Difference Between LRS, RSP, and SE Series in Mean Well Power Supplies

Introduction

Mean Well’s LRS, RSP, and SE series are among the most widely used enclosed type SMPS in the automation and electronics industry. Each series serves a different purpose, with varying features, efficiencies, and costs. This blog explains the differences so you can select the right model for your application.

1. LRS Series – The Budget-Friendly Workhorse

– Power Ratings: 35W to 350W
– Cooling: Convection-cooled (no fan)
– Features: Lightweight, compact, high price-to-performance ratio
– Use Cases: LED strips, basic control panels, consumer-grade devices

2. SE Series – Standard Performance at Low Cost

– Power Ratings: 100W to 1000W
– Cooling: Fan-cooled (internal fan)
– Features: Lower efficiency (76–85%), older generation, bulkier
– Use Cases: Budget industrial equipment, resistive loads

3. RSP Series – High-Performance Industrial Grade

– Power Ratings: 75W to 3000W
– Cooling: Fan or forced air (depending on wattage)
– Features: High efficiency (up to 90%), remote ON/OFF, DC OK signal
– Use Cases: Factory automation, robotics, CNC machines, PLC-based panels

Key Differences at a Glance

– Efficiency: RSP > LRS > SE
– Size: LRS is most compact; RSP is dense; SE is larger
– Noise: LRS = silent (no fan); SE & RSP = active cooling
– Protections: All three include OVP, OLP, SCP (over-voltage, overload, short-circuit)

Conclusion

Choose LRS for low-cost compact needs, SE for medium performance in non-critical environments, and RSP for high-end industrial-grade applications.

Need Help Choosing the Right Series?

Our team can help you choose based on wattage, space, efficiency, and budget. Contact us today or browse our range on MWPower.in.