DC control power budget
Add simultaneous DC control loads and an explicit reserve to estimate continuous output watts and amps.
Enable JavaScript for live calculations. Read the method and default example below.
Method and assumptions
- Pload = PLC / other W + coil count × holding W + sensor count × sensor W.
- Pbudget = Pload × (1 + reserve / 100); Ibudget = Pbudget / DC voltage.
- Reserve is a planning assumption, not a manufacturer requirement.
Before using the result
- All listed loads must match the selected DC voltage. AC coil VA and DC coil watts are not interchangeable.
- Check coil pull-in peaks, simultaneous starting, temperature and altitude derating, overload behaviour and branch protection separately. This tool does not select a supply model.
Worked example
Illustrative default inputs. Enter your project values above.
- DC output voltage
- 24 V DC
- PLC and other continuous load
- 25 W
- Simultaneously held DC coils
- 6
- Holding power per DC coil
- 3 W
- Simultaneous sensors
- 10
- Power per sensor
- 0.5 W
- Reserve allowance
- 25 %
Default results
- Connected continuous load
- 48 W
- Budget with reserve
- 60 W
- DC output current budget
- 2.5 A
Choose a reference or send your BOQ
Compare relevant product families, then confirm the exact rating, control supply and duty. Price and availability are confirmed with your enquiry.
Technical references
These references support planning. The exact model documentation and a project-specific engineering review govern the final specification.