ABB AX18-30-10-80 18A Industrial Contactor 24V AC

The ABB AX18-30-10-80 18A Industrial Contactor is a robust and reliable component designed for demanding industrial applications. This 24V AC contactor offers exceptional performance with a 4kW power rating at 400V, an IP20 protection degree, and a substantial electrical durability of 150,000 cycles. Its compact design, measuring 45mm in width, facilitates efficient panel space utilization. The AX18-30-10-80 features three main poles and one auxiliary contact, ensuring versatile control capabilities. With a standard IEC/EN 60947-4-1 compliance and an operating temperature range of -25 to +55°C, it provides dependable operation across various environmental conditions.

Product Specifications

| Parameter                | Value                                     |

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

| Contactor Type           | AX18-30                                   |

| Rated Operational Power  | 4 kW (at 400V AC, AC-3)                   |

| Coil Voltage             | 24V AC                                    |

| Number of Main Poles     | 3                                         |

| Number of Auxiliary Contacts | 1 Normally Open (NO)                      |

| Rated Operational Current | 18A (AC-3, 400V)                          |

| Rated Frequency          | 50/60 Hz                                  |

| Protection Degree        | IP20                                      |

| Electrical Durability    | 150,000 cycles                            |

| Mechanical Durability    | 300,000 cycles                            |

| Width                    | 45 mm                                     |

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

| Compliance               | IEC/EN 60947-4-1, IEC/EN 60947-5-1        |

| Terminals                | Screw Terminals                           |

Core Features & Market Positioning

The ABB AX18-30-10-80 distinguishes itself through its compact width, a significant advantage in modern control panels where space is at a premium. Its robust construction ensures high electrical and mechanical durability, translating to extended service life and reduced maintenance costs, a key factor for industrial operations. This contactor is positioned as a reliable, cost-effective solution for motor control and general switching duties, leveraging ABB's long-standing reputation for quality and innovation in industrial automation. The 24V AC coil voltage is standard in many control systems, ensuring broad compatibility and ease of integration into existing setups.

Key Application Scenarios

This 18A industrial contactor is ideally suited for controlling and switching three-phase motors in applications such as pumps, fans, compressors, and conveyor systems. Its reliable performance makes it a staple in building automation, HVAC systems, and general manufacturing processes where consistent motor operation is critical. The AX18-30-10-80 is frequently specified for power distribution and control circuits in various industrial environments, including food and beverage processing, water treatment, and machine tools, owing to its compliance with international standards.

Practical System Integration Guidance

Integrating the ABB AX18-30-10-80 into control systems is straightforward due to its standard terminal configurations and compact design. Wiring involves connecting the power supply to the main poles (terminals 1-2, 3-4, 5-6) and the motor to the load side (terminals 2, 4, 6). The auxiliary NO contact (terminal 13-14) can be wired into control logic for status feedback or interlocking. For a 24V AC coil, ensure the control voltage supply matches precisely to prevent malfunction or coil damage. Proper wire termination using appropriate tools for the screw terminals is crucial for secure and reliable electrical connections.

Operation and Risk Mitigation

Safe operation of the ABB AX18-30-10-80 requires adherence to electrical safety standards and proper installation practices. Always ensure the power supply is de-energized before performing any wiring or maintenance. Overloading the contactor beyond its rated AC-3 capacity can lead to premature failure; consult the operational power ratings carefully. In case of failure, common issues include coil burnout due to overvoltage or continuous energization without sufficient cooling, or contact welding due to excessive arcing from frequent switching under heavy load. Ensure the ambient temperature remains within the specified operating range to prevent overheating.

Scalability & Long-Term Value

The ABB AX18-30-10-80 is part of ABB's broader range of motor control and automation products, allowing for seamless integration and scalability within larger systems. Its compatibility with other ABB components, such as overload relays and control units, facilitates the creation of comprehensive motor starter solutions. While this specific contactor is designed for direct control, its integration into modern IIoT platforms can be achieved through associated control devices that provide communication capabilities, enabling remote monitoring and diagnostics, thus enhancing long-term operational value.

Frequently Asked Questions

What is the maximum AC-3 power rating for the ABB AX18-30-10-80?

The ABB AX18-30-10-80 industrial contactor is rated for a maximum operational power of 4kW when switching three-phase motors under AC-3 duty at 400V. This rating is crucial for ensuring the contactor can handle the inductive load of motors during startup and operation without overheating or premature failure. It is important to select a contactor that exceeds the motor's nominal power requirement to guarantee longevity and reliability under typical operating conditions.

How do I wire the auxiliary contact on the AX18-30-10-80?

The AX18-30-10-80 features one auxiliary normally open (NO) contact, typically labeled 13-14. This contact can be wired into your control circuit to provide status feedback, such as indicating when the contactor is energized, or used for interlocking purposes within a control logic sequence. Connect one wire from your control voltage source to terminal 13 and the other to terminal 14, which will then become a closed circuit when the main contactor coil is energized.

What is the correct coil voltage for the ABB AX18-30-10-80?

The specific model designation "AX18-30-10-80" indicates that this contactor is designed to operate with a 24V AC coil voltage. It is critical to supply precisely 24V AC to the coil terminals (typically labeled A1 and A2) to ensure proper functioning and prevent damage. Using a voltage significantly higher or lower than 24V AC can lead to improper operation, reduced lifespan, or immediate failure of the contactor coil.