Overview
The Siemens 3RT2017-2KB42-1AA0 power contactor is a high-performance switching device designed for reliable motor control and industrial automation applications. Engineered to operate with AC-3e/AC-3 loads, this contactor supports up to 12 A and 5.5 kW at 400 V, making it ideal for high-demand environments. Featuring a 24 V DC control voltage, an integrated suppressor diode, and spring-loaded terminals, it ensures efficient, safe, and maintenance-friendly operation.
With 1 built-in NC auxiliary contact, a compact S00 frame size, and compatibility with PLC outputs, this Siemens contactor delivers optimal performance in modern automation systems. Additionally, its upright installation capability and robust construction make it a dependable choice for long-term industrial use.
Benefit
- Reliable Motor Control — Designed for AC-3e/AC-3 applications up to 5.5 kW at 400 V.
- Efficient Switching Performance — 24 V DC control voltage with integrated suppressor diode protects electronic circuits.
- Compact & Space-Saving — S00 frame size fits easily into control panels and automation cabinets.
- Optimized for PLC Systems — Fully compatible with PLC outputs, enabling seamless integration.
- Enhanced Safety — Includes 1 NC auxiliary contact for monitoring and interlocking safety functions.
- Low Maintenance — Spring-loaded terminals ensure secure, vibration-resistant wiring.
Features & Function
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Product Type: Power Contactor
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Model Number: Siemens 3RT2017-2KB42-1AA0
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Utilization Category: AC-3e / AC-3
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Rated Operational Current: 12 A
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Power Rating: 5.5 kW @ 400 V
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Poles: 3-pole
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Control Voltage: 24 V DC (0.7–1.25 × Uc)
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Integrated Suppressor Diode: Reduces voltage spikes and protects electronics
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Auxiliary Contacts: 1 NC (non-expandable)
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Terminal Type: Spring-loaded terminals
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Frame Size: S00
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Mounting Position: Upright
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Compatibility: Suitable for PLC outputs
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Application Areas: Motor starters, automation systems, industrial machinery, control cabinets
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