12000W Split Phase Pure Sine Wave Inverter
Choose one fixed 24V, 36V or 48V DC input version. Each variation provides 120/240VAC split phase output at 60Hz for large off-grid, backup and workshop power systems.
Select One DC Input Version
Important: 24V, 36V and 48V are separate fixed-input models. This inverter does not automatically change between battery voltages. Select the variation that matches the nominal voltage of your battery bank.
120/240V Split Phase Output
Run common 120V branch loads and compatible 240V equipment from one inverter platform. When 120V and 240V outputs are used at the same time, the total combined load must remain within 12000W.
Load planning: Keep each 120V leg at or below 6000W and balance 120V loads between L1 and L2 when practical. Motor and compressor loads need extra startup headroom.
Product Highlights
Product Photos
Technical Specifications
| Brand / Series | SPT Series |
| Configuration | Standard standalone model |
| Continuous Power | 12000W |
| Peak Power | 24000W |
| DC Input Options | 24V / 36V / 48V DC |
| AC Output | 120/240VAC split phase |
| Output Connections | L1 + N = 120V; L2 + N = 120V; L1 + L2 = 240V |
| Output Frequency | 60Hz |
| Waveform | Pure sine wave |
| Efficiency | 90% or higher |
| No-Load Consumption | Less than 50W |
| AC Regulation | 3% |
| Total Harmonic Distortion | Less than 5% |
| Cooling | Two temperature-controlled cooling fans |
| Unit Size | Approx. 21 x 12 x 6.2 in / 53.3 x 30.5 x 15.7 cm |
| Net Weight | Approx. 37 lb / 16.8 kg |
| Shipping Package | Approx. 27.6 x 15.2 x 11.3 in; gross weight approx. 44 lb |
| Operating Environment | -10C to +50C; 20%-90% RH, non-condensing |
DC Protection Reference
| Selected Version | Operating Range | Low-Voltage Alarm | Low-Voltage Shutdown | Overvoltage Shutdown |
|---|---|---|---|---|
| 24V DC | 21-30V | 19.5-21.5V | 18.5-20.5V | 30.5V |
| 36V DC | 30-45V | 29.5-31.5V | 29-30V | 45.5V |
| 48V DC | 42-60V | 43-45V | 41.5-42.5V | 61.5V |
Load and Battery Planning
Resistive and Electronic Loads
For lighting, televisions, chargers and other stable loads, size the inverter above the total continuous wattage that may run at the same time.
Motor and Compressor Loads
Pumps, air conditioners, refrigerators, compressors, microwaves and power tools can draw several times their running wattage during startup. Check the appliance surge requirement before ordering.
Installation Notes
- Install in a clean, dry and well-ventilated location with clear airflow around both cooling fans.
- Keep DC cables as short as practical and size the cables, fuse or breaker, disconnect and battery bank for the maximum DC current of the selected input version.
- Confirm polarity and make all DC connections with the inverter switched off.
- The AC hardwire layout provides L1, N, L2 and ground. Use a qualified electrician for panel, transfer-switch and fixed-building connections.
- Neutral and ground bonding depends on the complete system design and local electrical code. Do not add a neutral-ground jumper inside the inverter output.
- Do not connect the inverter output directly to utility power or a generator output. Use approved transfer equipment where multiple AC sources are present.
Why Choose WZRELB
Yueqing Reliable Electric Co., Ltd. focuses on inverter and power-conversion products for off-grid solar, backup power, mobile power and industrial applications.
The SPT series is designed for systems that require both 120V branch circuits and 240V loads. Our team can help confirm the correct battery voltage and load configuration before production and shipment.
Product Certification
Multiple authoritative certifications have been obtained through multiple international authoritative institutions, including RoHS,UKCA,CE,FC,etc
Before You Order
- Select exactly one DC input variation: 24V, 36V or 48V.
- Confirm that 120/240VAC split phase and 60Hz match the equipment and electrical system.
- List all simultaneous loads and verify the startup surge of the largest motor or compressor.
- Plan the 120V loads so neither L1 nor L2 exceeds 6000W.
- Contact us before ordering if you need help confirming battery-bank voltage, load compatibility or certification documents.
Payment and Delivery
Payment is processed through eBay checkout. The handling time, carrier service, delivery estimate and destination eligibility displayed by eBay apply to the order.
Import duties, taxes and other destination charges, where applicable, are determined by the destination and eBay checkout information.
Warranty and Returns
The inverter includes a 12-month warranty for non-artificial damage. Warranty support requires the order details and operating information needed to diagnose the issue.
Return eligibility and timing are governed by the policy displayed on the eBay listing. Inspect the product and confirm the selected input voltage before installation.
Questions?
Please message us through eBay with your battery-bank voltage, continuous loads, largest startup load and destination if you need help before ordering.