Selectronic Australia

Selectronic SA31 & SA41 Inverters

Selectronic SA31 & SA41 Inverters
Features | Specifications

Please note:

As the new models of SE32 and SA32 have improved upon and replaced the SA31, the SA31 inverter is discontinued as of November 23, 1999.

All models are discontinued as of May 2000.

Click here for information on the new SE32 upgradable to Energy Management Mk II.

The SA31 information below is for reference only.


Designed for medium to large remote power systems, these inverters have enough power to start and run all household appliances.

To ensure your inverter will match pefectly to YOUR remote system, all important parameters of the SA31 or SA41 are adjustable via either the inverter front panel or the optional remote keypad.

Demand Start
In standby mode the inverter will turn on and off with any type of load, simply adjust the sensitivity to start the smallest load or overcome a phantom load. This feature will save you valuable battery power and may be overridden if necessary.

High & Low DC Voltage Cut Out
Low voltage and high voltage cut out are fully adjustable. Also a low voltage disconnect option can be selected to fully protect your batteries.

Safety & Reliability
Totally protected against thermal overload, current overload and AC short circuit. The AC output is electrically isolated for your safety, and is M.E.N. compatible. The on board computer monitors all operating parameters within the inverter to ensure trouble free operation. However, should service be required the modular construction allows for quick and easy on-site repairs by any authorised person.

Energy Management

Optional Extras
SA-KP-01 Remote Keypad, SA-SB-01 Output Interface, SA-S200 Current Shunt.







Input Voltage 24V DC
20 - 34V DC
48V DC
40 - 68V DC
Allowable Range
Output Power
at 25°C Ambient
Max Continuous
1/2 Hour Rating
20 Second Surge
Output Power
at 40°C Ambient
Max Continuous
1/2 Hour Rating
20 Second Surge
Input Current 66mA DC
76mA DC
0.70A DC
104A DC
165A DC
350A DC
57mA DC
62mA DC
0.66A DC
65A DC
107A DC
200A DC
Stand By
Stand By w/ Opt. Key Pad
Inverter On, No Load Max
Max Continuous
1/2 Hour Rating
20 Second Surge
Demand Start Sensitivity
Response Time
3 - 20 Watts
1 Second Max
User Adjustable
Low Voltage Disconnect
Low Voltage Shutdown
17V DC
19 - 22V DC
34V DC
38 - 44V DC
Delayed, User Adjustable
Output Voltage Adjustable from 220
to 240V +/- 4%
@ Nominal DC Input, No Load to Full Load
Output Current 9.2A AC
26A AC
12.5A AC
32A AC
Max Continuous
20 Second Surge
Output Waveshape
Output Frequency
Total Harmonic Distortion
True Sine Wave
50Hz +/- .001%
< 4%
Power Factor Limitations Nil
Efficiency Graph
Input/Output Isolation Yes
Max Nett DC Current Measurement 400A DC peak, 200A DC cont.
100A DC cont.
Maximum Remote Keypad
Cable Length
500 Metres
Control Output 2 off @ 50mA Max Each
User Inputs 2 x N/O or N/C Contacts
Back Lit Display Yes
Memory Retention Time Permanent
Operating Temp Range -10 deg C to + 50 deg C
Conforms to Standards AS3100-1990 (wiring) AS/NZS1044-1992 (RFI)


Size (W x H x D) mm 498 x 170 x 370 545 x 170 x 370  
Weight 22kg 32kg
Weight Packed 25kg 35kg
Input Lead Length 1.6 metres with 10mm mounting lug
Output Wiring Method Rear 3 terminal junction box with conduit knock outs
Output Socket Dual switched 3 pin GPO with neon indicators
Chassis Powder coated zinc steel (Wedgewood Blue)
DC Isolation Single Pole Circuit Breaker
Warranty Lifetime Parts and Labour * Conditions Apply

Through a policy of continued development, specifications or sizes quoted are subject to change without notice. Note: All power ratings are at 1.0 Power Factor.

WARNING - All Remote Power System installations must comply with the relevant requirements of your state or national standards. It is imperative that only Registered Electrical Contractors are permitted to install or check any appliance or wiring in your installation.