
Siemens
Siemens Differential Pressure Monitor QBM81-3
Siemens QBM81-3 differential pressure monitor with a 20-300 Pa operating range, used as an air pressure switch.
At a glance
- Also known as 7550156
£83.39
£69.49 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Siemens QBM81-3 is a differential pressure monitor covering a range of 20-300 Pa. It is supplied as an air pressure switch for monitoring differential pressure within that range. The device carries the manufacturer part number QBM81-3.
Before you order
- Confirm the existing device is marked QBM81-3, or that the QBM 81-3 reference matches your requirement.
- Check that the 20-300 Pa range covers the pressure differential you need to monitor.
- Verify the switching and connection arrangement required by the installation before ordering.
Compliance
| Alternative numbers | 7550156 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SIEMENS SENSORS | — | — | — |
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.
