Siemens SIRIUS 3RT2017-2JB41 Power Contactor 12A, 5.5kW, 24V DC Coil, Spring-Loaded Terminal Original Brand New

Overview 

The Siemens SIRIUS 3RT2017-2JB41 is a compact, high-performance power contactor designed for switching motors and auxiliary circuits. Part of the modular SIRIUS system, this 3-pole contactor is rated for $12\text{ A}$ (AC-3e/AC-3) and $5.5\text{ kW}$ at $400\text{ V}$. Its $24\text{ V DC}$ coil, featuring an integrated diode for transient voltage suppression, makes it an ideal choice for direct connection to modern PLC outputs. The Size $\text{S00}$ frame provides a space-saving solution, while the spring-loaded terminals ensure a fast, maintenance-free, and vibration-proof electrical connection. It includes one integrated Normally Open ($\text{1 NO}$) auxiliary contact.

Key Features and Specification

• Product Number: 3RT2017-2JB41
• Manufacturer: Siemens
• Series: SIRIUS 3RT2
• Contactor Type: Power Contactor / Coupling Contactor
• Operating Current (AC-3e/AC-3, $400\text{ V}$): $12\text{ A}$
• Rated Power (AC-3, $400\text{ V}$): $5.5\text{ kW}$
• Poles: 3-pole
• Coil Voltage: $24\text{ V DC}$ (Operating range 0.7−1.25×Uc​)
• Coil Features: Integrated Diode (Suppression of opening surge)
• Auxiliary Contacts: $1\text{ NO}$ (Normally Open) integrated
• Terminal Type: Spring-loaded terminal (Spring-type terminal)
• Frame Size: $\text{S00}$
• PLC Compatibility: Suitable for direct connection to PLC outputs
• Expandability: Not expandable with an additional auxiliary switch block.

Benefit

• Optimized for PLC: $24\text{ V DC}$ coil with integrated diode ensures seamless and safe interfacing with PLC control systems, minimizing external wiring components.
• Fast & Reliable Wiring: Spring-loaded terminals offer a secure, vibration-proof connection, drastically reducing installation time and eliminating the need for periodic re-tightening.
• Space Efficiency: Compact Size $\text{S00}$ design saves valuable panel space in industrial enclosures.
• High Performance: Provides dependable switching for motor loads up to $5.5\text{ kW}$ with high contact reliability.
• SIRIUS System Integration: Fully compatible and coordinated with the extensive Siemens SIRIUS modular system components (e.g., overload relays, circuit breakers).

Application/Function

The Siemens 3RT2017-2JB41 Contactor is primarily used for:

1. Switching $3$-phase AC motors (direct-on-line start).
2. Switching resistive loads (heating, lighting).
3. Acting as a coupling relay for interfacing control circuits to motor/power circuits.
4. Integration into load feeders, especially those controlled by $24\text{ V DC}$ automation systems (PLCs).

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