Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Rated operational current at 40 °C | 615 A |
| Rated motor power at 400 V, standard circuit | 355 kW |
| Rated motor power at 400 V, inside-delta circuit | 630 kW |
| Operating voltage, standard circuit | 200 … 460 V AC, -15 % / +10 % |
| Control supply | 230 V AC at 50 Hz or 60 Hz |
| Main-circuit connection | Busbar connection, 3 poles |
| Auxiliary and control connection | Screw-type terminals |
| Mounting | Screw fixing; vertical mounting surface, +/-90° rotatable and +/-22.5° tiltable |
| Front protection class | IP00 according to IEC 60529 |
| Operating ambient temperature | 60 °C |
| Product status | Phased-out product; preferred successor type 3RW5552-6HA14 |
Key Features
- Rated operational current: 615 A at 40 °C; 551 A at 50 °C and 489 A at 60 °C.
- Motor power at 400 V: 355 kW in the standard circuit and 630 kW in the inside-delta circuit at 40 °C.
- Soft-starter functions: Has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, and adjustable current limitation.
- Power and control supply: Operating voltage: 200 … 460 V AC in the standard and inside-delta circuits. Control supply: 230 V AC at 50 Hz or 60 Hz.
- Connections and mounting: Uses busbar connection for the 3-pole main circuit and screw-type terminals for auxiliary and control circuits. Fastening method: screw fixing.
- Product status: Phased-out product; start of final year of support. Preferred successor type: 3RW5552-6HA14.
Frequently Asked Questions
1. What is the rated operational current of Siemens 3RW4454-6BC44?
The rated operational current is 615 A at 40 °C, 551 A at 50 °C, and 489 A at 60 °C.
2. What motor power does 3RW4454-6BC44 support at 400 V?
At 400 V and 40 °C, it supports 355 kW in the standard circuit and 630 kW in the inside-delta circuit.
3. What supply and connections does this soft starter have?
The operating voltage is 200 … 460 V AC. The control supply is 230 V AC at 50 Hz or 60 Hz. The main circuit uses a busbar connection, while auxiliary and control circuits use screw-type terminals.
4. How is Siemens 3RW4454-6BC44 mounted?
It uses screw fixing and requires a vertical mounting surface. The mounting surface is +/-90° rotatable and +/-22.5° tiltable to the front and back.
5. Is Siemens 3RW4454-6BC44 still an active product?
It is a phased-out product at the start of its final year of support. The preferred successor type is 3RW5552-6HA14.
