Siemens 3RT2017-1WB42 Power Contactor 12A, 24V DC, S00 Original Brand New

Overview: Siemens SIRIUS 3RT2017-1WB42 Power Contactor

The Siemens 3RT2017-1WB42 is a compact, high-performance power contactor from the globally recognized SIRIUS 3RT2 range, designed for switching three-phase loads, particularly motors. This 3-pole contactor is rated for $12\text{ A}$ (AC-3e/AC-3) and $5.5\text{ kW}$ at $400\text{ V}$, making it an ideal component for industrial control panels and motor starting applications.

Its compact frame size S00 allows for efficient space utilization, while the use of a $24\text{ V DC}$ control voltage with a wide operating range (0.85−1.85⋅Uc​) ensures reliability and flexibility in various control circuits. The integrated varistor provides crucial surge suppression for the coil, enhancing system stability and longevity.

Technical Specification

• Type: Power Contactor (Motor Switching)
• Performance Rating (AC-3e/AC-3): $12\text{ A}$
• Power Rating: $5.5\text{ kW}$ at $400\text{ V}$
• Poles: 3-pole main circuit
• Control Voltage (Uc​): $24\text{ V DC}$ (Wide range 0.85−1.85⋅Uc​)
• Coil Protection: Integrated varistor for surge suppression
• Auxiliary Contacts: 1 Normally Closed (1 NC)
• Terminals: Secure screw terminals for main and auxiliary circuits
• Frame Size: S00
• Expansion: No auxiliary switch can be added (fixed configuration)

Benefit & Advantages

1. High Reliability: Part of the trusted Siemens SIRIUS family, built for durable, long-term operation in demanding industrial environments.
2. Space Efficiency: The compact S00 frame size minimizes the required mounting space in control cabinets.
3. Enhanced Surge Protection: The factory-integrated varistor protects the $24\text{ V DC}$ coil and the overall control system from damaging voltage spikes, reducing maintenance and downtime.
4. Simplified Wiring: Features robust screw terminals for easy and secure connection of both power and control wiring.
5. Wide Voltage Tolerance: The extended operating range of 0.85−1.85⋅Uc​ for the $24\text{ V DC}$ coil ensures reliable pickup and holding, even with fluctuating power supplies.

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