Overview
The Siemens 3RT2027-2AL20 is a high-performance power contactor designed for reliable motor control and switching in industrial applications. Engineered for durability and precision, this 3-pole contactor supports AC-3e/AC-3 operation up to 32 A and 15 kW at 400 V, making it ideal for a wide range of machinery and automation environments. With a 230 V AC coil (50/60 Hz) and spring-loaded terminals, installation is quick, secure, and maintenance-free. The unit also includes 1 NO + 1 NC auxiliary contacts, ensuring enhanced control flexibility.
Key Features & Benefit
High Switching Capacity
Supports 32 A and 15 kW at 400 V, suitable for demanding industrial motor control applications.
Reliable AC-3e/AC-3 Performance
Optimized for frequent switching of squirrel-cage motors and high-load operations.
Integrated Auxiliary Contacts
Comes with 1 NO + 1 NC, providing additional control options and system flexibility.
Quick & Safe Installation
Spring-loaded terminals ensure vibration-resistant, tool-friendly wiring that reduces installation time.
Compact S0 Size
Space-saving design fits easily into modern control cabinets without compromising performance.
Siemens Quality & Durability
Built to meet the highest industrial standards for long-term operation and reduced downtime.
Function
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Motor switching and control for industrial machinery
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Suitable for conveyor systems, pumps, compressors, and automated production equipment
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Integrates seamlessly into Siemens control panels and automation systems
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Provides auxiliary signaling and interlocking through NO/NC contacts
Technical Specification
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Product Type: Power Contactor
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Model: Siemens 3RT2027-2AL20
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Operational Category: AC-3e / AC-3
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Rated Operational Current: 32 A
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Rated Motor Power: 15 kW (at 400 V)
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Poles: 3-pole
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Coil Voltage: 230 V AC, 50/60 Hz
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Auxiliary Contacts: 1 NO + 1 NC
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Terminal Type: Spring-loaded terminal
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Size: S0
Application
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Motor control and starting (direct-on-line starters)
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Switching resistive loads
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Pump, fan, and compressor control systems
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Heating, ventilation, and air conditioning (HVAC) systems
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General power switching applications in industrial automation
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