Key Features
- Soft starter designation: SIRIUS soft starter for exact model identification and procurement verification.
- Integrated bypass contact system: Integrated bypass contact system: Yes.
- Motor protection functions: Motor overload protection, evaluation of thermistor motor protection, and intrinsic device protection.
- Electrical ratings: Operating voltage at standard circuit rated value: 200 … 460 V. Control supply voltage 1 at AC: 230 V.
- Connection and mounting: Busbar connection for the main current circuit, screw-type terminals for the auxiliary and control circuit, and screw fixing.
- Physical data: Width: 510 mm. Height: 640 mm. Depth: 290 mm.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
| Inside-delta circuit | Yes |
| Operational current at 40 °C rated value | 693 A |
| Operational current for 3-phase motors at inside-delta circuit at 40 °C rated value | 1 200 A |
| Operating voltage at standard circuit rated value | 200 … 460 V |
| Control supply voltage 1 at AC | 230 V |
| Type of electrical connection for main current circuit | busbar connection |
| Type of electrical connection for auxiliary and control circuit | screw-type terminals |
Applications
- Inside-delta motor starting: Soft starting for a 3-phase motor in an inside-delta circuit.
- Motor overload protection: Protection task for a motor using the built-in motor overload protection and thermistor motor protection evaluation.
Frequently Asked Questions
What is Siemens 3RW4455-6BC44?
It is a SIRIUS soft starter.
What is the operating voltage range of 3RW4455-6BC44?
Operating voltage at standard circuit rated value: 200 … 460 V.
What control supply voltage does 3RW4455-6BC44 use?
Control supply voltage 1 at AC: 230 V.
How is the main current circuit connected on 3RW4455-6BC44?
Type of electrical connection for main current circuit: busbar connection.
