ABB AX115-30-11-80 115A 3P AC Contactor 24V Coil

The ABB AX115-30-11-80 is a robust 3-pole AC contactor designed for reliable control of 3-phase motors and power circuits up to 690V AC. This unit features a 115A rated operational current (AC-3) and is equipped with a 24V coil, ensuring efficient and safe operation in demanding industrial environments. Its compact design, combined with a high electrical switching frequency of up to 300 cycles per hour and a mechanical durability of 10 million cycles, positions it as a dependable component for motor control applications. The contactor is built with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, facilitating essential control and signaling functions within a system.

Product Specifications

| Parameter                      | Specification                                                                 |

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

| Product Type               | Contactor                                                                     |

| ABB Model                  | AX115-30-11-80                                                                |

| Number of Poles            | 3                                                                             |

| Rated Operational Current (AC-1) | 115 A (at 380/400 V, 55°C)                                                    |

| Rated Operational Current (AC-3) | 115 A (at 220/230/240 V, 55°C), 59 kW (at 415 V)                               |

| Coil Voltage               | 24V AC (Note: Searches indicate 220-230V/230-240V coils are standard for this model. Verifying specific 24V coil availability is recommended.) |

| Rated Operational Voltage (Main Circuit) | 1000 V                                                                        |

| Rated Impulse Withstand Voltage (Uimp) | 8 kV                                                                          |

| Conventional Free-air Thermal Current (Ith) | 160 A (at 40°C)                                                               |

| Auxiliary Contacts         | 1 NO + 1 NC                                                                   |

| Rated Control Circuit Voltage (Uc) | 220-230 V (50 Hz) / 230-240 V (60 Hz) (Commonly found)     |

| Mechanical Durability      | 10 million cycles                                                             |

| Electrical Switching Frequency | 300 cycles per hour                                                           |

| Degree of Protection       | IP40 (Auxiliary Terminals)                                                    |

| Mounting Method            | DIN rail or screw mounting                                                    |

| Operating Temperature      | -25°C to +55°C                                                                |

Core Features & Market Positioning

The ABB AX115-30-11-80 contactor distinguishes itself through its reliable performance and compact, modern design. It is engineered for robust motor control and power circuit switching, offering a high degree of operational efficiency and safety. The inclusion of integrated auxiliary contacts simplifies control circuit design and system monitoring capabilities. Its market positioning is that of a dependable workhorse for industrial applications where consistent performance and durability are paramount, often competing with other leading IEC contactor manufacturers. The AX115 series is known for its efficient arc suppression and heavy-duty contacts, ensuring longevity even under frequent or high-inrush operations.

Key Application Scenarios

This ABB AX115-30-11-80 contactor is ideally suited for a broad range of industrial applications, primarily focusing on the control of 3-phase motors. Common scenarios include:

  Motor Starting: Direct-on-line (DOL) starters for pumps, fans, compressors, and conveyors.  Industrial Automation: Integration into machine control panels and automated manufacturing systems.  Power Distribution: Switching of inductive and resistive loads in various industrial settings.  HVAC Systems: Controlling large motors in heating, ventilation, and air conditioning equipment.  MCC Panels: Serving as a critical switching component within Motor Control Centers.  Star-Delta Starters: Facilitating the transition between motor winding configurations.

Practical System Integration Guidance

Integrating the ABB AX115-30-11-80 into an electrical system requires careful attention to wiring and mounting. The contactor is designed for straightforward DIN rail or screw mounting, ensuring flexibility in panel layouts. Proper tightening of terminals is crucial for maintaining reliable electrical connections and preventing overheating. The coil voltage must precisely match the control circuit's power supply; while this specific model is often found with 220-230V/230-240V coils, users seeking a 24V coil should verify its availability or consider compatible accessories if not standard. Wiring should strictly adhere to ABB's provided diagrams to ensure correct functionality and safety, particularly regarding the auxiliary contacts (1NO + 1NC) which can be used for signaling status or interlocking other components. For motor control, it is often paired with ABB overload relays for comprehensive protection.

Operation and Risk Mitigation

Safe operation of the AX115-30-11-80 contactor relies on adherence to its specified operating parameters and proper installation. The main circuit can handle voltages up to 1000V, with AC-3 ratings suitable for motor loads. Its thermal current rating (Ith) of 160A at 40°C and AC-1 rating of 115A at 690V indicate its capacity for handling significant power. Operators must ensure that the control circuit voltage aligns with the coil's specified rating (typically 220-240V AC) to prevent coil damage or malfunction. The degree of protection for auxiliary terminals is IP40, meaning they are protected against solid objects larger than 1mm but offer no significant water ingress protection; therefore, the contactor should be installed in an environment protected from excessive moisture and dust. Regular inspection for wear on contacts and proper functioning of the auxiliary contacts will help mitigate potential failure modes.

Scalability & Long-Term Value

The AX115-30-11-80 contactor offers significant long-term value through its compatibility and the modularity of the AX115 range. ABB's commitment to a unified design across its contactor lines facilitates seamless integration with other ABB components, such as overload relays and various auxiliary contact blocks, which can be added for enhanced functionality if not already present. This modularity allows for system expansion and adaptation to evolving operational requirements. While direct digital integration capabilities are not explicitly detailed for this specific model, modern industrial automation often leverages connected control systems where contactors are commanded by PLCs. The robust build quality and high mechanical durability (10 million cycles) ensure a long operational lifespan, reducing the need for frequent replacements and contributing to overall system reliability and cost-effectiveness.

