X125.2X113.5 |
SDR-480 | 480 | 24,48 | 85.5X125.2X128.5 |
Model | SDR-75-12 | SDR-75-24 | SDR-75-48 |
Output | DC Voltage | 12V | 24V | 48V |
Current Range | 0-6.3A | 0-3.2A | 0-1.6A |
Rated Power | 75.6W | 76.8W | 76.8W |
Ripple Noise(Max) | 100mVp-p | 120mVp-p | 150mVp-p |
Voltage Adj.Range | 12-14V | 24-28V | 48-55V |
Voltage Tolerance | ±1.0% | ±1.0% | ±1.0% |
Line Regulation | ±0.5% | ±0.5% | ±0.5% |
Load Regulation | ±1.0% | ±1.0% | ±1.0% |
Set up,Rise time | 1500ms,60ms/230VAC 3000ms,60ms/115VAC(full load) |
Hold up Time | 80ms/230VAC 20ms/115VAC(full load) |
Input | Voltage Range | 88 ~264VAC 124~370VDC[DC input operation possible by connecting AC/L(+),AC/N(-)] |
Frequency | 47 ~ 63Hz |
Efficiency | 88.5% | 89% | 90% |
AC Current | 1.4A/115VAC 0.85A/230VAC |
Inrush Curent | 30A/115VAC 50A/230VAC |
Leakage Current | <1mA / 240VAC |
Protection | Overload | Normally works within 110~150% rated output power for more than 3 seconds and then shut down o/p voltage,re-power on to recover |
150~170%rated power,constant current limiting with auto-recovery within 3 seconds,and then shut down o/p voltage after 3 seconds,re-power on to recover |
Over Voltage | 14-17V | 29-33V | 56-65V |
Protection type : Shut down o/p voltahe, re-power on to recover |
Over Temperature | Shut down o/p voltage,re-power on to receover after temperature goes down |
Environment | Working Temperature | -30~ +70℃ (Refer to derating curve as datasheet from SMUN) |
Working Humidity | 20 ~ 95% RH non-condensing |
Storage Temp.Humidity | -40 ~ +85℃, 10 ~ 95% RH |
Temp.Coefficient | ±0.03%/℃ (0 ~ 50℃) |
Vibration | Component：10~500Hz,2G 10min./1 cycle，60min. each along X,Y,Z axes; Mounting: Compliance IEC60068-2-6 |
Safety
| Safety Standards | Ul508, TUV BS EN/EN62368-1, EAC TP TC 004, BSMI CNS14336-1 approved;（meet BS EN/EN60204-1) |
Withstand Voltage | I/P-O/P:2KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC |
Isolation Resistance | I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500VDC/25℃/70% RH |
EMC Emission | Compliance to BS EN/EN55032(CISPR32), BS EN/EN61000-3-2,EAC TP TC 020, CNS13438 Class A |
EMC Immunity | Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11,BS EN/EN55024, BS EN/EN61000-6-2(BS EN/EN50082-2), heavy industry level, criteria A，EAC TP TC 020 |
Others | MTBF | 479.8k hrs MIL-HDBK-217F(25℃) |
Dimension | 32*125.2*102mm (L*W*H) |
Packing | 0.51Kg; 28pcs/15.3Kg/1.22CUFT |
Note | 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance : includes set up tolerance, line ragulation and load regulation. 4. The power supply is considered a component which will be installed into final equipment. The final equipment must be re-confirmed that it still meets EMC directives. 5. Installation clearances : 40mm on top, 20mm on the bottom, 5mm on the left and right side are recommended when loaded permanently with full power.In case the adjacent device is a heat soure, 15mm clearance is recommended 6. Derating may be needed under low input voltage. Please check the derating curve for more details. 7.Please contact with SMUN customer service for more details. |
Model | SDR-120-12 | SDR-120-24 | SDR-120-48 |
Output | DC Voltage | 12V | 24V | 48V |
Current Range | 0-10A | 0-5A | 0-2.5A |
Rated Power | 120W | 120W | 120W |
Ripple Noise(Max) | 100mVp-p | 120mVp-p | 150mVp-p |
Voltage Adj.Range | 12-14V | 24-28V | 48-55V |
Voltage Tolerance | ±1.0% | ±1.0% | ±1.0% |
Line Regulation | ±0.5% | ±0.5% | ±0.5% |
Load Regulation | ±1.0% | ±1.0% | ±1.0% |
Set up,Rise time | 1500ms,60ms/230VAC 3000ms,60ms/115VAC(full load) |
Hold up Time | 20ms/230VAC 20ms/115VAC(full load) |
Input | Voltage Range | 88 ~264VAC 124~370VDC[DC input operation possible by connecting AC/L(+),AC/N(-)] |
Frequency | 47 ~ 63Hz |
Efficiency | 85% | 88% | 90% |
AC Current | 1.4A/115VAC 0.85A/230VAC |
Inrush Curent | 30A/115VAC 50A/230VAC |
Leakage Current | <1mA / 240VAC |
Protection | Overload | Normally works within 110~150% rated output power for more than 3 seconds and then shut down o/p voltage,re-power on to recover |
150~170%rated power,constant current limiting with auto-recovery within 3 seconds,and then shut down o/p voltage after 3 seconds,re-power on to recover |
Over Voltage | 14-17V | 29-33V | 56-65V |
