Siemens 3RT6017-1AN21 SIRIUS 3RT60 High Performance Contactor 220VAC 12A 3NO
The Siemens 3RT6017-1AN21 SIRIUS 3RT60 High Performance Contactor is a robust and reliable component designed for demanding industrial applications. This 220VAC contactor, rated for 12A with 3 normally open (NO) poles, offers superior performance, enhanced safety, and seamless integration into modern electrical systems. Its compact design, advanced switching technology, and long operational life make it a compelling choice for control panel builders, system integrators, and maintenance engineers seeking a dependable solution for motor control and switching tasks.
Product Specifications
| Feature | Specification |
| :----------------------- | :------------------------------------------- |
| Product Type | Contactor |
| Series | SIRIUS 3RT60 |
| Manufacturer | Siemens |
| Model Number | 3RT6017-1AN21 |
| Coil Voltage (AC) | 220 VAC |
| Rated Operational Current | 12 A |
| Number of NO Poles | 3 |
| Number of NC Poles | 0 |
| Auxiliary Contacts | None (as per -1AN21 suffix) |
| Mounting Type | DIN rail or screw mounting |
| IP Protection Rating | IP20 |
| Ambient Temperature | -25 to +60 °C |
| Standards | IEC 60947-4-1, IEC 60947-5-1, UL, CSA |
Core Features & Market Positioning
The Siemens 3RT6017-1AN21 stands out in the industrial control market due to its "High Performance" designation, signifying advanced engineering and superior reliability compared to standard contactors. Its key advantage lies in its robust construction and precisely engineered contact system, ensuring consistent and reliable operation even under frequent switching cycles and challenging environmental conditions. The SIRIUS 3RT60 line is known for its compact footprint, which is crucial for space-constrained control cabinets, allowing for higher control panel density without compromising on performance or safety. This makes it a preferred component for original equipment manufacturers (OEMs) and system integrators looking for a balance of efficiency, durability, and cost-effectiveness in their designs.
Key Application Scenarios
This 12A, 3NO Siemens 3RT6017-1AN21 contactor is ideally suited for a wide array of industrial applications, primarily for switching three-phase AC motors. Common uses include direct-on-line (DOL) motor starting in pump systems, fan control in HVAC installations, and conveyor belt operations within manufacturing and logistics. Its 220VAC coil voltage makes it compatible with standard control power circuits commonly found in industrial settings globally. Beyond motor control, it can also be employed for switching other inductive or resistive loads that fall within its operational parameters, such as lighting banks or heating elements, provided the load type and duty cycle are appropriately matched.
Practical System Integration Guidance
Integrating the Siemens 3RT6017-1AN21 into a control system is straightforward, benefiting from its standard DIN rail mounting capabilities or optional screw mounting for flexible installation. Wiring connections are made via screw terminals, ensuring a secure and reliable electrical connection for both the power circuit and the coil control. When controlling a three-phase motor, the three NO poles are connected in series with the motor windings, typically between the power source and the motor. The 220VAC coil is energized through a control circuit that includes appropriate protective devices like fuses or circuit breakers and can be controlled by relays, PLCs, or manual switches. Proper grounding of the contactor and associated enclosures is essential for safety.
Operation and Risk Mitigation
Operating the Siemens 3RT6017-1AN21 involves energizing its 220VAC coil to close the main power contacts, thereby completing the circuit for the connected load, typically a motor. De-energizing the coil causes the contacts to open, interrupting the power flow. Risk mitigation is paramount; ensure that the contactor's rating (12A, 220VAC) is not exceeded to prevent overheating and potential failure. Always implement appropriate overcurrent protection, such as fuses or circuit breakers, upstream of the contactor to safeguard against short circuits and overloads. For motor applications, ensure that the motor itself has adequate thermal overload protection integrated into the control circuit. Regular inspection of contacts for wear and checking terminal tightness can prevent operational issues and enhance safety.
Scalability & Long-Term Value
The SIRIUS 3RT60 contactors, including the 3RT6017-1AN21, are designed with scalability and long-term value in mind, fitting seamlessly into Siemens' broader SIRIUS modular system. This modularity allows for easy expansion or modification of control panels by adding or replacing components without extensive rewiring. Compatibility with other SIRIUS devices, such as overload relays and circuit breakers, ensures a cohesive and integrated control solution. For future-proofing, these contactors support integration into digitalized environments, with many SIRIUS components enabling connectivity for condition monitoring and predictive maintenance through IIoT platforms when combined with appropriate communication modules. This enhances operational efficiency and reduces downtime over the product's extensive lifespan.
Frequently Asked Questions
What is the maximum current rating for the Siemens 3RT6017-1AN21?
The Siemens 3RT6017-1AN21 SIRIUS 3RT60 contactor is rated for a maximum operational current of 12 Amperes. This rating is crucial for ensuring the device's longevity and preventing overheating when switching loads.
Exceeding this 12A limit can lead to premature wear of the contacts and potentially cause the contactor to fail. Always verify that the connected load's current draw remains within this specified boundary for safe and reliable operation.
When selecting a contactor, it's important to consider not just the continuous current but also the inrush current of the load, especially for motor applications. The 3RT6017-1AN21 is designed to handle typical motor inrush currents within its operational class.
What type of loads can the 3RT6017-1AN21 control?
This Siemens contactor is primarily designed for switching three-phase AC motors, offering reliable motor control solutions. Its three normally open (NO) poles are perfectly suited for breaking and making the power supply to motor windings.
Beyond motor control, the 3RT6017-1AN21 can also be used to switch other types of industrial loads, such as resistive heating elements or lighting systems. However, it's essential to ensure the load's voltage and current requirements match the contactor's specifications.
For inductive loads other than motors, such as transformers or solenoid valves, it is advisable to consult the product's technical documentation or Siemens support. This ensures that appropriate surge suppression or derating measures are considered to maintain optimal performance and lifespan.
How is the coil voltage of the 3RT6017-1AN21 supplied?
The Siemens 3RT6017-1AN21 features a 220 VAC coil voltage, which is a standard in many industrial control systems. This coil is energized by a separate control circuit to operate the contactor.
To operate the contactor, a stable 220VAC power source must be connected to the coil terminals. This coil circuit should be protected by appropriate control circuit fuses or miniature circuit breakers to prevent damage from overcurrents or short circuits.
The control circuit powering the 220VAC coil can be switched by various devices, including manual push buttons, limit switches, relays, or programmable logic controllers (PLCs). Proper sequencing and safety interlocks should be incorporated into the control logic.
