Description
The Mornsun LM35-20B12 36W AC/DC Enclosed Switching Power Supply is a reliable, high-efficiency power conversion unit engineered to deliver a stable 12V DC output at 3A (36W total power). Part of Mornsun’s popular LM35 enclosed SMPS series, this unit features a universal wide input voltage range of 85-264VAC or 120-373VDC, seamlessly accepting both AC and DC inputs from the same terminal block. Optimized for industrial applications, it offers low standby power consumption and high conversion efficiency across continuous operational cycles.
Designed for demanding environments, the LM35-20B12 operates reliably across an ambient thermal range of -30°C to +70°C. It incorporates comprehensive output protections and provides excellent electromagnetic compatibility, meeting stringent international standards including IEC/EN61000-4, CISPR32/EN55032, IEC/UL/EN62368, IEC/EN60335, GB4943, and IEC/EN61558. Housed in a compact metallic chassis, it is an ideal power solution for industrial automation control panels, LED lighting arrays, street light controllers, security systems, and telecommunications infrastructure.
Note: Product images are for reference only; actual appearance or packaging may vary slightly based on manufacturing batches.
Key Features
- Universal Input Voltage Range: Accepts wide 85–264VAC or 120–373VDC power sources to accommodate diverse electrical grids.
- Dual AC/DC Input Compatibility: Seamlessly works with either AC or DC input sources connected to the exact same terminal blocks.
- Reliable Industrial Thermal Range: Engineered to function consistently and reliably in harsh ambient environments spanning from -30°C to +70°C.
- Low Standby Consumption & High Efficiency: Optimized circuitry minimizes idle power loss while maintaining peak conversion efficiency under load.
- Compact Enclosed Chassis: Space-saving metallic housing designed for secure mechanical integration inside tight control cabinets and automation enclosures.
- Superior EMC Performance: Complies with advanced electromagnetic compatibility standards to prevent electrical interference with surrounding sensitive electronics.
- Broad International Compliance: Adheres to strict global safety standards including IEC/EN61000-4, CISPR32/EN55032, UL/EN62368, and GB4943.
- Cost-Effective Reliability: Economical design built for long-term operational uptime in continuous industrial applications.
Benefits
- Unmatched Operational Stability: Wide temperature tolerance and robust circuit design ensure continuous power delivery in unconditioned factory floors or outdoor cabinets.
- Energy Optimization: Low standby power consumption reduces idle energy waste across distributed industrial control layouts.
- Flexible Grid Integration: Dual AC/DC input capability simplifies power architecture planning for backup battery systems and diverse industrial mains.
- Regulatory Confidence: Extensive international safety and EMC certifications simplify export approvals and machine commissioning.
Applications
- Industrial Automation Control Panels: Perfect for powering PLCs, relay modules, sensors, and factory automation machinery.
- LED Lighting & Street Light Control: Reliable compact power source for outdoor lighting control hubs, automated timers, and display panels.
- Security & Surveillance Systems: Ideal for security monitoring arrays, access control units, and automated infrastructure distribution boxes.
- Telecommunications & Networking: Clean, regulated power conversion for remote communication nodes, routers, and switching infrastructure.
Package Includes
- 1 x LM35-20B12 Mornsun SMPS – 12V 3A – 36W AC/DC Enclosed Switching Single Output Power Supply
Specifications
| Parameter | Specification |
|---|---|
| Item Type | Enclosed Switching Power Supply (SMPS) |
| Brand Name | Mornsun |
| Model Number / Type | LM35-20B12 (Listed as LM35 23B12) |
| Output Voltage | 12 V DC |
| Output Current | 3.0 A |
| Output Power | 36 W |
| Input Voltage Range | 85 – 264 VAC / 120 – 373 VDC |
| Operating Temperature | -30°C to +70°C |
| Dimensions (L × W × H) | 99 mm × 82 mm × 30 mm |
| Product Weight | 180 g |
| Safety & Compliance | IEC/EN61000-4, CISPR32/EN55032, IEC/UL/EN62368, IEC/EN60335, GB4943, IEC/EN61558 |
| Shipping Weight | 0.2 kg |
| Shipping Dimensions | 10 × 9 × 4 cm |




















