Product Description
Key Features
- Exact SIRIUS S2 configuration: Product designation: Soft starter. Size of engine control device: S2. Product lifecycle: Active Product.
- Rated current and motor power: Rated operational current: 72 A at 40 °C. Standard-circuit motor power: 37 kW at 400 V and 45 kW at 500 V, both at 40 °C.
- Supply ratings: Operating voltage: 400 … 600 V at standard circuit. Control supply: AC/DC, 110 … 230 V at AC 50 Hz, AC 60 Hz, and DC.
- Integrated functions: The unit has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset, and adjustable current limitation.
- Terminals and mounting: Main, auxiliary, and control circuits use screw-type terminals. Fastening method: screw and snap-on mounting. Dimensions: 55 mm width, 160 mm height, and 170 mm depth.
- Front protection and connections: Front protection class: IP20 according to IEC 60529. The front is finger-safe for vertical contact from the front. The unit has 2 NO and 1 CO auxiliary contacts.
Technical Summary
| Product | Siemens 3RW4038-1BB15 SIRIUS S2 soft starter |
|---|---|
| Product lifecycle | Active Product |
| Rated operational current at 40 °C | 72 A |
| Standard-circuit motor power at 500 V and 40 °C | 45 kW |
| Operating voltage at standard circuit | 400 … 600 V |
| Control supply | 110 … 230 V AC/DC |
| Main circuit connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection | IP20 according to IEC 60529 |
| Auxiliary contacts | 2 NO, 1 CO |
Frequently Asked Questions
What exact Siemens model should be confirmed for this soft starter?
Confirm Siemens 3RW4038-1BB15, SIRIUS S2, product designation Soft starter, and product lifecycle Active Product.
What current and motor power ratings should be checked?
The rated operational current is 72 A at 40 °C. Standard-circuit motor power is 37 kW at 400 V and 45 kW at 500 V, both at 40 °C.
What supply values should be confirmed?
Confirm 400 … 600 V operating voltage at standard circuit and 110 … 230 V AC/DC control supply.
How is the unit mounted and connected?
It uses screw and snap-on mounting. Main, auxiliary, and control circuits use screw-type terminals.
