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Image source: Maker series photo: Trace Engineering SW4048, the drawing on the cover of Trace Engineering's SW Series Inverter/Chargers Owner's Manual (part no. 2031-5, rev. B, 1999), whose specification tables name the SW4048. A line drawing of the series, no badge or added text; the crop leaves out the cover's headings. Figure from the manufacturer's document, page 1.No sellers found.
Model number as printed by Trace Engineering in the 60 Hz specifications table of its SW Series owner's manual.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), MODEL row
Documented
Printed as "105 lbs (48 kg)" inverter only; shipping weight 111 lbs (50 kg). Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Weight - Inverter Only row
Documented
Printed as "3 to 5% (stand alone operation)" for every model in the table; the output waveform is printed as "Sinewave, 34 to 52 steps per cycle".
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), AC Output Characteristics
Documented
Printed as "120 vac" RMS output, voltage regulation ± 2%. Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), AC Output Voltage (RMS) row
Documented
Printed as "60 amps DC" maximum charging rate, 3 stage regulation. Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Maximum Charging Rate row
Documented
Converted: 57 cm x 10 = 570 mm; 23 cm x 10 = 230 mm; 38 cm x 10 = 380 mm
Printed as "15” (38 cm) high, 22.5” (57 cm) wide, 9” (23 cm) deep (when wall mounted)" for every model in the table; the centimeter figures are recorded in millimeters, with the 57 cm width as length and the 23 cm depth as width.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Dimensions - Inverter Only row
Calculated
Peak efficiency, printed as "95%". Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Efficiency (peak) row
Documented
Printed as "60 Hz", frequency regulation ± 0.04% (crystal regulated). Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Nominal Frequency row
Documented
Printed as enclosure type "Indoor, ventilated, steel chassis with powdercoat finish" for every model in the table.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Enclosure Type row
Documented
Printed as "3 to 5% (stand alone operation)" for every model in the table; the output waveform is printed as "Sinewave, 34 to 52 steps per cycle".
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), AC Output Characteristics
Documented
Printed as "120 vac" RMS output, voltage regulation ± 2%. Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), AC Output Voltage (RMS) row
Documented
Printed as "60 amps DC" maximum charging rate, 3 stage regulation. Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Maximum Charging Rate row
Documented
Peak efficiency, printed as "95%". Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Efficiency (peak) row
Documented
Printed as "60 Hz", frequency regulation ± 0.04% (crystal regulated). Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Nominal Frequency row
Documented
Printed as "48 vdc". Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Nominal DC Input Voltage row
Documented
Printed as "60 amps AC" automatic transfer relay. Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Automatic Transfer Relay row
Documented
Printed as "0.33 A (16 W)" in On Mode with no load; search mode draws "0.025 A (1 W)". Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), DC Input Requirements, On Mode (no load - idle) row
Documented
Printed as "33 amps AC" continuous output at 25 °C; maximum output is 78 amps AC (RMS). Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Continuous Output (@ 25 °C) row
Documented
Printed as "44 to 66 vdc". Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), DC Input Requirements, Input Voltage Range row
Documented
Converted: 4000 VA / 1000 VA per kVA = 4 kVA
Printed as "4000 VA" continuous power at 20 °C, recorded in kVA; the manual prints this rating in volt-amperes only, so no continuous power in watts is recorded. Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), page 118, Continuous Power @ 20 °C row
Converted
Printed as "105 lbs (48 kg)" inverter only; shipping weight 111 lbs (50 kg). Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Weight - Inverter Only row
Documented
Converted: 57 cm x 10 = 570 mm; 23 cm x 10 = 230 mm; 38 cm x 10 = 380 mm
Printed as "15” (38 cm) high, 22.5” (57 cm) wide, 9” (23 cm) deep (when wall mounted)" for every model in the table; the centimeter figures are recorded in millimeters, with the 57 cm width as length and the 23 cm depth as width.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Dimensions - Inverter Only row
Calculated
Printed as enclosure type "Indoor, ventilated, steel chassis with powdercoat finish" for every model in the table.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Enclosure Type row
Documented
Printed as "Stacking Interface for 2X power (* requires two inverters)" with "SWI * (120/240 vac)" in the SW4048 column: two SW4048 units with the SWI interface give 120/240 VAC.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Options, Stacking Interface for 2X power row
Documented
Printed as allowed temperature range "-40 °F to 140 °F (-40 °C to +60 °C)" (output may not meet specified tolerances); the specified range, within which output meets tolerances, is 0 °C to +40 °C. Every model in the table.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Specifications and Features (60 Hz Models), Environmental Limitations
Documented
Published claims and calculations, not independent test results.
The 1999 owner's manual says the 120 VAC/60 Hertz models of the SW Series are ETL listed to UL Standard 1741 (Draft), Static Inverters and Charge Controllers for use in Photovoltaic Systems. No certificate or file number is given, so this is a manufacturer claim and not issuer-verified. Read on October 4, 2026.
Manufacturer document
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentThe 1999 owner's manual says the 120 VAC/60 Hertz models of the SW Series are also ETL listed to Canadian Standard CSA - C 22.2 No. 107.1 - M1, Commercial and Industrial Power Supplies. No certificate or file number is given, so this is a manufacturer claim and not issuer-verified. Read on October 4, 2026.
Manufacturer document
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentArchived copy captured on 2026-10-04.
