Siemens 3RT2317-1AP00 AC Control Contactor for Industrial Use 230VAC 22A 4NO

The Siemens 3RT2317-1AP00 AC Control Contactor is a robust and reliable component engineered for demanding industrial applications, offering seamless control of motor loads and other electrical circuits. This 230VAC, 22A contactor boasts four normally open (4NO) auxiliary contacts, providing essential flexibility for complex control schemes. Its compact design, superior switching performance, and adherence to stringent international standards make it a preferred choice for system integrators and maintenance engineers seeking dependable power management solutions. The Siemens 3RT2317-1AP00 stands out with its high electrical endurance, advanced insulation properties, and straightforward installation, ensuring operational continuity and safety in diverse industrial environments.

Siemens 3RT2317-1AP00: Comprehensive Product Specifications

| Feature                 | Specification                                     |

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

| Product Type            | AC Control Contactor                              |

| Manufacturer            | Siemens                                           |

| Model Number            | 3RT2317-1AP00                                     |

| Rated Operational Voltage (AC) | 230 VAC                                           |

| Rated Operational Current (AC-1) | 22 A                                              |

| Number of NO Contacts   | 4                                                 |

| Number of NC Contacts   | 0                                                 |

| Control Circuit Voltage | 230 VAC                                           |

| Coil Type               | AC Operated                                       |

| Mounting Type           | DIN rail or screw mounting                        |

| Enclosure Type          | IP20 (finger-safe)                                |

| Ambient Operating Temp. | -25 to +60 °C                                      |

| Electrical Endurance    | High (specific cycles depend on load)             |

| Dimensions (H x W x D)  | Approx. 70 mm x 45 mm x 73 mm                       |

| Standards Compliance    | IEC 60947-4-1, VDE 0660, UL, CSA                    |

Core Features & Market Positioning

The Siemens 3RT2317-1AP00 AC Control Contactor is distinguished by its superior switching reliability, a critical factor in industrial automation where downtime is costly. Its robust construction, featuring hardened silver alloy contacts, ensures consistent performance even under heavy duty cycles and challenging environmental conditions. The integrated surge suppression within the coil circuit protects against voltage spikes, enhancing longevity and preventing premature failure. Compared to other contactors in its class, the 3RT2317-1AP00 offers an optimal balance of performance, size, and cost-effectiveness, positioning it as a high-value solution for general-purpose motor control and switching applications. Siemens' reputation for engineering excellence further solidifies its market standing as a trusted component in critical industrial systems.

Key Application Scenarios

This Siemens 3RT2317-1AP00 contactor is ideally suited for controlling a wide array of industrial loads. Common applications include direct-on-line (DOL) motor starting for pumps, fans, compressors, and conveyor systems, where its 22A rating is well within typical parameters. It is also extensively used in lighting control circuits, heating systems, and general power switching tasks within manufacturing plants, processing facilities, and building automation systems. The four normally open contacts provide ample flexibility for interlocking functions, signal feedback to control panels, or implementing multi-circuit switching sequences. Its ability to operate reliably with a 230VAC coil voltage makes it a direct fit for many standard control power networks.

Practical System Integration Guidance

Integrating the Siemens 3RT2317-1AP00 into existing or new control panels is streamlined due to its standard DIN rail mounting capability and compact footprint. Wiring the main power terminals involves connecting the incoming power supply to the top terminals and the load to the bottom terminals, adhering to the specified torque values for secure connections. The control circuit wiring connects the 230VAC coil voltage to the designated A1 and A2 terminals. For auxiliary contacts, typically the lower set of terminals are for NO contacts, and the upper set are for NC contacts (though the 3RT2317-1AP00 only has NO contacts). Ensure proper grounding of the contactor frame for safety. Consult the Siemens SIRIUS 3RT2 catalog for detailed wiring diagrams and load-side connection examples relevant to your specific motor control configuration.

Operation and Risk Mitigation

The Siemens 3RT2317-1AP00 operates by energizing its coil, which generates a magnetic field that pulls the armature, closing the main power contacts and completing the circuit to the load. De-energizing the coil releases the armature, and spring action opens the contacts. Safe operation is ensured through proper installation, adherence to electrical codes, and using the correct voltage for the coil. Key risk mitigation strategies include regular inspection of contacts for wear or pitting, checking wiring connections for tightness, and ensuring the control circuit is isolated before any maintenance. Overloading the contactor beyond its 22A rating can lead to overheating and premature failure. Common troubleshooting involves verifying coil voltage supply and checking for mechanical obstructions preventing contact closure.

Scalability & Long-Term Value

The Siemens 3RT2317-1AP00 is part of the broader Siemens SIRIUS modular contactor system, offering significant scalability and long-term value. Its compatibility with other SIRIUS components, such as overload relays (e.g., 3RU21), terminal blocks, and communication modules, allows for easy expansion and integration into more complex automation architectures. For systems moving towards digital integration, these contactors can be incorporated into control cabinets linked to PLCs or HMIs, enabling remote monitoring and diagnostics. This ensures that the installed base can evolve with Industry 4.0 initiatives, maintaining a high level of operational efficiency and foresight without requiring a complete system overhaul.

Frequently Asked Questions (FAQs)

Q1: What is the maximum voltage for the Siemens 3RT2317-1AP00?

