Otis OVFR03B-403(LRU) inverter
Table of Contents
Otis OVFR03B-403(LRU) inverter
OVFR03B-403(LRU) inverter KEA21305ACB5
ID number is KEA21305ACB7/5
Input Voltage 380-415V
Input Current 21-19A
Output Voltage 0-513V
Output Current 30A/15A
Weight is 7KG
Made by otis united china
Ordering the otis ovfr03b-403
To order the otis ovfr03b-403, send us a photograph of the existing unit and its nameplate at [email protected]. Please quote the complete code including any revision suffix so that our team can confirm the correct variant, current stock and lead time before you commit.
About the otis ovfr03b-403
Elevator and escalator installations are built around a relatively small number of serviceable assemblies, but they fail at very different rates. The otis ovfr03b-403 sits in the control board / PCB group, and it is replaced on a different service interval from the assemblies around it. In practice the failures we see on otis ovfr03b-403 come down to electrolytic capacitor ageing, cracked solder joints around the power stage, corroded edge connectors, and blown output transistors after a supply fault.
Every otis ovfr03b-403 we supply is inspected before dispatch. Each unit is checked for physical damage, correct marking and the specific wear or degradation patterns that matter for this class of component, then packed to survive international transit. Where a superseded revision is the only one available, we say so plainly and explain the substitution, so the installing engineer can make an informed decision rather than discovering the difference on site.
Buying guidance and compatibility notes
Before ordering the otis ovfr03b-403, confirm three things. First, the controller catalogue number and the board revision letter, plus the fault code stored in the controller memory. Second, the same board is frequently fitted across several controller families, so the equipment model alone is not enough to identify the right revision. Third, whether the installation is a traction lift or an escalator, since duty cycle and loading differ between the two.
On fitting, one point is worth repeating: discharge the DC bus before removing a power board, and photograph the connector layout before you unplug anything. Almost every repeat failure we see on otis ovfr03b-403 traces back to a related component that was left in place, or to an adjustment that was assumed rather than measured.
When a drive or mother board is replaced, it is worth checking the DC bus capacitors and the cooling path at the same time. A board that failed from overheating will fail again if the fan or heatsink is left as it was.
If you are unsure which variant of the otis ovfr03b-403 you need, send a photograph of the nameplate and the existing component alongside a description of the fault. That is usually enough for our team to identify the correct replacement without a site visit, and it avoids the cost and delay of returning an incompatible part. We are also happy to advise on the other serviceable items in the same control board / PCB group, so a planned shutdown can cover several wear items at once.
Related parts and further reading
Because otis ovfr03b-403 is only one item in the control board / PCB group, these related pages may help you plan the work:
- Elevator spare parts
- Door Operator Controller
- Elevator Display
- Elevator Encoder
- Elevator Service Tool
Reference sources
The compatibility information on this page was cross-checked against the following authoritative references. Always confirm the exact reference against your own equipment nameplate.
