Siemens 3RT6016-1AF02 Low Voltage SIRIUS Control Contactor 110VAC 9A 3NO

The Siemens 3RT6016-1AF02 is a low-voltage SIRIUS control contactor designed for robust and reliable switching applications in industrial environments. This 9A, 110VAC unit, featuring 3 normally open (NO) contacts, offers significant advantages in terms of compact design, high switching capacity, and exceptional operational longevity. Its core features include a readily accessible auxiliary contact block, superior heat dissipation, and robust terminal connections, making it a preferred choice for machine builders and system integrators prioritizing performance and dependability. Key technical parameters include its 9A rated operational current, 110VAC coil voltage, and IP20 protection rating.

Product Specifications

| Feature                    | Specification                  |

| :------------------------- | :----------------------------- |

| Product Series             | SIRIUS Control Contactor       |

| Manufacturer               | Siemens                        |

| Model Number               | 3RT6016-1AF02                  |

| Rated Operational Current  | 9 A                            |

| Coil Voltage               | 110 VAC                        |

| Number of NO Contacts      | 3                              |

| Number of NC Contacts      | 0                              |

| Auxiliary Contacts         | Screw Terminal                 |

| Protection Rating          | IP20                           |

| Mounting Type              | Rail Mount                     |

| Operating Temperature      | -25°C to +60°C                 |

| Dimensions (H x W x D)     | 70 mm x 45 mm x 72 mm (approx.) |

Core Features & Market Positioning

The Siemens 3RT6016-1AF02 distinguishes itself through its exceptionally compact construction, a critical factor in modern control panel design where space is at a premium. This small footprint does not compromise its performance; the contactor boasts high electrical endurance, ensuring a long service life even under frequent switching cycles. Its market positioning is firmly rooted in its reliability and the trusted Siemens brand, often specified in applications demanding high uptime and minimal maintenance. The integrated auxiliary contacts, accessible from the front, streamline wiring and reduce potential error points during installation and maintenance. Furthermore, the design facilitates efficient heat dissipation, preventing overheating and ensuring stable operation within specified load parameters.

Key Application Scenarios

This Siemens 3RT6016-1AF02 low-voltage control contactor is ideally suited for a wide array of industrial applications. Its primary use is in the switching of motor loads, including small to medium-sized three-phase motors, where its 9A rating is appropriate. It is frequently employed in HVAC systems for controlling fans, pumps, and compressors, providing reliable operation in demanding environmental conditions. In building automation, the 3RT6016-1AF02 can be found controlling lighting circuits, solenoid valves, and other auxiliary equipment. Its robustness also makes it suitable for use in material handling systems, packaging machinery, and general industrial control panels where dependable switching is paramount.

Practical System Integration Guidance

Integrating the Siemens 3RT6016-1AF02 into existing or new control systems is straightforward due to its standardized design. The contactor is equipped for direct mounting onto a standard 35mm DIN rail, simplifying panel assembly. For wiring, the power terminals are designed for secure connection using screw-type terminals, accommodating appropriate cable gauges for the 9A rating. Control wiring to the 110VAC coil should adhere to local electrical codes and standards. When used for motor control, it is often paired with an overload relay (such as a Siemens 3RU or 3RB series) connected in series with the motor to provide thermal and short-circuit protection. Ensuring proper coil voltage supply (110VAC) is crucial for correct operation.

Operation and Risk Mitigation

Proper operation of the Siemens 3RT6016-1AF02 involves ensuring that the supplied control voltage to the coil is stable and within the specified 110VAC range. Over-voltage can damage the coil, while under-voltage may lead to unreliable switching or failure to engage. It is essential to ensure that the connected load does not exceed the contactor's rated current of 9A to prevent overheating and premature contact failure. Electrical shock is a significant risk; always de-energize the control circuit and verify the absence of voltage before performing any maintenance or wiring. Proper grounding of the control panel and all connected equipment is mandatory. In case of persistent nuisance tripping or failure to switch, inspect the coil for damage and the contacts for pitting or excessive wear.

Scalability & Long-Term Value

The Siemens 3RT6016-1AF02 SIRIUS control contactor is designed with long-term value and system scalability in mind. Its compatibility with other SIRIUS components, such as overload relays and circuit breakers, allows for the construction of modular and expandable control systems. This interoperability ensures that as system requirements evolve, the contactor can remain a reliable component within a broader, integrated solution. While this specific model is a foundational element, Siemens' broader SIRIUS ecosystem supports integration with modern Industry 4.0 initiatives, enabling data acquisition for condition monitoring and predictive maintenance when combined with appropriate gateways and software platforms, thus enhancing the overall long-term operational efficiency and value of the installed base.

Frequently Asked Questions (FAQs)

What is the maximum switching capacity of the Siemens 3RT6016-1AF02?

The Siemens 3RT6016-1AF02 is rated for 9A at 400V AC-3 duty, suitable for switching squirrel cage motors. It has a mechanical lifespan of up to 10 million switching cycles.

Can I use the Siemens 3RT6016-1AF02 for DC loads?

This contactor is specifically designed and rated for AC applications, particularly for motor control (AC-3). Using it for DC loads is not recommended and will likely result in premature failure.

How do I wire an auxiliary contact to the Siemens 3RT6016-1AF02?

The 3RT6016-1AF02 has front-accessible terminals for auxiliary contacts. Ensure the coil is de-energized before wiring. Consult the product manual for specific terminal assignments and wiring diagrams.

What is the coil voltage for the Siemens 3RT6016-1AF02?

The coil voltage for the Siemens 3RT6016-1AF02 is 110VAC. It is crucial to supply this exact voltage to ensure proper operation and prevent coil damage.

Is the Siemens 3RT6016-1AF02 suitable for hazardous environments?

The 3RT6016-1AF02 has an IP20 rating, making it suitable for standard industrial environments. For hazardous locations, specialized explosion-proof contactors are required.

What is the difference between a contactor and a relay?

Contactors are generally designed for higher power switching (like motors), while relays are for lower power control circuits. This 3RT6016-1AF02 is a contactor.

Does the Siemens 3RT6016-1AF02 require a separate overload relay?

Yes, for motor protection, it is essential to use a properly sized overload relay (e.g., Siemens 3RU series) in conjunction with the 3RT6016-1AF02.

What are the dimensions of the Siemens 3RT6016-1AF02?

The approximate dimensions are 70mm (height) x 45mm (width) x 72mm (depth). This compact size is ideal for space-constrained control panels.

How can I troubleshoot a Siemens 3RT6016-1AF02 that is not switching?

Check the 110VAC coil supply. Verify auxiliary contacts are correctly wired and functioning. Inspect main contacts for signs of wear or welding.

What is the protection rating of this contactor?

The Siemens 3RT6016-1AF02 has an IP20 protection rating, meaning it is protected against solid objects larger than 12.5mm but not against water ingress.