Siemens 3RW4422-1BC44 SIRIUS Soft Starter | 22 kW 29A 400V

Siemens 3RW4422-1BC44 SIRIUS Soft Starter Overview

The 3RW4422-1BC44 from Siemens is part of the trusted SIRIUS series. It provides controlled motor starts, advanced protection, and simple setup. This soft starter supports both standard and inside-delta circuits for maximum flexibility. Author: Powergear X Automation

Core Highlights

• Power Output: 15 kW at 400 V (standard) or 22 kW (inside-delta).
• Current Rating: 29 A standard, 50 A inside-delta at 40 °C.
• Voltage Range: 200 – 460 V AC main, 230 V AC control supply.
• Frequency: 50 – 60 Hz with ±10 % tolerance.
• Protection: Built-in overload, intrinsic protection, and motor thermistor evaluation.

Key Technical Data

• Operating current: 29 A @ 40 °C | 26 A @ 50 °C | 23 A @ 60 °C.
• Inside-delta current: 50 A @ 40 °C | 45 A @ 50 °C | 40 A @ 60 °C.
• Motor rating (UL/CSA): 7.5 hp @ 230 V | 15 hp @ 460 V (standard) | 30 hp @ 460 V (inside-delta).
• Power loss: 8 W typical at rated current.
• Control voltage tolerance: ±15 % (230 V AC 50/60 Hz).
• Ambient temperature: up to 60 °C operation; storage −25 °C to +80 °C.
• Protection class: IP00 | Installation altitude: ≤ 5000 m.
• Dimensions: 170 mm W × 192 mm H × 270 mm D | Mount: Screw-fixing.
• Auxiliary contacts: 3 NO + 1 CO | Display: LED fault indicator.
• Wiring length: Up to 500 m | Conductor size: 2.5 – 70 mm² (stranded).

Product Functions

• Integrated thyristors and bypass system reduce energy loss.
• Adjustable start current limits motor stress and wear.
• Supports inside-delta configuration for compact control cabinets.
• Motor brake output enhances stop performance for high-inertia loads.
• External reset and advanced diagnostic display for maintenance ease.

Mechanical & Environmental Design

• Mount vertically or rotate ± 90° for flexible layout.
• Maintain 5 mm side, 100 mm top, 75 mm bottom clearance for cooling.
• Category per IEC 60721: 3K6 / 3C3 / 3S2 / 3M6 (no condensation or salt mist).
• Durable for transport and operation with vibration and dust resistance.

Application Benefits

• Ensures smooth motor acceleration, protecting belts and gears.
• Prevents current surges that may trip circuit protection devices.
• Compact design saves space in control panels.
• Fully compatible with global voltage and frequency standards.
• Reduces mechanical wear, improving motor service life.

Warranty & Shipping

• Warranty: 12 months against manufacturing defects.
• Packaging includes: main unit, installation manual, and mounting hardware.
• Ships worldwide via FedEx, UPS, and DHL with tracking.

FAQ

• Q: Can the 3RW4422-1BC44 operate at high altitudes?
  A: Yes, up to 5000 m, with appropriate derating above 40 °C.
• Q: What is the main difference between standard and inside-delta use?
  A: Inside-delta connection allows smaller physical size for the same power range.
• Q: How can I monitor a fault condition?
  A: The integrated LED display indicates fault states for quick diagnostics.
• Q: Can I use this starter with automatic reset?
  A: It supports external reset connections for automated systems.
• Q: Which environment is ideal for installation?
  A: Dry, clean control panels with ambient temperatures under 60 °C.

Contact Information

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825

Original Source: https://www.powergearx.com/

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