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Xantrex SWCA-II

The Xantrex SWCA Communications Adapter (manufactured by Xantrex) has been discontinued. We at RightHand Engineering now manufacture the SWCA-II which is electrically identical, but physically slightly different. Although small, the SWCA-II is more than just a connector hood. A tiny microprocessor inside the hood transforms the proprietary signals on the inverter's "remote" DB-25 connector into RS-232 signals which allow a PC to communicate with the inverter.

The SWCA-II comes with a 25-foot modular connectorized cable, a 9-pin PC serial port adapter and our Windows-based WinVerter™-Control SW software (PC control panel emulation). This adapter is required by all WinVerter™ software .

NOTES: We can not warrant replacement of a failed SWCA unless it is properly installed with the SWCA Surge Protector below. We are not responsible for any damage to your PC due to its connection to the SWCA.

SWCA SWCA cable and etc.

Price & Availability

Our price is $250 + $10 Shipping. Available now. Click here to order.

SWCA Surge Protector

Strongly recommended for installations where the 25 foot Trace SWCA Communications Adapter serial cable must be extended, or where the SWCA serial port wiring traverses between buildings. When wired to a suitable ground it will help shunt harmful static or lightning-induced surges to earth providing protection for your SWCA. Nothing will totally protect against a direct lightning hit!

NOTE: This will not necessarily protect your PC serial port from surges. To protect your PC we recommend also using the RS-232 optical isolator (Model 9SPOP2) from B & B Electronics (www.BB-elec.com). We are not responsible for any damage to your PC due to its connection to the SWCA.


The SWCA Surge Protector is the white box to the left.
The Trace SWCA is the grey device to the right marked "CE".

Price & Availability

$30 + $5 Shipping. Available now. Click here to order our products.

SWMA Memory Adapter

The SWMA Memory Adapter provides backup power to the inverter's memory circuitry so that when power is disconnected, the inverter's Setup Menu parameters are retained. Without the Memory Adapter, removal of AC and DC power causes the volatile memory containing the 45 operating parameters to revert to the factory default settings.

The SWMA consists of a backup-battery container and a power converter that plugs into the inverter's 25-pin "Remote" connector. The battery container matches the finish of the inverter and holds 4 alkaline "D" cells (not included). It is permanently wired to the power converter with length sufficient to locate the battery container on either end of the inverter. The power converter changes the backup battery voltage to the voltage required by the inverter's internal circuitry, and it senses low-battery voltage. When the backup battery voltage drops too low a LED on the converter starts blinking as a reminder to change the "D" cell batteries. The power converter also provides a 25-pin passthrough connector so that the SWCA or SWRC may be connected at the same time as the SWMA.

A fresh set of good quality alkaline cells will power the inverter memory for up to 14 days. Attachment of accessories such as the SWCA or SWRC may reduce this time.

The SWMA Memory Adapter is manufactured exclusively by RightHand Engineering. It's design is sanctioned and approved by Xantrex for use with their Trace-brand SW and PS Series inverters.

Price & Availability

Our price is $200 + $10 Shipping. Available now. Click here to order our products.

Frequently Asked Questions (FAQs)

Click here to find your questions about SWMA and other products to be answered.

Download the SWCA Accessory specification sheet.

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