Functional Devices PSMN24DAS Power Supply

The Functional Devices PSMN24DAS is a robust 24 VDC power supply engineered for demanding BAS and HVACR control applications. This Class 2 power supply provides a regulated 300 mA output, making it an ideal choice for powering sensitive sensors, transducers, and multi-stage controllers. Housed in a durable NEMA 1 enclosure, the unit features a pre-packaged power supply design that simplifies field installation. A critical internal feature is the integrated on-off switch, which allows technicians to safely isolate downstream circuits during maintenance without disrupting the primary line voltage. This model is designed for a 120 VAC input and utilizes a reliable linear transformer design to ensure low-noise DC output, preventing signal interference in low-voltage communication loops and analog 0-10V or 4-20mA monitoring systems. Its compact footprint ensures compatibility with standard electrical junction boxes often found in commercial mechanical rooms.

• Integrated Toggle Switch: Allows for rapid circuit isolation for troubleshooting or service without tripping main breakers.
• Regulated 24 VDC Output: Provides stable 300 mA current to prevent erratic sensor readings or control logic failures.
• Class 2 Rated: Simplifies wiring requirements by meeting NEC standards for low-voltage power distribution.
• NEMA 1 Enclosure: Protects internal components from dust and debris while providing standard knockout access for 1/2-inch conduit.
• LED Status Indicator: Offers immediate visual confirmation of power output for faster diagnostic cycles.

Can the PSMN24DAS be used to power multiple field devices?
Yes, provided the total continuous current draw does not exceed the 300 mA output rating. It is commonly used for small banks of 24V sensors or as a local power source for building automation controllers.

What are the input voltage requirements for this unit?
This specific model is engineered for 120 VAC input. For 277 VAC or multi-tap applications, verify the specific wiring schematic or model suffix before installation.

Does the unit include overcurrent protection?
The PSMN24DAS features internal current limiting and thermal shutdown capabilities, protecting the DC load and the transformer from short-circuit conditions or excessive draw.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.