Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Standard-circuit rated current at 40 °C | 162 A |
| Standard-circuit rated motor power at 400 V, 40 °C | 90 kW |
| Inside-delta rated current at 40 °C | 281 A |
| Inside-delta rated motor power at 400 V, 40 °C | 160 kW |
| Operating voltage | 200 … 460 V AC |
| Control supply | 230 V AC at 50 Hz or 60 Hz |
| Main circuit connection | Busbar connection |
| Auxiliary and control connection | Screw-type terminals |
| Mounting | Screw fixing |
| Lifecycle | Start of final year of support |
Key Features
- Product designation: SIRIUS soft starter with integrated bypass contact system and thyristors.
- Standard-circuit rating: Rated current: 162 A at 40 °C; rated motor power: 90 kW at 400 V, 40 °C.
- Inside-delta rating: Rated current: 281 A at 40 °C; rated motor power: 160 kW at 400 V, 40 °C.
- Supply and connections: Operating voltage: 200 … 460 V AC; control supply: 230 V AC at 50 Hz or 60 Hz; main circuit: busbar connection; auxiliary and control circuit: screw-type terminals.
- Protection and functions: Has intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, adjustable current limitation, and a motor brake output.
- Installation and protection class: Dimensions: 170 mm width, 200 mm height, 270 mm depth; screw fixing; front protection class: IP00, or IP20 with box terminal/cover.
Frequently Asked Questions
What product does Siemens 3RW4436-6BC44 identify?
It identifies a SIRIUS soft starter.
Which ratings distinguish this 3RW4436-6BC44 variant?
At 40 °C in standard circuit, it has a rated current of 162 A and supports 90 kW at 400 V. In inside-delta circuit, the ratings are 281 A and 160 kW at 400 V.
What connections should be checked for this exact code?
The main current circuit uses a busbar connection, while the auxiliary and control circuit uses screw-type terminals.
