ABB AX95-30-11-80 95A 3P AC Contactor 24V Coil

The ABB AX95-30-11-80 is a robust 3-pole AC contactor designed for reliable operation in demanding industrial applications. With a rated current of 95A and a 24V coil, this contactor offers a dependable solution for motor control, power switching, and automation systems. Its compact, block-type design facilitates easy integration into control panels, while its durable construction ensures long service life. Key advantages include its high breaking capacity, mechanical durability, and compliance with international standards, positioning it as a preferred choice for engineers seeking high-performance switching solutions.

Product Specifications

| Parameter                       | Specification                                                              |

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

| Product Name                    | AX95-30-11-80 Contactor                                                    |

| Manufacturer                    | ABB                                                                        |

| Number of Poles                 | 3                                                                          |

| Rated Current (AC-3, 400V)      | 95 A                                                  |

| Rated Operational Power (AC-3)  | 45 kW (at 380/400V)                                  |

| Coil Voltage                    | 24V AC (though other voltages like 110V, 220V, 380V are available for other variants) |

| Auxiliary Contacts              | 1 Normally Open (NO) + 1 Normally Closed (NC)          |

| Rated Voltage (Main Circuit)    | 690 V                                                         |

| Mechanical Durability           | 10 million cycles                                      |

| Degree of Protection            | IP20 (refer to general standard) / IP40 (Auxiliary Terminals) |

| Operating Temperature           | -25°C to +55°C / -25°C to 70°C (close to contactor with O/L relay) |

| Installation Method             | Screw installation                                               |

| Certifications                  | CCC, CE                                                          |

| Conventional Free-air Thermal Current (Ith) | 145 A                                                        |

| Rated Impulse Withstand Voltage | 8 kV                                                      |

Core Features & Market Positioning

The ABB AX95-30-11-80 distinguishes itself through its robust construction and reliable performance, a hallmark of ABB's long-standing reputation in industrial automation. Its AC-operated coil ensures compatibility with standard industrial power systems, while the integrated auxiliary contacts offer essential feedback for control circuits and interlocking functions. The contactor is designed for a high mechanical lifespan of 10 million cycles, minimizing maintenance downtime. This reliability and durability place it competitively in the market for medium to heavy-duty motor control applications, where consistent operation is paramount. Its compact, modular design allows for flexible system integration, appealing to engineers who prioritize efficient panel layouts.

Key Application Scenarios

This ABB contactor is ideally suited for controlling three-phase motors in various industrial settings, including manufacturing plants, pumping stations, and HVAC systems. Its 95A rating makes it a strong choice for direct-on-line motor starting, isolation duties, and power distribution up to 690V AC. Applications also extend to controlling heating elements, capacitor banks, and other inductive or resistive loads where reliable switching is critical. The inclusion of auxiliary contacts supports complex control logic, such as motor protection schemes and interlocks between multiple equipment components.

Practical System Integration Guidance

Integrating the AX95-30-11-80 into an electrical system is straightforward due to its standardized design and clear terminal markings. The main circuit connections are typically screw terminals, ensuring a secure and reliable electrical connection. For the coil circuit, the 24V AC voltage is standard for many control systems. It is crucial to ensure the control voltage supply matches the contactor's coil rating (24V AC) to prevent damage or malfunction. When wiring auxiliary contacts, ensure they are correctly identified (NO/NC) and connected to the appropriate control logic or signaling circuits. For systems requiring overload protection, the AX95-30-11-80 can be paired with ABB's range of thermal or electronic overload relays, often mountable directly onto the contactor, creating a compact motor control unit.

Operation and Risk Mitigation

Safe operation of the ABB AX95-30-11-80 relies on adherence to proper electrical installation practices and understanding its operational limits. Ensure all power sources are de-energized before performing any wiring or maintenance. The contactor's degree of protection (IP20/IP40) means it should be installed within an enclosure to protect against dust and accidental contact. Environmental conditions, such as ambient temperature, should be within the specified operating range of -25°C to +55°C to maintain performance and longevity. Overloading the contactor beyond its rated capacity (95A AC-3) can lead to premature failure or safety hazards. Always consult the product datasheet for detailed information on short-circuit withstand capabilities and appropriate protective devices.

Scalability & Long-Term Value

The ABB AX95-30-11-80 offers significant long-term value through its inherent modularity and compatibility with broader ABB automation ecosystems. The ability to add auxiliary contact blocks, either front or side-mounted, allows for system expansion without replacing the entire contactor, catering to evolving control requirements. While direct integration with IIoT platforms may require additional intermediary devices like smart relays or gateways, the contactor's reliable operation serves as a foundational component in any modern automated system. Its robust build quality ensures a long operational life, reducing the total cost of ownership over time and minimizing the need for frequent replacements.

Frequently Asked Questions (FAQs)

What is the primary application for the ABB AX95-30-11-80 contactor?

