Overview
The Siemens 3RT2017-1QB42 is a high-performance power contactor designed for reliable switching in AC-3e/AC-3 applications. With a rated current of 12 A and a power capacity of 5.5 kW at 400 V, this 3-pole contactor ensures efficient and safe operation in industrial electrical systems. Equipped with a 24 V DC coil (0.7–1.25*Uc) and an integrated varistor, it offers enhanced protection against voltage spikes. The screw terminal connection and a single NC auxiliary contact simplify installation while maintaining optimal safety. Its S00 frame size provides a compact yet robust solution, although no additional auxiliary switches can be added.
Key Features & Function
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Rated Current: 12 A
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Rated Power: 5.5 kW / 400 V AC
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Poles: 3-pole contactor
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Coil Voltage: 24 V DC (0.7–1.25*Uc)
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Auxiliary Contacts: 1 NC
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Terminal Type: Screw terminals for secure connections
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Frame Size: S00
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Protection Feature: Varistor plugged in to prevent voltage spikes
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Mounting: Easy installation, compact design
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Limitations: No additional auxiliary switch can be added
Benefit
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Reliable Performance: Handles demanding AC-3 and AC-3e applications with stable switching.
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Enhanced Protection: Integrated varistor safeguards your system from voltage spikes.
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Compact Design: S00 frame size allows for installation in tight electrical panels.
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Easy Installation: Screw terminals ensure secure and fast wiring.
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Industrial Compatibility: Ideal for motor control, automation, and industrial machinery.
Application
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Industrial motor control
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Automation systems
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Electrical panels and switchgear
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Machinery requiring 3-pole AC-3 switching
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Systems needing compact, reliable DC-controlled contactors
For more information on the Siemens 3RT2017-1QB42 and our comprehensive range of industrial automation products, visit Turll today!













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