Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Size | S2 |
| Rated operational current at 40 °C | 72 A |
| Rated motor power at 400 V and 40 °C | 37 kW |
| Rated operating voltage | 200 … 480 V |
| Control supply voltage | 110 … 230 V AC/DC |
| Main current connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection class | IP20 |
| Operating ambient temperature | -25 … +60 °C |
| Product lifecycle | Active Product |
Key Features
- Product designation: SIRIUS soft starter, size S2, with integrated bypass contact system and thyristors.
- Operational current: Rated operational current: 72 A at 40 °C, 62 A at 50 °C, and 60 A at 60 °C.
- Motor rating: Standard-circuit rated value: 37 kW at 400 V and 40 °C; 22 kW at 230 V and 40 °C.
- Operating voltage: Rated operating voltage: 200 … 480 V at standard circuit, with -15 % relative negative tolerance and 10 % relative positive tolerance.
- Control supply: AC/DC control supply: 110 … 230 V at AC and 110 … 230 V at DC.
- Connections and mounting: Screw-type terminals for main, auxiliary, and control circuits; screw and snap-on mounting; front protection class IP20.
Frequently Asked Questions
What does Siemens 3RW4038-1BB14 identify?
It identifies a SIRIUS S2 soft starter with a 72 A rated operational current and 37 kW/400 V rated motor power at 40 °C.
Which specifications distinguish this exact MLFB?
Check the S2 size, 200 … 480 V operating voltage, 110 … 230 V AC/DC control supply, and screw-type terminals.
What connection type does 3RW4038-1BB14 have?
It has screw-type terminals for the main current circuit and for auxiliary and control circuits.
What code and nameplate details should be checked before quotation?
Check the complete order number 3RW4038-1BB14, the SIRIUS designation, rated current, voltage range, and terminal type.
