Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | Soft starter |
| Size | S2 |
| Rated operational current at 40 °C | 72 A |
| Rated motor power at 500 V | 45 kW |
| Rated operating voltage | 400 … 600 V |
| Control supply voltage | 110 … 230 V AC/DC |
| Operating frequency | 50 … 60 Hz |
| Main circuit connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection | IP20 |
Key Features
- Rated motor current: Rated operational current is 72 A at 40 °C, 62 A at 50 °C, and 60 A at 60 °C.
- Motor power at 500 V: Rated motor power is 45 kW at 500 V in the standard circuit at 40 °C.
- Operating voltage: Rated operating voltage is 400 … 600 V with a relative negative tolerance of -15 % and a relative positive tolerance of 10 %.
- Control supply: The AC/DC control supply is 110 … 230 V at AC 50 Hz, AC 60 Hz, or DC.
- Protection and functions: The soft starter has integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset, and adjustable current limitation.
- Connection and mounting: Main, auxiliary, and control circuits use screw-type terminals. The S2 device has screw and snap-on mounting and measures 55 mm wide, 160 mm high, and 170 mm deep.
Frequently Asked Questions
1. What is the rated current of the Siemens 3RW4038-1BB15?
The rated operational current is 72 A at 40 °C, 62 A at 50 °C, and 60 A at 60 °C.
2. What motor power is supported at 500 V?
The rated motor power is 45 kW at 500 V in the standard circuit at 40 °C.
3. What supply voltage does the control circuit use?
The control supply is 110 … 230 V AC at 50 Hz or 60 Hz, or 110 … 230 V DC.
4. How is the soft starter connected and mounted?
The main, auxiliary, and control circuits use screw-type terminals. Mounting is by screw and snap-on mounting.