Protection type : Shut down o/p voltahe, re-power on to recover |
Over Temperature | Shut down o/p voltage,re-power on to receover after temperature goes down |
Environment | Working Temperature | -30~ +70℃ (Refer to derating curve as datasheet from SMUN) |
Working Humidity | 20 ~ 95% RH non-condensing |
Storage Temp.Humidity | -40 ~ +85℃, 10 ~ 95% RH |
Temp.Coefficient | ±0.03%/℃ (0 ~ 50℃) |
Vibration | Component：10~500Hz,2G 10min./1 cycle，60min. each along X,Y,Z axes; Mounting: Compliance IEC60068-2-6 |
Safety
| Safety Standards | Ul508, TUV BS EN/EN62368-1, EAC TP TC 004, BSMI CNS14336-1 approved;（meet BS EN/EN60204-1) |
Withstand Voltage | I/P-O/P:2KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC |
Isolation Resistance | I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500VDC/25℃/70% RH |
EMC Emission | Compliance to BS EN/EN55032(CISPR32), BS EN/EN61000-3-2,EAC TP TC 020, CNS13438 Class A |
EMC Immunity | Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11,BS EN/EN55024, BS EN/EN61000-6-2(BS EN/EN50082-2), heavy industry level, criteria A，EAC TP TC 020 |
Others | MTBF | 292.1k hrs MIL-HDBK-217F(25℃) |
Dimension | 40*125.2*113.5mm (L*W*H) |
Packing | 0.67Kg; 28pcs/15.3Kg/1.22CUFT |
Note | 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance : includes set up tolerance, line ragulation and load regulation. 4. The power supply is considered a component which will be installed into final equipment. The final equipment must be re-confirmed that it still meets EMC directives. 5. Installation clearances : 40mm on top, 20mm on the bottom, 5mm on the left and right side are recommended when loaded permanently with full power.In case the adjacent device is a heat soure, 15mm clearance is recommended 6. Derating may be needed under low input voltage. Please check the derating curve for more details. 7.Please contact with SMUN customer service for more details. |
Model | SDR-240-12 | SDR-240-24 | SDR-240-48 |
Output | DC Voltage | 12V | 24V | 48V |
Current Range | 0-20A | 0-10A | 0-5A |
Rated Power | 240W | 240W | 240W |
Ripple Noise(Max) | 100mVp-p | 120mVp-p | 150mVp-p |
Voltage Adj.Range | 12-14V | 24-28V | 48-55V |
Voltage Tolerance | ±1.0% | ±1.0% | ±1.0% |
Line Regulation | ±0.5% | ±0.5% | ±0.5% |
Load Regulation | ±1.0% | ±1.0% | ±1.0% |
Set up,Rise time | 1500ms,60ms/230VAC 3000ms,60ms/115VAC(full load) |
Hold up Time | 20ms/230VAC 20ms/115VAC(full load) |
Input | Voltage Range | 88 ~264VAC 124~370VDC[DC input operation possible by connecting AC/L(+),AC/N(-)] |
Frequency | 47 ~ 63Hz |
Efficiency | 85% | 88% | 90% |
AC Current | 1.4A/115VAC 0.85A/230VAC |
Inrush Curent | 30A/115VAC 50A/230VAC |
Leakage Current | <1mA / 240VAC |
Protection | Overload | Normally works within 110~150% rated output power for more than 3 seconds and then shut down o/p voltage,re-power on to recover |
150~170%rated power,constant current limiting with auto-recovery within 3 seconds,and then shut down o/p voltage after 3 seconds,re-power on to recover |
Over Voltage | 14-17V | 29-33V | 56-65V |
Protection type : Shut down o/p voltahe, re-power on to recover |
Over Temperature | Shut down o/p voltage,re-power on to receover after temperature goes down |
Environment | Working Temperature | -30~ +70℃ (Refer to derating curve as datasheet from SMUN) |
Working Humidity | 20 ~ 95% RH non-condensing |
Storage Temp.Humidity | -40 ~ +85℃, 10 ~ 95% RH |
Temp.Coefficient | ±0.03%/℃ (0 ~ 50℃) |
Vibration | Component：10~500Hz,2G 10min./1 cycle，60min. each along X,Y,Z axes; Mounting: Compliance IEC60068-2-6 |
Safety
| Safety Standards | Ul508, TUV BS EN/EN62368-1, EAC TP TC 004, BSMI CNS14336-1 approved;（meet BS EN/EN60204-1) |
Withstand Voltage | I/P-O/P:2KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC |
Isolation Resistance | I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500VDC/25℃/70% RH |
EMC Emission | Compliance to BS EN/EN55032(CISPR32), BS EN/EN61000-3-2,EAC TP TC 020, CNS13438 Class A |
EMC Immunity | Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11,BS EN/EN55024, BS EN/EN61000-6-2(BS EN/EN50082-2), heavy industry level, criteria A，EAC TP TC 020 |
Others | MTBF | 292.1k hrs MIL-HDBK-217F(25℃) |
Dimension | 63*125.2*113.5mm (L*W*H) |
Packing | 1.03Kg; 12pcs/13.4Kg/1.22CUFT |
