Product details
Siemens 3RW4447-6BC44 SIRIUS Soft Starter Overview
The Siemens 3RW4447-6BC44 SIRIUS Soft Starter delivers smooth motor starting with adjustable protection and advanced control. Rated for 432A at 400V (250kW standard) and 748A inside-delta (400kW), this model ensures stable and efficient motor performance in industrial systems.
Main Highlights
- Phased-out model — preferred successor: 3RW5547-6HA14
- Supports voltage range: 200–460V AC
- Control voltage: 230V AC
- Integrated bridging contact system and thyristor design
- Motor overload and thermal protection
- External reset and current limitation options
- Compatible with inside-delta circuit configurations
- Integrated outlet for engine brake
- Operating frequency: 50–60Hz
- Altitude rating: up to 5000 m
Technical Specifications
- Rated Current: 432A (standard) / 748A (inside-delta)
- Rated Power: 250kW (400V standard) / 400kW (400V inside-delta)
- Operating Temperature: up to 60°C
- Control Supply Voltage: 230V AC ±10%
- Power Loss: 232W typical
- Protection Class: IP00
- Mounting: Screw fixing, vertical ±90°
- Net Weight: 11.53 kg
- Dimensions (W×H×D): 210 × 230 × 298 mm
- Connection: Screw terminals for control, busbar for main current
- Cable Cross-section: 70–300 mm² stranded
Performance & Motor Ratings
- At 230V: 132kW (standard) / 250kW (inside-delta)
- At 400V: 250kW (standard) / 400kW (inside-delta)
- At 460V: up to 600HP (inside-delta)
- Continuous current: 115% of Ie at 40°C
- Minimum load: 8% of IM
- Active power loss: 232W at rated load
Advantages
- Reduces motor stress and mechanical wear
- Compact design saves panel space
- Smart protection extends motor life
- Flexible connection for various cable sizes
- Compliant with UL and RoHS standards
- 12-month warranty by Powergear X Automation
- Fast global delivery via FedEx, UPS, DHL
Contact Information
For inquiries or bulk orders, contact us:
- Email: sales@powergearx.com
- WhatsApp: +86 18030005825
Frequently Asked Questions (FAQ)
- Q1: What is the successor of Siemens 3RW4447-6BC44?
- A1: The preferred replacement is 3RW5547-6HA14 from the SIRIUS 3RW5 series.
- Q2: Can this soft starter operate at high temperatures?
- A2: Yes, it supports up to 60°C during continuous operation.
- Q3: Does it support both standard and inside-delta circuits?
- A3: Yes, the model is designed for both configurations for flexible motor control.
- Q4: What type of terminals are used for connections?
- A4: It includes screw-type terminals for control and busbar connections for main current circuits.
- Q5: How long is the warranty for this product?
- A5: Powergear X Automation provides a 12-month warranty for all Siemens soft starters.
Copyright © 2025 Powergear X Automation Limited. All rights reserved.
Original Source: https://www.powergearx.com/
Partner: Ubest Automation Limited
There are no reviews yet.