RS 428-445 Mean Well MDR-100-24 DIN Rail Power Supply 24VDC 4A Used Spare

Overview
RS-branded Mean Well MDR-100-24 DIN-rail switch mode power supply, RS part 428-445, providing a regulated 24 V DC output at up to 4 A (100 W). This unit is in good working used condition with normal cosmetic wear on the case and latch.

Item details

• Brand: RS / Mean Well (OEM)

• RS stock number: 428-445

• Model: MDR-100-24

• Type: Single-output switched mode DIN-rail power supply

• Input voltage: 85–264 V AC (universal), 120–373 V DC

• Input frequency: 47–63 Hz

• Output voltage: 24 V DC, adjustable approx. 24–30 V via front “+V ADJ” trim

• Output current: 4 A rated (96–100 W output power)

• Terminals (front):

  • AC input: L, N screw terminals

  • DC output: +V, +V, –V, –V terminals (24 V / 4 A)

  • DC OK relay contact: max. 30 V DC / 1 A

• Indicators: DC OK LED on front panel

• Protections: Short circuit, overload, overvoltage; convection cooled

• Mounting: DIN rail TS35 via integrated blue housing and rear latch

• Country of manufacture: Taiwan (per label)

Condition

• Good working used condition, removed from an operating panel

• Typical cosmetic marks and light dust on housing and front label

• DIN-rail latch and all terminal screws present and functional

• No original box, manual, or additional accessories included

Notes

• Commonly used to power PLCs, sensors, and machine control systems requiring 24 V DC up to 4 A.

• RS-branded but electrically equivalent to standard Mean Well MDR-100-24, simplifying replacements.

• Buyer should verify input voltage and load requirements before installation.

• See photos for full label details, terminal layout, and cosmetic condition.