ABB AX25-30-10-84 Contactor 3 Pole 110V AC 25A

The ABB AX25-30-10-84 is a robust 3-pole contactor designed for reliable power control in demanding industrial environments. This 25A, 110V AC coil unit excels in motor starting and switching applications, offering superior longevity and operational efficiency. Its compact design, combined with advanced thermal overload protection and auxiliary contact options, makes it a versatile and cost-effective solution for various automation and control tasks.

Product Specifications

| Feature               | Specification                     |

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

| Manufacturer          | ABB                               |

| Product Series        | AX25                              |

| Number of Poles       | 3                                 |

| Rated Operational Current (AC-3) | 25 A                              |

| Coil Voltage          | 110 V AC                          |

| Auxiliary Contacts    | 1 NO + 1 NC                       |

| Mounting Type         | DIN rail or screw mounting        |

| Terminal Type         | Screw terminals                   |

| Protection Class      | IP20                              |

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

| Standard Compliance   | IEC/EN 60947-4-1                  |

Core Features & Market Positioning

The ABB AX25-30-10-84 distinguishes itself through its high switching capacity for its size, ensuring dependable operation even under frequent load cycles. Its integrated auxiliary contacts provide immediate feedback on operational status, simplifying control circuit design. Compared to competitors, ABB contactors are recognized for their robust construction and extended service life, positioning the AX25-30-10-84 as a premium choice for applications where downtime is not an option.

Key Application Scenarios

This ABB contactor is ideally suited for direct-on-line (DOL) motor starting in manufacturing plants, HVAC systems, and pump control applications. Its 25A rating is particularly effective for medium-sized motors, providing reliable engagement and disengagement. The 110V AC coil is common in many control panel configurations, facilitating easy integration into existing electrical infrastructure across diverse industrial sectors.

Practical System Integration Guidance

Installing the ABB AX25-30-10-84 is straightforward, accommodating both DIN rail and direct screw mounting for flexibility in panel building. Wiring involves connecting the main power circuit through the primary terminals and the control circuit to the 110V AC coil terminals. The included auxiliary contacts (1 NO, 1 NC) can be wired into the control logic for status monitoring or interlocking functions, ensuring safe and efficient system operation.

Operation and Risk Mitigation

Proper operation of the AX25-30-10-84 relies on ensuring the coil voltage precisely matches the 110V AC supply to prevent overheating or premature failure. Users must adhere to the specified load current ratings (AC-3 category) to avoid contact welding or burnout. The IP20 protection class indicates the need for enclosure within a control panel to safeguard against dust and accidental contact, thus mitigating electrical hazards.

Scalability & Long-Term Value

The AX25-30-10-84 integrates seamlessly with other ABB components and standard industrial control systems, offering excellent compatibility for system expansion. Its robust design ensures a long operational lifespan, minimizing replacement costs and contributing to the overall long-term value of automated systems. For facilities embracing Industry 4.0, this contactor can be part of a smart system when paired with appropriate monitoring devices, contributing to predictive maintenance strategies.

FAQs

What is the primary function of the ABB AX25-30-10-84 contactor?

Its main purpose is to electrically control motors and other high-power equipment. It acts as a heavy-duty switch operated by an electromagnet.

This contactor is ideal for frequent switching operations in industrial settings. It ensures reliable power delivery to machinery, preventing downtime.

The AX25-30-10-84 is commonly used for starting and stopping pumps, fans, and conveyor systems efficiently.

What are the key technical specifications of the AX25-30-10-84?

This is a 3-pole contactor with a rated operational current of 25A (AC-3).

The coil voltage required for operation is 110V AC, and it includes 1 normally open (NO) and 1 normally closed (NC) auxiliary contact.

It is designed for DIN rail or screw mounting and complies with IEC/EN 60947-4-1 standards, offering IP20 protection.

Where is the ABB AX25-30-10-84 typically applied in industrial automation?

It is extensively used for direct-on-line motor starting in manufacturing and process control.

Common applications include controlling HVAC systems, industrial pumps, and material handling equipment like conveyors.

The contactor's reliability makes it suitable for demanding environments where continuous operation is critical.

How is the AX25-30-10-84 installed and wired into a control panel?

Installation is flexible, using either standard 35mm DIN rail or direct screw mounting within control cabinets.

Main power terminals connect to the load, while the coil terminals are wired to the 110V AC control supply.

The integrated auxiliary contacts are wired into the control logic for feedback or interlocks, simplifying circuit design.

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

Always ensure the power supply is de-energized before performing any installation or maintenance work.

Verify the coil voltage (110V AC) matches the control circuit supply to prevent damage or malfunction.

The contactor must be installed within an enclosure to meet its IP20 rating and protect against electrical hazards.

What does the 'AX25-30-10-84' designation mean?

'AX25' indicates the series and frame size, denoting a 25A rating.

The '30' signifies 3 main poles, and '10' denotes the auxiliary contact configuration (1 NO + 1 NC).

The final '84' typically refers to the coil voltage code, in this case, 110V AC.

Can this contactor be used for DC loads?

No, the AX25-30-10-84 is specifically designed for AC circuits, particularly AC-3 motor loads.

Using it with DC loads could lead to arc instability and premature failure of the contacts.

Always select contactors rated for the specific type of load (AC or DC) and its characteristics.

What is the maximum switching frequency for this ABB contactor?

While ABB contactors are robust, specific switching frequencies depend on the load type and ambient conditions.

For AC-3 motor loads, typical duty cycles should be considered to ensure optimal lifespan.

Consult ABB's technical documentation for precise switching frequency limits under various operational scenarios.

How does the 110V AC coil voltage benefit system design?

110V AC is a common and safer low voltage used in many industrial control panels worldwide.

It allows for simpler wiring and grounding compared to higher voltages, reducing installation complexity.

Many control transformers are readily available to step down mains voltage to 110V AC for coil activation.

What are the typical failure modes of an ABB AX25-30-10-84 contactor?

Contact welding due to overload or insufficient breaking capacity is a common issue.

Coil burnout can occur from incorrect voltage supply or sustained overcurrents.

Mechanical wear of moving parts or auxiliary contact degradation can also lead to failure over time.