# Siemens SIRIUS 3RW4028-1TB04 Soft Starter S0 38A 18.5KW 400V AC 200-480V

Ensure smooth motor starts with the Siemens SIRIUS 3RW4028-1TB04 Soft Starter a robust solution for industrial automation. This Size S0 soft starter rated at 38A and 18.5kW 400V provides essential motor control. It minimizes inrush current reducing stress on electrical systems and mechanical components for enhanced equipment longevity. The Siemens SIRIUS 3RW4028-1TB04 is engineered for reliability in demanding applications.

Designed for flexible integration the Siemens SIRIUS 3RW4028-1TB04 features a wide control voltage of 200-480V AC. It offers advanced motor protection and stable performance essential for modern control systems. Operators seeking efficient and dependable motor starting will find this component indispensable for their industrial automation needs. Is this soft starter suitable for high torque applications Yes it delivers controlled acceleration.

-   Smooth motor starting and stopping with **SIRIUS 3RW4028-1TB04**
-   Handles **38A** current and **18.5kW** 400V motors effectively
-   Wide **200-480V AC** control voltage for versatile installation
-   Reduces starting current and enhances power system stability
-   Durable **Siemens** quality for industrial automation

Invest in the reliability and performance of the Siemens SIRIUS 3RW4028-1TB04. Its advanced features and robust construction make it an ideal choice for protecting your valuable motor assets and ensuring operational efficiency in any industrial setting. Experience superior motor control today.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Motor Control > Soft Starters
- **Tags:** 18.5kW motor starter, 38A soft starter, 3RW4028-1TB04, industrial automation, motor control, Siemens SIRIUS 3RW4028-1TB04, Siemens soft starter, SIRIUS 3RW40

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 999.00 USD | In stock |

## Images

- Siemens SIRIUS SOFT STARTER, S0, 38A, 18.5KW/400V, 40 DEGR., AC 200- 3RW4028-1TB04

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-sirius-3rw4028-1tb04-soft-starter)
> Updated: 2026-09-01