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The Siemens 3RW4046-2BB14 SIRIUS Soft Starter is part of the reliable SIRIUS 3RW40 series, engineered to provide smooth motor starting and stopping for three-phase induction motors. It minimizes mechanical and electrical stress, extending the lifespan of both the motor and connected mechanical components.
With a rated operational current of 80 A and motor power up to 45 kW at 400 V, this Size S3 soft starter supports 200–480 V AC operating voltage and uses a 110–230 V AC/DC control supply. Its integrated bypass reduces power loss and heat generation, while spring-loaded terminals ensure fast, secure, and vibration-resistant connections.
The unit features two-phase control and built-in overload protection, making it a safe and efficient solution for pumps, fans, compressors, conveyors, and other motor-driven industrial equipment.
| Specification | Details |
|---|---|
| Range of Product | SIRIUS 3RW40 Soft Starters |
| Product or Component Type | Soft Starter |
| Device Short Name | 3RW4046-2BB14 |
| Applications | Smooth starting and stopping of three-phase induction motors (pumps, fans, compressors, conveyors, etc.) |
| Utilization Category | AC-53a (typical for motor starting) |
| [Ue] Rated Operational Voltage | 200–480 V AC |
| [Ie] Rated Operational Current | 80 A |
| Rated Motor Power (at 400 V) | 45 kW |
| Control Supply Voltage | 110–230 V AC/DC |
| Mounting Type | Spring-loaded terminals |
| Motor Protection | Integrated overload protection |
| Bypass | Integrated bypass contact system |
| Size | S3 |
| Dimensions (L x W x H) | 181 × 90 × 218 mm |
| Net Weight | 1.842 kg |
| Ambient Temperature (Operation) | Up to 40 °C |
| Product Lifecycle | Active Product |
| Product Class | A: Standard product (stock item, returnable within guidelines) |