Product details
Siemens SIRIUS 3RW4424-1BC44 Soft Starter Overview
The Siemens SIRIUS 3RW4424-1BC44 starts motors smoothly and reduces current stress. It fits compact panels and supports standard and inside-delta wiring. Author: Powergear X Automation.
Performance Highlights
- Standard mode: 47 A and 22 kW @ 400 V
- Inside-delta: 81 A and 45 kW @ 400 V
- Operating voltage: 200–460 V AC
- Control voltage: 230 V AC
- Power loss: only 32 W
- Min. motor load: 8% of rated current
Protection & Functions
- Motor overload protection and current limit
- Built-in bridging contact and thyristors
- Supports PTC thermal sensor evaluation
- External Reset and engine brake output
Installation Details
- Wiring terminals accept solid and stranded cable up to 70 mm²
- Max cable length: 500 m
- Mounting clearance: top 100 mm / bottom 75 mm / side 5 mm
- Installation altitude: up to 5000 m
Mechanical Size
- Width: 170 mm
- Height: 192 mm
- Depth: 270 mm
Connection & Terminals
- Main circuit: box terminals
- Aux terminals: 3 NO + 1 changeover
- Wire range: 2.5–70 mm²
- Terminal rating per UL: B300 / R300
Package Contents
- Siemens SIRIUS 3RW4424-1BC44 soft starter
- Mounting screws and quick wiring sheet
- Shipment: FedEx / UPS / DHL
- Warranty: 12 months
FAQ
- Q: Can I switch from standard to inside-delta after wiring?
- A: Change wiring layout and update settings before power up.
- Q: How do I choose between standard and inside-delta?
- A: Use inside-delta when you need higher current support in the same frame size.
- Q: Does this starter need ventilation?
- A: Keep free space and airflow around the unit, especially above and below.
- Q: How do I protect the motor during startup?
- A: Use overload protection and limit current to suit the load.
- Q: Can it handle reverse rotation requests?
- A: Yes, use an external reversing contactor.
Contact Information
- Email: sales@powergearx.com
- WhatsApp: +86 18030005825
- Original Source: https://www.powergearx.com/
- Partner: Ubest Automation Limited
- Copyright © 2025 Powergear X Automation Limited. All rights reserved.
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