Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Rated current at 40 °C | 38 A |
| Rated motor power at 400 V | 18.5 kW |
| Operating voltage | 200 … 480 V |
| Control supply voltage | 110 … 230 V AC/DC |
| Operating frequency | 50 … 60 Hz |
| Main circuit connection | Screw-type terminals |
| Auxiliary and control circuit connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection | IP20 |
| Insulation voltage rated value | 600 V |
| Product size | S0 |
Applications
- Motor overload protection: Provides motor overload protection with an adjustable motor current minimum rated value of 23 A.
- Current limitation: Supports adjustable current limitation.
- External reset: Supports external reset.
Key Features
- Rated current: 38 A at 40 °C, 34 A at 50 °C, and 31 A at 60 °C.
- Motor power: 18.5 kW at 400 V and 11 kW at 230 V in the standard circuit at 40 °C rated value.
- Operating voltage and frequency: 200 … 480 V operating voltage and 50 … 60 Hz rated operating frequency.
- Protection and control functions: Has intrinsic device protection, motor overload protection, external reset, and adjustable current limitation.
- Control supply: AC/DC control supply with 110 … 230 V at AC and 110 … 230 V at DC.
- Connection and mounting: Uses screw-type terminals for the main, auxiliary, and control circuits; supports screw and snap-on mounting.
Frequently Asked Questions
1. What is the rated current of the Siemens 3RW4028-1BB14?
The rated current is 38 A at 40 °C, 34 A at 50 °C, and 31 A at 60 °C.
2. What motor power is supported at 400 V?
The motor power is 18.5 kW at 400 V in the standard circuit at the 40 °C rated value.
3. What supply does the control circuit use?
The control supply is AC/DC, with 110 … 230 V at AC and 110 … 230 V at DC.
4. What terminals and mounting methods does it have?
It has screw-type terminals for the main, auxiliary, and control circuits, with screw and snap-on mounting.
