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The Siemens 3RW4046-2BB15 SIRIUS Soft Starter is part of the trusted SIRIUS 3RW40 series, designed for efficient and reliable starting and stopping of three-phase induction motors. This soft starter enables smooth motor acceleration and deceleration, reducing mechanical and electrical stress while extending the life of motors and connected systems.
With a rated operational current of 80 A and a motor power rating of 55 kW at 400 V, the 3RW4046-2BB15 operates within a 400–600 V AC range and uses a 110–230 V AC/DC control voltage. It features spring-loaded terminals for quick, vibration-resistant wiring, and an integrated bypass to reduce power losses during steady-state operation.
The 3RW40 soft starter also includes built-in overload protection and two-phase control, ensuring safe and efficient performance. Compact and robust, this Size S3 model is ideal for use in applications such as pumps, fans, compressors, and conveyors, where controlled motor starting and stopping are critical.
| Specification | Details |
|---|---|
| Range of Product | SIRIUS 3RW40 Soft Starters |
| Product or Component Type | Soft Starter |
| Device Short Name | 3RW4046-2BB15 |
| 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 | 400–600 V AC |
| [Ie] Rated Operational Current | 80 A |
| Rated Motor Power (at 400 V) | 55 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) | 220 × 180 × 85 mm |
| Net Weight | 1.840 kg |
| Ambient Temperature (Operation) | Up to 40 °C |
| Product Lifecycle | Active Product |
| Product Class | C: Made-to-order product (non-returnable) |