Location: Specifications and Features (60 Hz Models), page 118; Introduction, listings
Retrieved
Trace Engineering's own owner's manual for the SW Series, linked as the SW Series owner's guide in the discontinued products section of Xantrex's xantrex.com library. Its 60 Hz specifications table has a column for the SW4048.
Archived copy of a document published by Trace Engineering Company, Inc.. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what Trace Engineering Company, Inc. published. Original address: https://xantrex.com/wp-content/uploads/2023/03/SW2512MC_sw4024mc_OG.pdf. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 8c70ef8b0ef19b29d22186ce53585fb040804a45e6f8b72477d3086cb63f447a
Archived copy captured on 2026-10-04.
Location: Discontinued Products, SW Series, owner's guide link
Retrieved
Used only to show that Xantrex's own library links the Trace Engineering SW Series owner's manual; no figure is cited to this page.
Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.
Archived copy of a document published by Trace Engineering Company, Inc.. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what Trace Engineering Company, Inc. published. Original address: https://xantrex.com/wp-content/uploads/2023/03/SW2512MC_sw4024mc_OG.pdf. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 8c70ef8b0ef19b29d22186ce53585fb040804a45e6f8b72477d3086cb63f447a
Printed as "Trace Engineering warrants its power products against defects in materials and workmanship for a period of two (2) years from the date of purchase", extended to all purchasers or owners during the warranty period. The warranty given then by a company that no longer trades under that name.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentLocation: Warranty/Repair Information, Limited Warranty
Documented
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Own one? A verified review needs a receipt and a serial number photo, and counts 19× in the owner rating.
The Evidence score uses the priorities you choose. It counts published documents, such as certificates and warranty terms, and it compares a documented figure with the best documented figure of the same kind. It does not count owner reviews, and it is not a verdict on product quality or on how many people have reviewed it. A low score can mean little is documented, or that a documented figure is below the best of its kind. Undisclosed data scores 0.
Missing details. This number counts only the evidence recorded so far. The source review for this product is not finished, or the maker has not disclosed enough, so the number can only go up.
Missing for this product: Battery conversion efficiency needed.
Each input is scored against the best documented value for an inverter: warranty term and battery conversion efficiency against every published inverter, idle consumption (lower is better) against the inverters in the same output band, or against every published inverter when the output is not documented. A documented value always earns points; an undisclosed one earns 0 and is listed as missing. Researched products receive a score. Certificates earn points for the evidence itself. Size and weight do not affect scores.
Manufacturer claim; issuer verification pending. Applies to the exact inverter.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier document2 of 25 years, the best documented for an inverter (printed by the maker): APsystems DS3
Printed as "Trace Engineering warrants its power products against defects in materials and workmanship for a period of two (2) years from the date of purchase", extended to all purchasers or owners during the warranty period. The warranty given then by a company that no longer trades under that name.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier document16 against 0.021 W, the lowest documented for an inverter (printed by the maker): Enphase IQ8M Microinverter IQ8M-72-2-US
Printed as "0.33 A (16 W)" in On Mode with no load; search mode draws "0.025 A (1 W)". Read from the SW4048 column (the third model column) of the 60 Hz specifications table in Trace Engineering's SW Series owner's manual (Part No. 2031-5, Rev. B, September 1, 1999, revision 4.01 software). The SW4048K and SW4048J are separate 105 VAC models in the same manual and are not this record.
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentResearch pending, 0 points: Battery conversion efficiency.
Warranty term and battery conversion efficiency are compared with every published inverter; idle consumption with every published inverter because its output is not documented. · Method version 0.5
How it worksThe 1999 owner's manual says the 120 VAC/60 Hertz models of the SW Series are ETL listed to UL Standard 1741 (Draft), Static Inverters and Charge Controllers for use in Photovoltaic Systems. No certificate or file number is given, so this is a manufacturer claim and not issuer-verified. Read on October 4, 2026.
Models: SW4048
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentThe 1999 owner's manual says the 120 VAC/60 Hertz models of the SW Series are also ETL listed to Canadian Standard CSA - C 22.2 No. 107.1 - M1, Commercial and Industrial Power Supplies. No certificate or file number is given, so this is a manufacturer claim and not issuer-verified. Read on October 4, 2026.
Models: SW4048
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentThe 1999 owner's manual says the 120 VAC/60 Hertz models of the SW Series are ETL listed to UL Standard 1741 (Draft), Static Inverters and Charge Controllers for use in Photovoltaic Systems. No certificate or file number is given, so this is a manufacturer claim and not issuer-verified. Read on October 4, 2026.
Manufacturer document
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentThe 1999 owner's manual says the 120 VAC/60 Hertz models of the SW Series are also ETL listed to Canadian Standard CSA - C 22.2 No. 107.1 - M1, Commercial and Industrial Power Supplies. No certificate or file number is given, so this is a manufacturer claim and not issuer-verified. Read on October 4, 2026.
Manufacturer document
Official instruction manual: Trace Engineering SW Series Inverter/Chargers With Revision 4.01 Software, Owner's Manual (Part No. 2031-5, Rev. B, September 1, 1999), as hosted by Xantrex on xantrex.com Checked · Earlier documentNo sourced accessories or replacement parts listed yet.
Manufacturer SKU SW4048
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