Samlex PST-3000-12 | 12v 3000 Watt Pure Sine Wave Power Inverter

Power your household appliances and electronics from your RV battery bank with the Samlex PST-3000-12 Pure Sine Wave Power Inverter. Delivering 3,000 watts continuous and 6,000 watts surge, this rugged 12V inverter converts DC battery power into clean, utility-grade AC — the same quality of electricity that comes out of the wall at home, and the kind sensitive electronics actually need.

True Pure Sine Wave — Same Quality as the Grid

The PST-3000-12 produces true pure sine wave AC output, which is the same quality and waveform as the power delivered by your utility company. That matters: cheaper modified sine wave inverters (the kind big-box stores sell) produce a stepped, square-like waveform that can cause issues with sensitive electronics, motors, CPAP machines, microwaves, and modern appliances. With true pure sine, everything runs the way it's designed to — quietly, cleanly, and without the buzzing or interference that modified sine introduces.

3,000W Continuous, 6,000W Surge

The PST-3000-12 is built to handle real-world household loads:

• 3,000W continuous output for everyday appliances
• 6,000W surge rating handles the high inrush current of motors, compressors, and similar startup-heavy loads
• >85% peak efficiency — more of your battery power becomes usable AC, less wasted as heat

Wide DC Input Range for Solar & Equalization Charging

One of the PST-3000-12's standout features for off-grid and solar setups: a wide DC operating range of 10.7 to 16.5 volts. This makes it compatible with high-voltage DC charging scenarios like solar and equalization charging — situations where lesser inverters trip out from overvoltage. If you're running solar, this is the right inverter for the job.

Built for Reliability and Long Life

The heavy-duty chassis allows the PST-3000-12 to cool itself via convection, dramatically reducing fan runtime compared to inverters that rely on constant forced cooling. The result: longer fan life, quieter operation, and a remarkably low no-load draw of under 1.6 amps — important for off-grid setups where every watt of parasitic draw matters.

Comprehensive Protection

The inverter includes a universal protection circuit that guards against:

• Low voltage and over-voltage
• Over-temperature
• Over-load (shutdown at 110–115% for 2–2.5 sec)
• Short circuit

A built-in low battery voltage alarm warns you before the inverter shuts down, giving you time to address the situation before losing power.

Flexible AC Connections

The PST-3000-12 includes both a dual GFCI-protected NEMA 5-20R duplex receptacle for plug-in use and a terminal block for hardwiring into your RV's AC distribution panel — so you can use it as a portable inverter or a permanent installation depending on your setup.

Need an Integrated Charger and Transfer Relay?

The PST-3000-12 is an inverter only. If you'd like an all-in-one solution with the same 3,000W pure sine output plus a built-in 130A battery charger and 70A automatic transfer relay, check out the Samlex EVO-3012 Inverter/Charger — the right choice if you're building a complete off-grid power system from scratch.

Key Features

• 3,000W continuous / 6,000W surge pure sine wave inverter
• True pure sine wave AC output — utility-grade power quality
• >85% peak efficiency
• Wide DC input range (10.7–16.5V) — solar and equalization charging compatible
• Dual GFCI-protected AC outlets plus hardwire terminal block
• Low no-load draw — under 1.6A
• Convection-cooled chassis with temperature-controlled fan
• Universal protection circuit (under/over voltage, over-temp, overload, short circuit)
• Low battery voltage alarm
• Backed by a 3-year limited warranty

Specifications

• Brand: Samlex
• Model: PST-3000-12
• Type: 12V Pure Sine Wave Power Inverter
• Continuous Output: 3,000W
• Surge Output: 6,000W (< 8 ms)
• Peak Efficiency: 85%
• Output Voltage: 120 VAC ±3%
• Output Frequency: 60 Hz ±1%
• Output Waveform: Pure sine wave
• Maximum Output Current: 25A
• AC Output Connections: NEMA 5-20R GFCI duplex receptacle + terminal block (hardwire)
• Nominal DC Input: 12V
• DC Input Voltage Range: 10.7–16.5 VDC
• Maximum Input Current: 360A
• DC Input Current at No Load: <1.6A
• Low DC Input Voltage Alarm: 10.7V ±0.1V
• Low DC Input Voltage Shutdown: 10V ±0.1V
• High DC Input Voltage Shutdown: 16.5V
• Overload Shutdown: 110–115% for 2–2.5 sec
• Cooling: Convection + temperature-controlled forced air
• Operating Temperature: -4°F to 104°F
• Dimensions: 17.97" L x 10.35" W x 5.71" H
• Weight: 21.6 lbs (Shipping: 25 lbs)
• UPC: 622988072420
• Warranty: 3-year limited