Siemens 84CP92BDF81 Motor Starter
Trade-offs for Panel Implementation
- The 18 A output rating suits fractional-horsepower AC motors but constrains branch-circuit coordination; full-load ampere derating per NEC Table 430.250 applies.
- Operating temperature range of 20°C–40°C is narrow compared with industrial enclosures that can exceed 50 °C without active cooling.
- RoHS non-compliant status may affect equipment destined for regulated markets; regional substance restrictions should be verified before procurement.
- Chassis mounting requires a dedicated enclosure or panel cutout; DIN-rail adapter availability should be confirmed separately.
- Box packaging implies a bare module rather than a pre-enclosed starter—no integral terminal cover or overload reset mechanism is indicated in the record.
Engineering Verification Checklist
- Confirm branch-circuit protective device rating coordinated with 18 A output and motor FLA.
- Verify enclosure thermal management keeps internal ambient within 20°C–40°C under worst-case load.
- Check that the 120 VAC control voltage matches the upstream power supply and any pilot devices.
- Validate motor nameplate data against starter's AC motor type and current rating.
- Confirm chassis mounting dimensions and hardware thread size before panel fabrication.
- Assess whether RoHS non-compliant status aligns with destination market substance restrictions.
- Determine if overload reset (manual or automatic) is required and specify separately if not included.
- Review short-circuit protection coordination for the motor branch per NEC Article 430.
- Verify that duplex configuration supports the intended two-motor or two-direction control scheme.