Note | 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance : includes set up tolerance, line ragulation and load regulation. 4. The power supply is considered a component which will be installed into final equipment. The final equipment must be re-confirmed that it still meets EMC directives. 5. Installation clearances : 40mm on top, 20mm on the bottom, 5mm on the left and right side are recommended when loaded permanently with full power.In case the adjacent device is a heat soure, 15mm clearance is recommended 6. Derating may be needed under low input voltage. Please check the derating curve for more details. 7.Please contact with SMUN customer service for more details. |
Core Advantages for Our Business Partners
For our business partners, system integrators, and automation equipment manufacturers, the SDR Series DIN Rail Power Supply delivers unmatched operational and commercial value for your projects. First, the tool-free TS-35 DIN rail snap-on mounting design drastically reduces installation time and labor costs in mass equipment assembly, improving your production efficiency. Second, the ultra-slim form factor maximizes the utilization of limited cabinet space, enabling more compact control system designs for your end products. Third, its heavy-industry grade EMC immunity ensures stable operation in electrically noisy industrial environments, reducing equipment failure rates and after-sales support costs for your business. Additionally, the ultra-low no-load power consumption helps your products meet global green energy standards, enhancing your product competitiveness in international markets, backed by our 3-year manufacturer warranty for full supply chain reliability.
Target Industries & Applications
This robust DIN rail automation power supply is the preferred choice for a wide range of industrial and commercial sectors, including:
Industrial automation PLC, sensor, and actuator systems
Building automation and intelligent control systems
Security and video surveillance infrastructure
Telecommunication and network edge devices
Indoor and outdoor LED lighting systems
Precision instrumentation and test equipment
Quality Assurance & Compliance
Every unit in the SDR Series DIN rail power supply line undergoes strict full-load aging testing and quality inspection before leaving the factory. Our products are certified to international safety standards including UL508, TUV BS EN/EN62368-1, EAC TP TC 004, and BSMI CNS14336-1, with full CE marking. We perform rigorous withstand voltage tests (I/P-O/P: 2kVAC, I/P-FG: 2kVAC, O/P-FG: 0.5kVAC), isolation resistance verification, and full EMC compliance with heavy-industry level immunity standards EN61000 series and EN55032 Class A for emissions.
Packaging, Shipping & Order Terms
Each unit is packaged with anti-static, shock-absorbent materials to ensure safe transit. For example, the SDR-75 model has a single unit weight of 0.51kg, with bulk packaging of 28 units per carton (15.3kg total, 1.22CUFT volume). We offer flexible global shipping options via sea freight, air cargo, and international express, with low MOQ for prototype samples and bulk order discounts for volume purchases. Customized output voltage, functional modifications, and branding services are available upon request, with standard lead times of 2-12 working days based on order specifications.
FAQ
What DIN rail standard does this series support?
The SDR series is compatible with standard TS-35 / 7.5 or 15 industrial DIN rails for snap-on mounting.
What is the recommended installation clearance for full-load operation?
We recommend 40mm clearance on the top, 20mm on the bottom, and 5mm on left/right sides for permanent full-load use.
What is the overload protection mechanism?
The power supply features constant current limiting for mild overload, with output shutdown and re-power on recovery for severe overload faults.
Get Your Custom Quotation
Looking for a reliable industrial DIN rail power supply for your automation project? Reach out to our professional team today to receive a custom quotation tailored to your power requirements, order volume, and customization needs. We are committed to providing our business partners with high-quality power solutions and comprehensive technical support to drive your project success.
