3RW4422-1BC44 SIRIUS Soft Starter 29A 15kW Siemens

SIRIUS 3RW4422-1BC44 Soft Starter – Compact Motor Control Solution

Core Technical Specifications

• Brand & Model: Siemens SIRIUS 3RW4422-1BC44 – soft starter for standard and inside-delta wiring.
• Standard circuit current: 29 A at 40 °C, 26 A at 50 °C, 23 A at 60 °C.
• Inside-delta circuit current: 50 A at 40 °C, 45 A at 50 °C, 40 A at 60 °C.
• Mechanical power at 400 V: 15 kW (standard circuit) and 22 kW (inside-delta circuit) at 40 °C.
• Operating voltage range: 200 ... 460 V AC with -15% / +10% tolerance for both wiring methods.
• Control supply voltage: 230 V AC at 50/60 Hz (-15% / +10% tolerance).
• Adjustable motor current for overload protection: Minimum 5 A up to rated current.
• Motor overload protection: Yes, plus thermistor motor protection evaluation (PTC input).
• External reset and adjustable current limitation: Both functions are available.
• Integrated bypass contact system: Lowers power loss to only 8 W at full load.
• Motor brake output: Included as a product component for DC braking control.
• Minimum load: Only 8% of rated current ensures stable operation with light loads.

Frequently Asked Questions (FAQ)

• Q: Is the 3RW4422-1BC44 a brand new original Siemens unit?
  A: Yes, we supply brand new original SIRIUS soft starters with full factory warranty.
• Q: What is the difference between standard circuit and inside-delta circuit?
  A: Standard circuit uses three wires (29A / 15kW at 400V). Inside-delta uses six wires (50A / 22kW at 400V) for higher power output.
• Q: Does this soft starter support motor PTC thermistor protection?
  A: Yes, the 3RW4422-1BC44 includes evaluation of thermistor motor protection (PTC input).
• Q: What is the typical power loss during continuous operation?
  A: At rated current and 40 °C, the power loss equals only 8 W due to the integrated bypass system.
• Q: Can I use this device for high altitude installations?
  A: Yes, rated for up to 5000 m. Above 1000 m, consider slight derating per Siemens guidelines.
• Q: Does the soft starter include a motor brake output?
  A: Yes, it provides a motor brake output for controlling an external mechanical brake.
• Q: What shipping methods do you offer?
  A: We ship via FedEx, UPS, and DHL. Delivery typically within 5 business days after order processing.
• Q: What is your return policy?
  A: We support 30 days return from delivery date for unused items in original packaging.
• Q: Do you have the 3RW4422-1BC44 in stock?
  A: Yes, we have ample stock of the SIRIUS 3RW44 22-1BC44 and other 3RW44 series soft starters.
• Q: What is the minimum adjustable motor current for overload protection?
  A: You can adjust from as low as 5 A up to the device rated current, allowing flexible motor matching.

Contact Information Inquiries: sales@nex-auto.com , +86 153 9242 9628

Partner NexAuto Technology Limited: https://www.nex-auto.com/