Siemens SIRIUS 3RW4427-1BC34 Soft Starter
Siemens SIRIUS 3RW4427-1BC34 soft starter, 82A/60hp (460V), phased out.
The Siemens 3RW4427-1BC34 is a SIRIUS soft starter designed for smooth motor acceleration. Its standard ratings at 460V, 50°C are 82A and 60 hp. For inside-delta wiring, it handles 142A and 100 hp. The operating voltage range is 200-460V AC, with screw terminals for connections. This product is phased out, with the preferred successor being the SIRIUS 3RW5527-1HA14.
Soft starters are crucial for reducing mechanical stress on equipment and power system inrush current during motor startup. This Siemens soft starter is suitable for a variety of industrial applications, including pumps, fans, compressors, and conveyors, where controlled acceleration is needed to protect machinery and the power grid.
Stanlo Automation, a veteran-owned distributor of surplus industrial parts, offers the Siemens 3RW4427-1BC34. While this is a phased-out product, Stanlo can help you source this or find suitable replacements to keep your operations running efficiently. Contact us for your automation component needs.
| Rated Current (Standard) | 82 A (at 460 V, 50°C) |
| Rated Power (Standard) | 60 hp (at 460 V) |
| Rated Current (Inside-Delta) | 142 A (at 460 V) |
| Rated Power (Inside-Delta) | 100 hp (at 460 V) |
| Voltage Range | 200-460 V AC |
| Terminals | Screw |