Mornsun
Mornsun LM75-23B55 75W Enclosed AC-DC Switching Power Supply - 55V 1.36A
Mornsun LM75-23B55 75W Enclosed AC-DC Switching Power Supply - 55V 1.36A
SKU:IN000141
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Delivery Time
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Mornsun LM75-23B55 Power Supply
The Mornsun LM75-23B55 is an enclosed AC-DC switching power supply providing a regulated 55V DC output at up to 1.36A, with a rated output power of 75W. It accepts the AC or DC input ranges listed below and is designed for integration into finished equipment.
An unusual 55V rail model, suited to telecom, PoE and audio equipment that needs a higher DC bus. The wide 85-305VAC input range suits equipment fed from unstable mains.
Key Features
- Adjustable DC output (52-56V) for compatible equipment and control circuits.
- 90.5% typical efficiency at 230VAC.
- 4000VAC input-to-output isolation test rating.
- Protection against short-circuit, over-current and over-voltage faults.
- Enclosed metal chassis with screw-terminal connections.
- Free air convection. Allow suitable airflow and installation clearance.
Technical Specifications
| Model | LM75-23B55 |
|---|---|
| Nominal output | 55V DC / 1.36A |
| Rated output power | 75W |
| Output adjustment | 52-56V DC |
| AC input | 85-305VAC |
| DC input | 120-430VDC |
| Typical efficiency at 230VAC | 90.5% |
| Maximum capacitive load | 680µF |
| Input-output isolation test | 4000VAC |
| Operating temperature | -30°C to +70°C, with derating above +50°C |
| Dimensions | 99 × 97 × 30mm |
| Cooling | Free air convection |
Selection and Installation
Match the output rails to your load, and allow for its continuous current and start-up demand. Follow the manufacturer's derating curves: the maximum output is not available at every input voltage or ambient temperature. Adjusting the output voltage does not increase the permitted output power or current.
This is a component power supply, not a consumer plug-in adapter. Mains wiring should be carried out by a qualified person in a suitable protective enclosure. Disconnect input power before connecting wires, follow the marked terminal assignments and protective-earth requirements, and keep ventilation paths clear. The isolation figure is a test rating, not a continuous operating voltage.
Package contents: 1 × Mornsun LM75-23B55 power supply.
Manufacturer datasheet: specifications, dimensions and derating curves. Product images are for reference; follow the supplied unit's markings and documentation.