The Otis inverter GAA21305WS10 is the Ultra Drive 403B lift drive, the 110VAC version with the DC caps external, and it is supplied with the board GCA26800QC2. This Otis lift inverter controls the traction machine in a VVVF system, and it is fitted in the lift control panel. It is also known as the Otis frequency converter, the Otis lift drive, the Otis VVVF inverter and the Otis Ultra Drive assembly.
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Other versions of the same Otis Ultra Drive 403B:
Other Otis Ultra Drive inverters and boards:
Potensi supplies the Otis inverter GAA21305WS10, the Otis Ultra Drive 403B and other Otis lift drives and boards. The models above are only a part of what we can supply. We stock and source a much wider range of related and alternative models. If your model number is not listed here, please send us the model number or a photo of the original part, and we will confirm availability and the correct match for you.
Q1: What is the GAA21305WS10 inverter used for?
R: It is the Otis Ultra Drive 403B lift inverter, and it controls the speed of the traction machine of the lift. It is the 110VAC version with the DC caps external, and it is fitted in the lift control panel. The unit is supplied together with the board GCA26800QC2.
Q2: What other names and part numbers is this inverter known by?
R: The inverter is written GAA21305WS10, and it is also written GDA21305WS10 in some supplier listings. It is best known as the Ultra Drive 403B, and it is also called the Otis lift inverter, the Otis frequency converter, the Otis VVVF drive and the Otis lift drive. The unit is also listed with the board GCA26800QC2 as part of the description.
Q3: Which version of the Ultra Drive 403B is this, and how do I check it?
R: This is the version marked 110VAC with the DC caps external, and the DC caps version is part of the identification of the drive. The same drive is also supplied as the 110VAC version with the DC caps internal, under a different part number. Please compare the part number and the version marking on your original drive before ordering, because the external and the internal versions are not the same unit.
Q4: What board is supplied with this inverter?
R: This drive is supplied with the board GCA26800QC2. The DC caps internal version of the same drive is supplied with the board GCA26800QC7. If you only need the board, please send us a photo of the board and its label, and we will confirm the correct one for your drive.
Q5: Which Otis lifts is it used on?
R: It is used on Otis lifts that are fitted with the Ultra Drive 403B inverter. The drive works with the lift controller of the installation, and the exact configuration depends on the controller type and the lift data. Please confirm the lift model, the controller type and the drive part number before ordering.
Q6: How can I confirm this inverter matches my lift, and do you supply other Otis drives and boards?
R: Please compare the part number, the version marking and the connector and terminal layout with your original drive. If you are not sure, please send clear photos of the drive, the board inside it and the rating label, and our technical team can help identify the correct unit. We also supply the other Ultra Drive 403B versions, the Ultra Drive OVFR03B-401 and OVFR03B-402 inverters, the Otis drive boards and other Otis lift control parts.
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