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Part #MS3748AEJ

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  • Pure sine wave – Power your T.V.s, stereos, plasma screens, and other sensitive electronics without worry. The pure sine wave inverter and power factor corrected charger provide clean, reliable inverter power with low total harmonic distortion (THD) of less than 5%.
  • Versatile mounting – Mount the MS3748AEJ on a shelf, bulkhead, or even upside down.
  • Lightweight – The lightweight aluminum base and cover also provides noise reduction and corrosion resistance.
  • Multiple ports – The MS3748AEJ provides multiple ports, including an RS485 communication port for network expansion, and a remote port.
  • Accessible design – The extra large AC access cover with terminal screw block and 360° DC connection terminals with covers make this inverter more accessible when it needs to be.
  • Convenient switches – The MS3748AEJ comes with an on/off inverter-mounted switch with an easy-to-read LED indicator.
  • Buy with ease – The MS3748AEJ is backed by a two-year (24-month) limited warranty.


Input battery voltage 36 - 67.6 VDC
Nominal AC output voltage 120/240 VAC ±5%
Output frequency and accuracy 50 Hz ± 0.4 Hz
Total Harmonic Distortion (THD) < 5%
1 msec surge current (amps AC) 70
100 msec surge current (amps AC) 32
5 sec surge power (real watts) 6200
30 sec surge power (real watts) 6000
5 min surge power (real watts) 5400
30 min surge power (real watts) 4000
Continuous power output at 25° C 3700 VA
Maximum continuous input current 90 A @ 50.4 V
Inverter efficiency (peak) 91%
Transfer time ~ 20 ms
Search mode (typical) 10 watts
No load (230 VAC output, typical) 22 watts
Waveform Pure Sine Wave
Continuous output at 25° C 60 ADC
Charger efficiency (peak) 91%
Power factor > .95
Input current at rated output (AC amps) 16 A @ 240 V (8 A per leg)
Transfer relay capability 30 amps AC per leg
Five stage charging capability Bulk, Absorb, Float, Equalize (requires remote), and Battery Saver™
Battery temperature compensation Yes, 4.6 m (15’) Battery Temp Sensor standard
Internal cooling 0 to 120 cfm variable speed drive using dual 92mm brushless DC fans
Overcurrent protection Yes, with two overlapping circuits
Overtemperature protection Yes on transformer, MOSFETS, and battery
Corrosion protection Yes, PCB’s conformal coated, powder coated chassis/top, and stainless steel fasteners
Listings CE
Warranty Two years
Temperature (Operating/Non-operating) -20° C to +60° C (-4° F to 140° F) to -40° C to +70° C (-40° F to 158° F)
Operating humidity 0 to 95% RH non-condensing
Dimensions (l x w x h) 34.9 cm x 32.1 cm x 20.3 cm (13.75” x 12.65” x 8.0”)
Mounting Shelf (top or bottom up) or wall
Weight 25.0 kg (55 lb)
Shipping weight 28.6 kg (63 lb)
Max operating altitude 4570 m (15,000’)
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