Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | Soft starter |
| Rated operational current at 40 °C | 551 A |
| Inside-delta operational current at 40 °C | 954 A |
| Motor power at 400 V, standard circuit | 315 kW |
| Motor power at 400 V, inside-delta circuit | 560 kW |
| Operating voltage | 200 … 460 V |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main current connection | Busbar connection |
| Auxiliary and control connection | Screw-type terminals |
| Mounting | Screw fixing |
| Front protection class | IP00 |
Key Features
- Rated operational current: 551 A at 40 °C; 494 A at 50 °C; 438 A at 60 °C.
- Inside-delta current: 954 A at 40 °C, 856 A at 50 °C, and 759 A at 60 °C for 3-phase motors in inside-delta circuit.
- Motor power at 400 V: 315 kW in standard circuit and 560 kW in inside-delta circuit at 40 °C.
- 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.
- Mounting and dimensions: Screw fixing; 510 mm width, 640 mm height, and 290 mm depth. Required spacing is 100 mm upwards, 5 mm at the side, and 75 mm downwards.
Frequently Asked Questions
1. What type of device is Siemens 3RW4453-6BC44?
It is a SIRIUS soft starter with an integrated bypass contact system and thyristors.
2. What current does the 3RW4453-6BC44 support?
It has 551 A at 40 °C in standard circuit and 954 A at 40 °C for 3-phase motors in inside-delta circuit.
3. What are the operating and control voltages?
The operating voltage is 200 … 460 V in standard and inside-delta circuits. The control supply is 230 V AC at 50 Hz and 60 Hz.
4. How is the device connected and mounted?
The main current circuit uses a busbar connection, while auxiliary and control circuits use screw-type terminals. Mounting is by screw fixing.
5. Is Siemens 3RW4453-6BC44 a current product?
It is a phased-out product at the start of its final year of support. The preferred successor type is 3RW5548-6HA14.
