GoodWe GW125K-STS-G10
GoodWe GW125K-STS-G10 is the 125 kW static transfer switch for the GoodWe ET 80 / 99.99 / 100 kW C&I hybrid inverters.
- Paired specifically to the GW80K-ET-G10 / GW99.99K-ET-G10 / GW100K-ET-G10 trio; GoodWe's separate STS200-80-10 (138 kVA, IP65) is a physically different box for the ET50 and is not interchangeable.
- Under 10 ms on-grid/off-grid transfer time with diesel generator control support.
- IP54 wall-mounted enclosure rated -35°C to +60°C, RS485 communication across grid/back-up/smart-port/inverter-side ports.
- RS485
- Communication
- IP54
- Ingress protection
- Manufacturer
- GoodWe
- Model code
- GW125K-STS-G10
- Item no.
- DLK-GOODWE-GW125KSTSG10
- Delivery
- Delivery to Germany · EUR 14.90 at checkout
Plan with GW125K-STS-G10
New system, extension or replacement? Linker Advisor starts from this article and asks only for what is still open — existing model, quantity, postcode, installation date.
Figures transcribed from the manufacturer datasheet on file. Confirm your grid code and configuration with our engineers before ordering.
- GoodWe · SAJ · Pylontech · EcoFlow · Chint paired from the maker’s own lists
- Datasheets on file for every item
- Within 24 h engineering response
- MOQ 1 unit · EU delivery
- Engineering-checked configurations
Zero export starts with numbers that hold up.
Bidirectional metering at the grid connection point feeds the inverter the import and export truth it needs.
Sub-10 ms grid to off-grid transfer
UPS-level continuity for critical C&I loads. GoodWe markets the switching as ultra-fast 4 ms; the datasheet's on/off-grid transfer figure is under 10 ms.
Inspect it before you spec it.
Official renders, installation photos and system panels for this model line.
Manufacturer render from the GoodWe STS 125 kW (GW125K-STS-G10) datasheet, EMEA (EN).
Specifications
Every value exactly as published in the official GW125K-STS-G10 documentation.
Documents
Configuration 2
It is the matched static transfer switch for GoodWe's ET C&I hybrid trio: GW80K-ET-G10, GW99.99K-ET-G10 and GW100K-ET-G10, the same 80 / 99.99 / 100 kW units in this catalogue.
- Not the ET50 box: GoodWe's STS Series also contains the STS200-80-10 (138 kVA, IP65). That unit pairs with the ET50 and is a physically different box; the two are not interchangeable.
- Ratings: per GoodWe's datasheet this STS carries 125.0 kW rated power, 137.5 kVA maximum apparent power and 210 A per side.
- Order rule: match the box to the inverter model, then quote the pair together.
Per GoodWe's EMEA datasheet the GW125K-STS-G10 is rated 125.0 kW, with 137.5 kVA maximum apparent power and 210 A rated current.
- 220 V grids: the datasheet lists 75 kW and 75 kVA at 220 V; size against those figures where they apply.
- Grid formats: 3L/N/PE at 127/220, 220/380, 230/400 or 240/415 V nominal, with a 114 to 280 V operating window per local standard.
- Frequency: 50 or 60 Hz nominal; operating ranges 45 to 55 Hz and 55 to 65 Hz.
Installation & wiring 1
The STS is a wall-mounted IP54 unit with four power connections plus an RS485 communication link.
- Ports: Grid, Back-up, Smart Port and Inverter side, each rated 210 A.
- Comms: RS485 to the paired ET hybrid.
- Mounting: wall-mounted; IP54 enclosure with a -35 to +60 C operating temperature range.
- Generator input: diesel generator control is supported, so a genset can be integrated for sites that must ride through a long outage.
Operation & warranty 1
GoodWe's datasheet lists the on-grid / off-grid transfer time as under 10 ms.
- Datasheet vs marketing: GoodWe markets the switching as ultra-fast 4 ms; the datasheet figure is under 10 ms. Engineer the design to the datasheet number.
- Load continuity: a sub-10 ms transfer gives UPS-level continuity for critical C&I loads behind the Back-up port.
- Long outages: diesel generator control is built in for sites that must ride through a long outage.
Availability & compliance 1
IP54. GoodWe's own EMEA datasheet states IP54; at least one dealer listing prints IP64, which is wrong.
- Enclosure: IP54, wall-mounted, operating temperature -35 to +60 C.
- Do not confuse: the IP65 figure belongs to the STS200-80-10, the separate STS in the same series that pairs with the ET50.
- Documentation: the GoodWe STS 125 kW (GW125K-STS-G10) EMEA datasheet (EN) is available as a download.
- Grid-code certificates: the datasheet set here does not state grid-code status for Germany; confirm the exact certificate set for your market with the quote.
General 1
This STS is for the GoodWe ET 80 kW, 99.99 kW and 100 kW C&I hybrids — the same units in this catalogue.
- GoodWe's STS Series contains a second, physically different box (the STS200-80-10, 138 kVA, IP65) which pairs with the ET50.
- Match the box to the inverter.
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