The ABB AX95-30-11-80 is primarily designed for controlling three-phase motors in industrial environments. Its robust 95A rating makes it suitable for applications requiring significant power switching capacity.

This contactor is also used for general power switching, isolation, and in distribution systems, offering versatile functionality beyond motor control. It can effectively manage loads up to 690V AC, ensuring reliable operation across diverse industrial setups.

Its integrated auxiliary contacts are beneficial for implementing control logic, safety interlocks, and status feedback in automated systems, enhancing overall system reliability and operational intelligence.

Can the ABB AX95-30-11-80 be used with DC loads?

The AX95-30-11-80 is specifically an AC contactor and is not designed for direct use with DC loads. AC contactors have arc suppression mechanisms optimized for AC circuits.

Using this contactor with DC loads can lead to arc instability, reduced contact life, and potential equipment damage due to the continuous arcing that occurs. For DC applications, dedicated DC contactors or specialized switching devices are required.

Always consult the product's technical specifications and user manual to confirm its suitability for specific load types. Incorrect application can compromise safety and equipment integrity.

What are the main advantages of using an ABB AX95-30-11-80 contactor?

A key advantage is its high reliability and durability, supported by ABB's reputation and the contactor's robust construction and 10 million-cycle mechanical life. This minimizes maintenance and downtime.

The contactor's compact, modular design simplifies panel integration and allows for future expansion with additional auxiliary contact blocks, offering flexibility for evolving system needs.

Its broad compliance with international standards (CCC, CE) and a wide operating temperature range make it suitable for diverse global applications and challenging environmental conditions.

How do I wire the 24V coil of the AX95-30-11-80?

Wire the 24V AC coil according to the wiring diagram provided in the product manual. Ensure the control power source correctly supplies 24V AC to the coil terminals.

Connect the live wire to one coil terminal and the neutral or common to the other. Verify the voltage supply before energizing the control circuit to prevent coil damage.

Always ensure proper grounding of the control panel and adhere to local electrical codes for safe and compliant installation.

What is the rated current and power for the AX95-30-11-80?

The rated operational current for the ABB AX95-30-11-80 under AC-3 duty is 95A at 400V. This indicates its capacity for switching motor loads.

For AC-1 duty (resistive loads), the conventional free-air thermal current (Ith) is 145A, demonstrating its capability to handle higher currents for less demanding loads.

The rated operational power for motor control (AC-3) is 45kW at 380/400V, confirming its suitability for a wide range of industrial motors.

Can I add more auxiliary contacts to the AX95-30-11-80?

Yes, the ABB AX95-30-11-80 is designed to accommodate additional auxiliary contact blocks. These can typically be mounted on the front or side of the contactor.

Adding auxiliary contacts enhances the contactor's functionality, allowing for more complex control circuits, interlocking functions, and signaling capabilities within the automation system.

Ensure you use genuine ABB auxiliary contact blocks compatible with the AX series to guarantee proper fit and reliable operation.

What is the environmental operating range for this contactor?

The AX95-30-11-80 is designed to operate within an ambient temperature range of -25°C to +55°C. However, this can extend up to 70°C when fitted with certain overload relays.

It is important to ensure the contactor is installed within an adequately ventilated enclosure to maintain performance and prevent overheating, especially in warmer environments.

Refer to the specific datasheet for detailed environmental specifications, including altitude limits and humidity considerations, to ensure optimal long-term operation.

How does the AX95-30-11-80 compare to other contactors in its class?

Compared to other contactors in its class, the AX95-30-11-80 offers a robust balance of current handling, mechanical durability, and the flexibility of modular auxiliary contacts. Its ABB branding signifies a commitment to quality and reliability.

ABB's AX series contactors are often chosen for their proven track record in demanding industrial applications, offering a lower total cost of ownership due to their longevity and reduced maintenance requirements.

Its compact design and ease of integration with other ABB components provide a streamlined solution for engineers designing complex control panels and automated systems.

What are the short-circuit withstand ratings for this contactor?

The ABB AX95-30-11-80 has a rated short-time withstand current (Icw) that varies depending on the duration. For instance, it can withstand 800A for 10 seconds and 350A for 1 minute.

These ratings are crucial for selecting appropriate short-circuit protective devices, such as fuses or circuit breakers, to ensure the system's safety in fault conditions.

Always refer to the detailed technical specifications to understand the exact short-circuit ratings and ensure they align with the system's protection coordination requirements.

Is this contactor suitable for use in hazardous locations?

The standard ABB AX95-30-11-80 contactor, with an IP20/IP40 rating, is not designed for direct use in hazardous or explosive environments. Such applications require specialized, explosion-proof enclosures or intrinsically safe equipment.

For use in potentially hazardous areas, consult ABB's product catalog for specific contactors or control solutions designed and certified for those environments, which would include enhanced sealing and explosion-proof construction.

Always verify product certifications and ratings against the requirements of the specific installation environment to ensure safety and compliance.