Product Description
Key Features
- Rated operational current: 693 A at 40 °C, 615 A at 50 °C, and 551 A at 60 °C.
- Motor power at 400 V: 400 kW in standard circuit and 710 kW in inside-delta circuit at 40 °C rated value.
- Protection and control functions: Has intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, and adjustable current limitation.
- Electrical connections: Uses busbar connection for the main current circuit and screw-type terminals for auxiliary and control circuits.
- Installation and enclosure data: 510 mm wide, 640 mm high, 290 mm deep; screw fixing; front protection class IP00 according to IEC 60529.
- Lifecycle status: Phased-out product; product lifecycle is at the start of the final year of support.
Applications
- Motor starting: Provides soft starting for 3-phase motors through standard and inside-delta circuits.
- Motor overload protection: Provides motor overload protection and evaluation of thermistor motor protection.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Rated operational current at 40 °C | 693 A |
| Rated motor power at 400 V, standard circuit | 400 kW |
| Rated motor power at 400 V, inside-delta circuit | 710 kW |
| Operating voltage | 200 … 460 V |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main current circuit connection | Busbar connection |
| Lifecycle | Start of final year of support |
Frequently Asked Questions
What rated current does Siemens 3RW4455-6BC44 provide?
It provides 693 A at 40 °C, 615 A at 50 °C, and 551 A at 60 °C.
What motor power is supported at 400 V?
The rated motor power is 400 kW in standard circuit and 710 kW in inside-delta circuit at 40 °C.
What connections does this soft starter use?
It uses a busbar connection for the main current circuit and screw-type terminals for auxiliary and control circuits.
What control supply is required?
The control supply is 230 V AC at 50 Hz or 60 Hz.
What lifecycle information should be confirmed for this exact model?
The product is phased out and is at the start of its final year of support. Confirm the requested quantity, destination, condition preference, and required date for a legacy-part verification inquiry.
