Siemens 3RW4453-6BC44 SIRIUS Soft Starter | High Power Motor Starter 315kW

Siemens 3RW4453-6BC44 SIRIUS Soft Starter

Manufacturer: Siemens
Product No.: 3RW4453-6BC44
Product Type: SIRIUS Soft Starter
Warranty: 12 Months
Shipping: FedEx / UPS / DHL
Inquiries: sales@powergearx.com |
+86 18030005825
Author: Powergear X Automation

Product Overview

• High-performance Siemens SIRIUS soft starter for heavy-duty motors.
• Integrated bridging contacts and thyristors ensure stable operation.
• Rated power: 315 kW at 400V / Inside-Delta: 560 kW.
• Operating current: 551A (40°C), up to 954A in Inside-Delta mode.
• Voltage range: 200–460V AC, Control supply: 230V AC.
• Frequency: 50/60 Hz with ±10% tolerance.
• Adjustable current limitation and built-in overload protection.
• Compact size: 29cm × 51cm × 64cm, Weight: 67 kg.

Performance & Protection

• Supports thermal motor protection with external reset.
• Operates in high ambient temperatures up to 60°C.
• IP00 protection class for controlled cabinet installations.
• Continuous current: 115% at 40°C, loss: 159W typical.
• Rated for up to 5,000m installation altitude.

Electrical & Control Features

• Main current circuit: Busbar connection, 3 poles.
• Auxiliary control: 3 NO, 1 changeover contact.
• Control voltage: 230V AC (50/60 Hz) ±15%.
• Fine-stranded wire support: up to 240 mm² main, 2.5 mm² auxiliary.

Technical Highlights

• Soft starter for high-feature applications.
• Reduced mechanical stress and energy consumption.
• Optimized for pumps, fans, and compressors.
• Smart diagnostic display for fault monitoring.
• Stable performance in variable load environments.

Why Choose Powergear X Automation

• All items 100% new and original from Siemens.
• Fast worldwide shipping with tracking support.
• Professional technical support team.
• Strong partnership with Ubest Automation Limited.

FAQ – Expert Insights

• Q1: How do I wire the 3RW4453-6BC44 for Inside-Delta configuration?
  A1: Connect the six motor leads directly to the soft starter output terminals. Ensure the wiring matches Siemens connection diagrams for safety.
• Q2: Can I use this model in high humidity environments?
  A2: Yes, but installation in an enclosed, ventilated cabinet is recommended to prevent moisture ingress.
• Q3: What are the typical startup times for a 315 kW motor?
  A3: Startup duration can be set between 5–20 seconds depending on load inertia and torque demand.
• Q4: Is it compatible with remote monitoring systems?
  A4: Yes, it supports external reset and can integrate with PLC systems via control terminals.
• Q5: What maintenance is required?
  A5: Periodic checks of connection torque and ventilation are recommended. No routine internal servicing is needed.

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