SKU: EFS-TransferSwtich-US-306A
Official store listing
Sources
EcoFlow's US store product data prints "sku":"EFS-TransferSwtich-US-306A" for the option "Transfer Switch 306A - 125/250V (For DELTA Pro 3*1/DELTA Pro Ultra*1/ DELTA Pro*2)", captured October 27, 2026.
Official store listing: EcoFlow store Checked Oct 27, 2026 · Earlier document
Location: variants: "Transfer Switch 306A - 125/250V (For DELTA Pro 3*1/DELTA Pro Ultra*1/ DELTA Pro*2)", sku
Documented
Safety listing: cULus 1008 Listed
Official store listing
Sources
Printed as "cULus 1008 Listed" in the listing description; no certificate number is printed.
Official store listing: EcoFlow store Checked Oct 27, 2026 · Earlier document
Location: Description (body_html)
Documented
Dimensions: 6.79 L
Calculated: Enclosure volume: W × H × D ÷ 1,000,000
W: 196.85 × H: 285.75 × D: 120.65 mmW: 7.75 × H: 11.25 × D: 4.75 in convertedOfficial product page
Sources
Converted: 7.75 x 11.25 x 4.75 in x 25.4 mm/in
Printed as "Dimensions (W x H x D) 7.75 X 11.25 X 4.75" with no unit; read as inches (EcoFlow's US table, shipping weight in lbs.) and converted.
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: "Specs - Transfer Switch 306A - 250V" table, Dimensions (W x H x D)
Calculated
Input sources: One power inlet (NEMA L14-30)
Official product page
Sources
Printed as "Power Inlet, NEMA NEMA L14-30".
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: "Specs - Transfer Switch 306A - 250V" table, Power Inlet, NEMA
Documented
Current rating: 30 A
Official product page
Sources
Printed in the Specs - Transfer Switch 306A - 250V table: "Amps @250 VAC 30A".
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: "Specs - Transfer Switch 306A - 250V" table, Amps
Documented
Operation: Manual
Official product page
Sources
EcoFlow's FAQ on this listing prints "The Pro/Tran 2® is a manual transfer switch that allows you to safely connect a portable generator to your home's electrical system"; Pro/Tran 2 is the switch line these options belong to.
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: FAQs
Documented
Voltage rating: 250 V
Official product page
Sources
Printed in the table's Voltage row; 120/240 V split phase as "125V / 250V".
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: "Specs - Transfer Switch 306A - 250V" table, Voltage
Documented

All specs6

Safety listing: cULus 1008 Listed
Official store listing
Sources
Printed as "cULus 1008 Listed" in the listing description; no certificate number is printed.
Official store listing: EcoFlow store Checked Oct 27, 2026 · Earlier document
Location: Description (body_html)
Documented
Dimensions: 120.65 D × 196.85 W × 285.75 H mm4.75 D × 7.75 W × 11.25 H in converted
Converted: 7.75 x 11.25 x 4.75 in x 25.4 mm/in
Official product page
Sources
Converted: 7.75 x 11.25 x 4.75 in x 25.4 mm/in
Printed as "Dimensions (W x H x D) 7.75 X 11.25 X 4.75" with no unit; read as inches (EcoFlow's US table, shipping weight in lbs.) and converted.
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: "Specs - Transfer Switch 306A - 250V" table, Dimensions (W x H x D)
Converted
Input sources: One power inlet (NEMA L14-30)
Official product page
Sources
Printed as "Power Inlet, NEMA NEMA L14-30".
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: "Specs - Transfer Switch 306A - 250V" table, Power Inlet, NEMA
Documented
Current rating: 30 A
Official product page
Sources
Printed in the Specs - Transfer Switch 306A - 250V table: "Amps @250 VAC 30A".
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: "Specs - Transfer Switch 306A - 250V" table, Amps
Documented
Operation: Manual
Official product page
Sources
EcoFlow's FAQ on this listing prints "The Pro/Tran 2® is a manual transfer switch that allows you to safely connect a portable generator to your home's electrical system"; Pro/Tran 2 is the switch line these options belong to.
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: FAQs
Documented
Voltage rating: 250 V
Official product page
Sources
Printed in the table's Voltage row; 120/240 V split phase as "125V / 250V".
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: "Specs - Transfer Switch 306A - 250V" table, Voltage
Documented

Published claims and calculations, not independent test results.

Documents

1 on file

WEB
EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture)OfficialEcoFlowOfficial product page
Source details
Revision
Not stated
Revision date
Not stated
Archived copy captured on 2026-10-27.
Location: Specs - Transfer Switch 306A1 -125V; Specs - Transfer Switch 306A - 250V; Specs - Transfer Switch A510A-125/250V with 50A; FAQs
Retrieved Oct 27, 2026
EcoFlow's own US store page for the Home Backup Kit: Transfer Switch listing (options 306A1, 306A1 for DELTA Max, 306A and A510A), captured October 27, 2026 with the paced research fetcher (robots.txt read first). Its three "Specs - Transfer Switch" tables, product text and FAQ are read. Manufacturer statements, not independent tests; EcoFlow's documents are not added as sources (EcoFlow's terms are classed forbids, so only its HTML pages and store data are cited).
Open

Submit a document

Warranty

Product warranty: 5 years
Official product page
Sources
Printed as "Warranty 5 Years".
Official product page: EcoFlow US store product page: EcoFlow Home Backup Kit: Transfer Switch (us.ecoflow.com, October 27, 2026 capture) Checked Oct 27, 2026 · Earlier document
Location: "Specs - Transfer Switch 306A - 250V" table, Warranty
Documented

Sellers

Affiliate links below. Affiliate disclosure

ShopSolar

1 review

Listing SKU EFS-TransferSwtich-US-306A

$349Recorded Nov 12, 2026

Visit sellerPaid link.

Report a seller problem

Price history

$349

Prices we read at ShopSolar · 12 readings · no change in our readings since Oct 27, 2026

Chart, listings & data

Since Oct 27, 2026 · Listing price (USD)

ShopSolarView listing Paid link.

ShopSolar$349Nov 12, 2026, 1:26 AM PSTLatest check · hover or tap for earlier prices

A break in a line is a gap in our readings: no price is drawn for days we did not read.

Price data

Collected price observations by seller
Checked (UTC)	Seller	Price
Oct 27, 2026, 12:42 PM PDT	ShopSolar Paid link.	$349
Oct 28, 2026, 1:26 AM PDT	ShopSolar Paid link.	$349
Oct 29, 2026, 1:16 AM PDT	ShopSolar Paid link.	$349
Oct 30, 2026, 1:26 AM PDT	ShopSolar Paid link.	$349
Oct 31, 2026, 1:27 AM PDT	ShopSolar Paid link.	$349
Nov 3, 2026, 1:06 AM PST	ShopSolar Paid link.	$349
Nov 4, 2026, 1:07 AM PST	ShopSolar Paid link.	$349
Nov 5, 2026, 3:52 AM PST	ShopSolar Paid link.	$349
Nov 6, 2026, 1:07 AM PST	ShopSolar Paid link.	$349
Nov 7, 2026, 1:17 AM PST	ShopSolar Paid link.	$349
Nov 8, 2026, 1:16 AM PST	ShopSolar Paid link.	$349
Nov 12, 2026, 1:26 AM PST	ShopSolar Paid link.	$349