Product Description
Key Features
- Soft starter identity: SIRIUS soft starter, product designation Soft starter, order number 3RW4434-6BC44.
- Standard-circuit rating: Rated operational current: 113 A at 40 °C; 100 A at 50 °C; 88 A at 60 °C. At 400 V, rated motor performance is 55 kW.
- Inside-delta rating: Rated operational current for 3-phase motors in inside-delta circuit: 196 A at 40 °C, 173 A at 50 °C, and 152 A at 60 °C. At 400 V, rated motor performance is 110 kW.
- Voltage and control supply: Operating voltage: 200 … 460 V AC in standard and inside-delta circuits. Control supply: 230 V AC at 50 Hz and 60 Hz.
- Protection and control functions: Has intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, adjustable current limitation, and an integrated bypass contact system.
- Installation and lifecycle data: Screw fixing with vertical mounting surface +/-90° rotatable and +/- 22.5° tiltable to the front and back. Product lifecycle: start of final year of support.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Rated operational current at 40 °C | 113 A |
| Rated motor performance at 400 V, standard circuit | 55 kW |
| Rated motor performance at 400 V, inside-delta circuit | 110 kW |
| Operating voltage | 200 … 460 V AC |
| Control supply voltage | 230 V AC at 50 Hz and 60 Hz |
| Main current circuit connection | Busbar connection |
| Auxiliary and control circuit connection | Screw-type terminals |
| Mounting method | Screw fixing |
| Product lifecycle | Start of final year of support |
Frequently Asked Questions
What is the exact product designation of Siemens 3RW4434-6BC44?
It is the SIRIUS 3RW4434-6BC44 soft starter.
What is the rated current at 40 °C?
The rated operational current is 113 A in the standard circuit and 196 A for 3-phase motors in the inside-delta circuit at 40 °C.
What voltage and control supply does it use?
The operating voltage is 200 … 460 V AC. The control supply is 230 V AC at 50 Hz and 60 Hz.
What connections and mounting method should be confirmed?
The main current circuit uses a busbar connection, the auxiliary and control circuit uses screw-type terminals, and the fastening method is screw fixing.