Frequently Asked Questions

Q1: What is the primary function of the ABB AX115-30-11-80 contactor?

The ABB AX115-30-11-80 contactor serves as an electrically operated switch for controlling high-power circuits. It is specifically designed for frequent switching of 3-phase motors and other industrial electrical loads. Its robust construction ensures reliable operation in demanding environments.

This device opens and closes electrical contacts to initiate or interrupt power flow. It is crucial for automating industrial processes, enabling remote control of machinery, and ensuring safety through controlled power management.

The contactor's primary role is to safely handle the high currents associated with motor starting and operation, preventing damage to equipment and ensuring system stability.

Q2: What are the key technical specifications of the AX115-30-11-80?

This contactor features a 3-pole configuration and a 115A AC-3 rating. It has a coil voltage typically around 220-240V AC, though specific configurations may vary.

It includes one normally open (NO) and one normally closed (NC) auxiliary contact for control circuit integration. The main circuit is rated up to 1000V operational voltage.

The unit boasts a conventional free-air thermal current (Ith) of 160A and a mechanical durability of 10 million cycles, underscoring its industrial-grade build.

Q3: In which industrial applications is the ABB AX115-30-11-80 commonly used?

The AX115-30-11-80 is widely deployed in motor control applications. This includes direct-on-line (DOL) starters for pumps, fans, compressors, and conveyors.

It is a key component in motor control centers (MCC panels) and industrial automation systems. It also finds use in HVAC systems and other machinery requiring robust switching of 3-phase loads.

Its versatility extends to star-delta starter configurations and general power switching duties in manufacturing plants and processing facilities.

Q4: What is the rated operational voltage and current for this ABB contactor?

The ABB AX115-30-11-80 has a rated operational voltage for the main circuit of up to 1000V. Its AC-3 current rating is 115A at 220-240V (55°C), supporting significant motor loads.

For general switching (AC-1), it can handle up to 160A at 690V and 40°C. This broad operational capability makes it suitable for various power control scenarios.

The device is designed to manage substantial power, with a rated operational power of 55 kW at 380/400V (AC-3) and 30 kW at 220/230/240V (AC-3).

Q5: Can I use a 24V coil with the AX115-30-11-80 contactor?

Standard configurations of the AX115-30-11-80 commonly feature 220-240V AC coils. While 24V coils are common for smaller contactors, availability for this specific model may be limited.

It is advisable to verify the exact coil voltage of the specific unit you are considering. If a 24V AC or DC coil is required, you may need to explore alternative models or compatible coil accessories.

If a 24V coil is essential, consult ABB documentation or a distributor to confirm if a specific variant exists or if a separate control transformer and suitable relay are necessary for your application.

Q6: What type of auxiliary contacts does the AX115-30-11-80 have?

The ABB AX115-30-11-80 contactor is equipped with one normally open (NO) and one normally closed (NC) auxiliary contact. These are standard for many control and signaling tasks.

These auxiliary contacts are essential for building control logic, such as interlocking other contactors or signaling the operational status of the main circuit. They operate independently of the main power poles.

While this unit comes with a fixed set of auxiliary contacts, the AX115 series often supports add-on auxiliary contact blocks for front or side mounting, allowing for expanded control functionality.

Q7: How is the AX115-30-11-80 contactor typically mounted in a control panel?

This ABB contactor is designed for versatile mounting options within industrial control panels. It can be securely installed using standard DIN rail mounting or traditional screw mounting.

The DIN rail option offers a quick and efficient method for installation and removal, common in modern panel building. Screw mounting provides a fixed and robust connection for stationary applications.

Ensuring proper torque is applied during screw mounting is critical for maintaining electrical integrity and preventing mechanical stress on the contactor or the panel.

Q8: What is the mechanical and electrical lifespan of this contactor?

The AX115-30-11-80 contactor boasts impressive durability. It has a mechanical life of approximately 10 million cycles, meaning it can endure numerous open and close operations.

Electrically, it is rated for up to 300 switching cycles per hour. This electrical switching frequency is suitable for many demanding industrial motor control applications.

These ratings indicate a long operational lifespan, contributing to reduced maintenance costs and system downtime over the product's service life.

Q9: Does the AX115-30-11-80 integrate with ABB overload relays?

Yes, the ABB AX115-30-11-80 is designed for seamless integration with ABB overload relays. This pairing is standard practice for comprehensive motor protection.

The overload relay detects overcurrent conditions and trips the contactor, preventing motor damage. This combination ensures both switching and protective functions are covered by the ABB ecosystem.

When integrating, ensure the overload relay's current rating and trip characteristics are appropriately matched to the motor and the AX115 contactor's capabilities.

Q10: What are the benefits of using ABB contactors like the AX115-30-11-80?

ABB contactors, including the AX115-30-11-80, offer reliable performance and a compact design, simplifying panel space requirements. They are built with robust components for extended operational life.

These contactors provide efficient arc suppression and heavy-duty contacts, ensuring consistent switching performance even with high inrush currents or frequent operations.

Their widespread availability, compatibility with a range of accessories, and strong manufacturer support contribute to their value, making them a trusted choice for industrial automation and motor control worldwide.