Shourt Line by Soft Works Ltd.
Model Railroad Products



About Us



Power Supplies






Contact Us and How to Order

SL-PS500-1-24-20AF New 24 Volt DC, 20 Amp, 500 VA (Watt) - Pure DC

DC Regulated Switching Power Supply for Analog DC or MTS DCC use.

PFC enabled efficiency: Click here to learn why PFC saves you $$$

24 Volt 20 Amp Train power supply

Price: $189.95 New MSRP: $269.95 (like new condition)

Perfect for powering a Massoth 12 Amp Central Station and 12 Amp Booster for 20 amps of continuous DCC power to run your trains. Protect your train investment with a this fully protected PURE DC power supply and save on our electric bill.

Click here for data sheet

Features: The SL-PS500-1-24 regulated switching power supply outputs 24 volts at 20 amps.

  • Universal AC input / full range with PFC (Power Factor Correction)
  • Forced air cooling by built-in DC fan
  • Cooling fan ON/OFF auto control
  • Over load, over voltage, over temperature & short circuit protection
  • 100% full load burn-in test
  • 1 year warranty

PFC enabled efficiency: Click here to learn why PFC saves you $$$

Input Voltage: 90-264 VAC Input 47-63Hz

Input Current: 7 Amps @ 120VAC, 3 Amps @ 230VAC

Output Voltage: 24Volts 500Watts adjustable (20 to 26.5volts)

Output Current: 20 ADC (DC Amps) at 230VAC

Output Current: 500VA (500 watts) at 230VAC

Output Ripple: 250 mv (millivolt) Max. / 25 mv Typical

Dimensions: 7.25" x 4.75" x 3.75"

Weight: 4.1 pounds


  • Universal AC input / Full range
  • Built-in active PFC function, PF>0.95
  • Protections: Short circuit / Overload/ Over voltage / Over temperature
    • Over Load Protection and Short Circuit Protection: Constant current limiting, recovers automatically after fault condition is removed
    • Over Voltage protected: Hiccup mode, recovers automatically after fault condition is removed
    • Over Temperature Protection: Auto Shutdown and auto restart
  • Forced air cooling by built-in DC fanBuilt-in cooling
  • Automatic Fan control
  • Built-in remote ON-OFF control for remotly turning ON and OFF the Power Supply.
  • Built-in remote sense function: Provides constant voltage at load regardless of wire voltage drop up to 1000 feet.
  • Fixed switching frequency at 110KHz
  • Enclosed regulated switching supply.
  • Terminal strip In/Out
  • PFC - Energy Efficient Switching Supply

Safety approvals: UL, TVL

Cables: not included..

Optional AC Cable with power switch: $2.95 New
  • UL listed
  • 6 foot long
  • 3 wire cable
  • Molded three prong AC plug
  • Rated 300 Volts,
  • 105 deg. C,
  • 18 AWG with a center green ground wire.

The cable is easily attached to the power supply using only a screw driver.

Optional power 6' power cord