Samlex America PST-30S-24A – 300W Pure Sine Wave Inverter

The PST-30S-24A converts 24V DC battery power into 300 watts of true pure sine wave 120V AC, the same clean waveform as utility power. Unlike cheaper modified- or quasi-sine inverters, its low total harmonic distortion (<3%) makes it safe for sensitive electronics — medical and precision equipment, audio gear, laser printers and variable-speed tools that misbehave on a stepped waveform. A temperature-controlled fan and a full protection suite (low/high voltage, overload, over-temperature, short-circuit) keep it running reliably in mobile and off-grid installations.

Confirmed Specifications

• Manufacturer: Samlex America
• Model: PST-30S-24A
• Product Type: Pure sine wave DC-AC inverter
• Input Voltage: 21 to 33 VDC (24V nominal)
• Input Current at No Load: <400 mA
• Output Voltage: 120 VAC +/- 3%
• Output Frequency: 60 Hz +/- 1%
• Output Waveform: Pure sine wave
• Total Harmonic Distortion: <3%
• Output Power:
  • Continuous: 300 Watts
  • Surge (<1 second): 500 Watts
• Protection thresholds:
  • Low input voltage alarm: 21 V
  • Low input voltage shutdown: 20 V
  • High input voltage shutdown: 33 V
• Peak Efficiency: 88%
• Cooling: Temperature-controlled fan
• Output Connection: Standard North American outlet (NEMA 5-15R)
• Input Connection: Tubular screw-down terminals
• DC Input Fuse: 20 A (automotive ATC, 32V)
• Operating Ambient Temp: 0 to 40°C +/- 5°C
• Dimensions (L x W x H): 214 x 146 x 65 mm
• Weight: 1.5 kg (3.3 lbs)

Typical Applications

• Powering sensitive electronics and precision equipment from a 24V battery bank
• RV, marine, fleet and off-grid solar systems
• Running laser printers, medical devices, audio and test gear on the road