Mean Well MDR-40-12 DIN rail switching power supply providing 40 W output with 12 V DC and 3.3 A for industrial control applications.
£24.40
The Mean Well MDR-40-12 is a compact and reliable 40 W DIN rail mounted switching power supply designed to provide stable DC power for industrial automation, control systems and electrical equipment. As part of the trusted Mean Well MDR series, it combines efficient power conversion with a slim enclosure suitable for installation inside electrical cabinets and control panels.
This power supply delivers a regulated 12 V DC output with a rated output current of 3.3 A, providing dependable power for PLCs, sensors, controllers, relays and other low-power industrial devices. Its DIN rail mounting format allows quick installation and easy integration into automation systems.
With a 40 W rated output power, 12 V DC output voltage and compact modular design, the MDR-40-12 is ideal for applications requiring efficient, space-saving and dependable DC power conversion in industrial environments.
DIN rail power supplies such as the Mean Well MDR-40-12 provide stable and efficient DC power conversion for industrial electronics. By delivering a regulated 12 V DC output, they help ensure reliable operation of automation components, monitoring devices and control systems.
The MDR series is designed for professional electrical installations where compact dimensions, dependable performance and simple DIN rail mounting are essential. Its robust design makes it suitable for a wide range of industrial and commercial control applications.
| Manufacturer | Mean Well |
|---|---|
| Series | MDR |
| Model | MDR-40-12 |
| Product type | DIN rail switching power supply |
| Rated power | 40 W |
| Output voltage | 12 V DC |
| Output current | 3.3 A |
| Input voltage | 85–264 V AC / 120–370 V DC |
| Input frequency | 47–63 Hz |
| Mounting type | DIN rail mounting |
| Output type | Regulated DC |
| Protection functions | Short circuit, overload and over voltage protection |
| Application type | Industrial automation and control systems |
The MDR-40-12 is a DIN rail mounted switching power supply designed to provide regulated 12 V DC power for industrial automation and control equipment.
The Mean Well MDR-40-12 provides a regulated 12 V DC output.
The MDR-40-12 provides a rated output current of 3.3 A.
The power supply is designed for DIN rail mounting inside electrical cabinets and control panels.
The MDR-40-12 is commonly used in industrial automation, PLC systems, sensors, instrumentation and control applications.
Mean Well MDR series power supplies are widely used by engineers and system integrators to deliver reliable DC power conversion for industrial automation, control systems and electrical installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...