The Siemens 3RT2317-1AP00 is designed for a rated operational voltage of 230 VAC for the main power circuit. Its coil also operates on 230 VAC. Always ensure the supply voltage matches the product's specifications to prevent damage or malfunction.

This contactor is suitable for switching inductive loads like motors, but you must ensure the voltage rating is not exceeded during transient conditions. Always verify the system's voltage stability.

For auxiliary circuits or control logic, it's crucial to maintain voltages within the specified limits for reliable operation. Consult the manual for any specific low-voltage circuit considerations.

Q2: Can I use the Siemens 3RT2317-1AP00 for DC loads?

No, the Siemens 3RT2317-1AP00 is specifically designed for AC (Alternating Current) loads. Using it with DC (Direct Current) loads can lead to severe damage and failure.

DC current creates a continuous magnetic field that can prevent the contacts from opening reliably, causing arcing and welding. Specialized DC contactors are required for DC applications.

Always refer to the product datasheet to confirm AC or DC suitability. For DC circuits, select contactors with arc suppression mechanisms designed for direct current.

Q3: How do I wire the Siemens 3RT2317-1AP00?

Wiring involves connecting the incoming power to the top terminals (L1, L2, L3) and the load to the bottom terminals (T1, T2, T3). The 230 VAC coil is connected to terminals A1 and A2.

For the four normally open (NO) auxiliary contacts, they are typically pre-wired internally. You can use these for control logic or signaling by connecting your control signals to the appropriate terminals as shown in the wiring diagram.

Ensure all connections are tight and torqued correctly. Always disconnect power before performing any wiring to ensure safety and prevent electrical hazards.

Q4: What is the significance of 4NO contacts on the 3RT2317-1AP00?

4NO (Normally Open) contacts mean that when the contactor coil is de-energized, these four contacts are open. When the coil is energized, these four contacts close, allowing current to flow.

This configuration is useful for applications requiring multiple circuits to be energized simultaneously, such as interlocking multiple motors or providing feedback signals. It offers high flexibility in control system design.

The 4NO setup is common for signaling that a motor is running or for creating complex start/stop sequences where multiple conditions must be met. It simplifies wiring compared to using multiple separate auxiliary contact blocks.

Q5: What is the IP rating of the Siemens 3RT2317-1AP00?

The Siemens 3RT2317-1AP00 has an IP20 rating. This signifies that it is protected against solid objects larger than 12.5 mm (like a finger) and has no protection against water ingress.

This rating means the contactor is suitable for installation in control cabinets or enclosures where external contact is prevented. It ensures protection for personnel against touching live parts.

For environments with dust, moisture, or corrosive substances, additional protective measures or enclosures with higher IP ratings may be necessary to safeguard the contactor.

Q6: What is the ambient temperature range for this contactor?

The Siemens 3RT2317-1AP00 can operate reliably within an ambient temperature range of -25°C to +60°C. This broad range makes it suitable for diverse industrial environments, from cold storage to hot production floors.

Operating outside this specified range can affect the contactor's performance, longevity, and safety. Extreme cold might affect mechanical actuation, while extreme heat can lead to coil degradation.

It is essential to ensure adequate ventilation around the contactor within control panels, especially in warmer environments, to maintain optimal operating temperatures and prevent overheating.

Q7: How does the Siemens 3RT2317-1AP00 integrate with overload relays?

The 3RT2317-1AP00 is designed to work seamlessly with Siemens SIRIUS 3RU21 series overload relays. These relays are typically mounted directly below the contactor, sharing the same mounting rail.

The overload relay monitors the current to the motor and will trip (open its NC auxiliary contact) if an overload condition is detected. This signal is often wired in series with the contactor's coil control circuit.

This integration provides essential motor protection against overcurrents and phase failures, preventing damage to the motor and ensuring operational safety.

Q8: What kind of maintenance is required for the Siemens 3RT2317-1AP00?

Routine maintenance primarily involves visual inspection for any signs of physical damage, excessive wear on contacts, or loose wiring. Checking the tightness of terminal connections is also crucial.

The contactor itself is generally maintenance-free in terms of lubrication or adjustments. Its robust design ensures long operational life under normal conditions.

Periodic testing of the control circuit and auxiliary contacts can be performed to ensure correct operation and responsiveness during start-up or planned maintenance windows.

Q9: Is the Siemens 3RT2317-1AP00 suitable for frequent switching applications?

Yes, the Siemens 3RT2317-1AP00 is built for industrial use and can handle frequent switching cycles, provided the load current does not exceed its rated capacity and the switching frequency is within the manufacturer's guidelines.

The high electrical endurance of the silver alloy contacts ensures longevity even with repeated make-and-break operations. However, very high switching frequencies might require specialized contactors or specific operating conditions.

For applications involving extremely high cycle rates (e.g., hundreds of times per hour), it's advisable to consult the detailed technical documentation or Siemens support to confirm suitability and any potential derating factors.

Q10: What safety precautions should be taken when working with this contactor?

Always de-energize the main power circuit and the control circuit before performing any installation, wiring, or maintenance. Lockout/tagout procedures must be strictly followed.

Ensure the contactor is correctly rated for the voltage and current of the application. Use appropriate personal protective equipment (PPE), such as insulated gloves and safety glasses.

Verify that the control panel is properly grounded and that all wiring complies with relevant electrical safety standards and local codes to prevent shocks or equipment damage.