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Rectangular silver inverter with front GFCI outlets and LED indicators

Samlex

Samlex PST-300-24 300 Watt Pure Sine Wave Power Inverter 24 VDC

SKU CH-FND2-SSDGA

Converts 24 VDC to 300 W pure sine-wave 120 VAC with 500 W surge, dual GFCI outlets, low idle draw and full protection circuits

  • Pure sine-wave output protects sensitive electronics
  • 300 W continuous with 500 W surge handles heavy loads
  • Low idle draw under .5 A saves battery capacity
  • Dual GFCI-protected NEMA 20R outlets for safe AC access
  • UL-certified safety with full overload and thermal protection

Purpose and fit

The Samlex PST-300-24 is a 300 watt pure sine wave inverter that changes 24 VDC into 120 VAC 60 Hz power. It suits mobile or backup installations where clean AC is required for sensitive electronics, small appliances or emergency lighting. The unit is not intended for loads that exceed 300 watts continuous or 500 watts surge. Buyers who need higher continuous output or multi-kilowatt capacity should look elsewhere.

Capacity and headroom

Continuous output is rated at 300 watts with a 500 watt surge allowance for brief starts. The inverter accepts a 24 volt nominal input and operates across a 21.0 to 33.0 VDC window, so it tolerates normal battery voltage swing. AC power is delivered through dual GFCI protected NEMA-20R outlets on the front panel. Low idle draw stays below 0.5 amps to preserve battery reserve during standby periods.

Thermals noise and power draw

A temperature controlled cooling fan runs only when needed, reducing energy consumption and audible noise under light loads. Protection circuits cover low voltage, over voltage, over temperature, overload and short circuit, with LED indicators for each status. The compact chassis measures 9.69 by 5.76 by 2.58 inches and carries ETL certification to UL standards for commercial grade, continuous duty operation.

How it compares

Measured against everything we stock in DC-to-AC Power Inverters, at today’s prices. Recalculated every night.

Price $219.99
Pricier than about 90% of the 866 comparable items (median $25.99).

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Specifications

Product
Brand nameSamlex
Model namePST-300-24

Questions about this item

Will the 24 VDC input accept the 21.0–33.0 VDC range from my existing battery bank?

Yes, the inverter operates on a 24 VDC input with a working range of 21.0 to 33.0 VDC, matching typical 24 V battery systems.

How can I confirm the pure sine wave output is stable at 120 VAC 60 Hz after installation?

The front-panel LED indicators show power status and protection states, while the dual GFCI outlets deliver 120 VAC at 60 Hz for direct device testing.

Which cables are included and what must I source separately for a permanent battery connection?

Included are a detachable cable with 12 V plug adapter and a detachable cable with battery clamps; permanent ring-terminal leads are not supplied.

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