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Inverter with Battery Charger
SW Inverter/Charger - 230 VAC/50 Hz

The SW Inverter/Charger is our most popular off-grid power solution. Available in 24- and 48-volt models, it provides utility-grade output power and offers high surge capacity to run most household appliances.

Product Info | Specifications | Datasheet


The SW Inverter/Charger is our most popular off-grid power solution.  Available in 24- and 48-volt models, it provides utility-grade output power and offers high surge capacity to run most household appliances.  The SW offers many programmable features including automatic generator start and stop, and automatic load sensing.  Its built-in, fully automatic, three-stage battery charger is designed to bring maximum charge to batteries, while using minimum generator run time and fuel.


  • Available in 3000 and 4500 watt models
  • Utility grade, sine wave power
  • Durable construction for long life under extreme environmental conditions
  • Three-stage battery charging (bulk, absorption, and float) and battery equalization with remote temperature sensor for increased performance
  • Programmable control module with LCD display and LED indicators
  • Low idle current (less than 1 watt) conserves energy when no loads are present
  • Soft start capability for starting heavy loads
  • Built-in starting control circuits for two- and three-wire generator starting systems

Expandable and Flexible

  • Parallel stacking capability for more power at the same voltage (optional equipment is required)
  • Three phase configurations available in a Power Module System for industrial quality power in remote locations (optional equipment is required; only available on 48-volt models).



Technical Specifications

SW3012E, SW3024E & SW4548E


Electrical Specifications


AC input voltage


230 VAC


AC input voltage range


150-288 VAC


AC input current


30 amps AC pass through 15 amps AC charging


Continuous Power @ 25°C


3300 VA for SW3024E & SW3048E
4500 VA for SW4548E


Efficiency (Peak)


94 %


Output voltage (RMS)


230 VAC


Output voltage Regulation


+/- 5%




Sine wave, 34 to 52 steps per cycle


(Nominal +/- 0.04% crystal controlled)


50 Hz


Continuous output @ 25°C


14 amps AC for SW3024E & SW3048E
19 amps AC for SW4548E


Total Harmonic Distortion


< 5%


Automatic transfer relay


30 amps AC pass through 15 amps AC charging


DC input voltage (Nominal)


24 VDC for SW3012E
48 VDC for SW3048E & SW4548E


DC input voltage range


22-33 VDC for SW3012E
44-66 VDC for SW3048E & SW4548E


DC current at rated power


176 amps DC for SW3012E
88 amps DC for SW3048E
120 amps DC for SW4548E


Short circuit current


320 amps DC for SW3012E
160 amps DC for SW3048E
180 amps DC for SW4548E


Idle consumption


< 16 watts for SW3024E & SW3048E
< 20 watts for SW4548E


Search mode consumption


< 1 watt


Low battery protection (Enabled)


Adjustable low battery cut out


Max. charge rate (adjustable)


100 amps DC for SW3012E
50 amps DC for SW3048E
60 amps DC for SW4548E


Load Sensing (Inverter Mode)


Adjustable, 0 to over 200 watts (48 watts default)


General Specifications


Specified temperature range


32°F - 77°F (0°C - 25°C)


Enclosure type


Indoor, ventilated, steel chassis with powdercoat finish


Unit weight


105 lb (48 kg)




111 lb (50 kg)


Inverter dimensions (H x W x D)


15 x 22.5 x 9" (38 x 57 x 23 cm)


Shipping dimensions (H x W x D)


20 x 27 x 15" (52 x 69 x 40 cm)




Wall mount




Two years


Part Numbers




Features & Options


Forced air cooling


Standard variable speed brushless DC fans


Three-stage charging


Standard three-stage (bulk, absorption, and float)


Control panel


Standard built-in, two line, backlit, alphanumeric LCD with 8 LED status indicators


Auto Generator Control System


Standard automatic generator control system for two and three wire start generators


Auxiliary Relays


Standard three user adjustable voltage controlled signal relays for control of loads or charing sources


Battery Temperature Sensor


BTS - standard remote battery temperature sensor for increased battery performance


Remote Control


SWRC - optional remote control and status indicator


Conduit Box


SWCB - optional side mount conduit box for code-compliant DC wiring connections


Regulatory Approvals


CE Mark


Note: Specifications subject to change without notice.

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