SIRIUS 3RW4074-6BB44 Soft Starter: Advanced Motor Control Solution

Product Overview

• The 3RW4074-6BB44 belongs to Siemens' renowned SIRIUS soft starter series
• This advanced motor controller delivers smooth acceleration for industrial applications
• It features a compact S12 design with robust construction for demanding environments
• The unit provides reliable motor protection and easy installation capabilities
• With its integrated bridging contact system, it ensures efficient operation

Key Technical Specifications

• Brand: Siemens SIRIUS
• Model: 3RW4074-6BB44
• Rated Current: 280A at 40°C, 248A at 50°C, 215A at 60°C
• Motor Power: 160kW at 400V, 90kW at 230V
• Operating Voltage: 200-460V AC with ±15% tolerance
• Control Voltage: 230V AC at 50/60Hz frequency
• Frequency Range: 50-60Hz with ±10% tolerance
• Minimum Load: 20% of motor current
• Adjustable Current: 130A minimum for motor protection

Protection & Safety Features

• Integrated motor overload protection for enhanced equipment safety
• Intrinsic device protection ensures reliable operation
• Adjustable current limitation prevents motor damage
• External reset capability for convenient operation
• Thermal monitoring through internal protection systems
• Red LED fault signaling for immediate problem identification

Installation & Mounting

• Compact dimensions: 160mm width × 230mm height × 278mm depth
• Screw fixing mounting with flexible positioning options
• Clearance requirements: 100mm above, 5mm sides, 75mm below
• Suitable for installation altitudes up to 5000 meters
• Maximum cable length of 300 meters for flexible setup
• IP00 protection class for controlled environments

Electrical Connections

• Main circuit: Busbar connection for high-current applications
• Auxiliary circuits: Screw terminals for control wiring
• Contact configuration: 2 NO contacts, 1 changeover contact
• Front connection: 70-240mm² fine-stranded conductors
• Rear connection: 120-185mm² fine-stranded conductors
• Dual connection: Minimum 2×50mm², maximum 2×185mm²
• AWG compatibility: 2/0 to 500 kcmil for international standards

Environmental Specifications

• Operating temperature range: -25°C to +60°C
• Storage temperature range: -40°C to +80°C
• Derating begins at 40°C ambient temperature
• Suitable for industrial environments with proper enclosure
• Robust design ensures consistent performance

Shipping & Delivery

• Express shipping via FedEx, UPS, and DHL available
• Professional packaging ensures safe product delivery
• Global shipping coverage for international customers
• Quick dispatch from our warehouse facilities

Frequently Asked Questions

• What motor power can the 3RW4074-6BB44 handle? It controls motors up to 160kW at 400V
• What protection features does it include? Motor overload and intrinsic device protection
• What are the mounting requirements? Minimum clearances: 100mm above, 5mm sides
• What temperature range can it operate in? From -25°C to +60°C ambient temperature
• What control voltage does it require? 230V AC at either 50Hz or 60Hz frequency

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