Onesto offers a range of electrical control solutions: modular automatic and manual contactors. Designed to meet the diverse needs of modern industry, these contactors offer superior performance, flexibility and reliability. From automation systems to manual control applications, Onesto's contactors provide precise switching capabilities to ensure optimal electrical control in a variety of settings.

Working Principle:

The working principle of both automatic and manual AC contactors is based on electromagnetic switching. When an electric current flows through the coil of the contactor, it generates a magnetic field that attracts the contactor's movable contacts, closing the circuit and allowing current to flow. In the case of automatic contactors, this process is controlled by an external signal or automation system, while manual contactors require physical manipulation to open or close the contacts.

Application:

Automatic AC contactors are commonly used in automated systems and remote control applications. They find extensive use in industries such as manufacturing, industrial automation, HVAC, and lighting control. These contactors are utilized in motor control circuits, power distribution panels, and control panels where remote or automated control is required.

On the other hand, manual AC contactors are ideal for scenarios that require direct human control or emergency shutdown functionalities. They are often used in manual control stations, emergency stop circuits, and situations where immediate electrical disconnection is necessary. Manual contactors are prevalent in industries such as machinery control, construction, marine applications, and emergency power systems.

Automatic Contactors:

1.Robust Engineering: These contactors are built with robust engineering to ensure durability and reliability in various applications.
2.Configurations: They are available in 1P, 2P, 3P, and 4P configurations, allowing for adaptation to different circuit requirements.
3.Voltage Compatibility: The contactors are rated for both 250V and 400V AC systems, making them compatible with different power supply setups.
4.Control Circuit Voltage Options: They offer versatility in controlling electrical circuits with control circuit voltage options of 24V, 110V, and 230V.
5.Insulation and Impulse Withstand Voltage: These contactors have a rated insulation voltage of 500V and a rated impulse withstand voltage of 4kV, ensuring safety and protection against electrical surges.
6.Reliable and Safe Operation: Onesto's contactors are highly reliable and safe to use, meeting the specific needs of AC-7a and AC-7b utilization categories.
7.Compliance with Standards: Onesto's contactors comply with the IEC/EN61095 standard, ensuring their adherence to industry guidelines.

Manual Contactors:

1. Versatile Configurations: The contactors are available in 1P, 2P, 3P and 4P configurations to meet different circuit requirements.
2. Wide Voltage Compatibility: The contactors are rated at 250V/400V AC and can be used in a variety of power settings, thus increasing their applicability.
3. Efficient Current Handling: The contactors have a rated current range of 6A to 63A to efficiently handle electrical loads in this range.
4. Flexible Control Circuit Voltage Options: Control circuit voltage options (24V, 110V and 230V) are available for easy integration and adaptation to various control systems.
5. Enhanced Electrical Insulation: The contactors are rated at 500V to ensure effective insulation, reducing the risk of electrical failure and ensuring safe operation.
6. Protection against voltage surges: The contactors are rated at 4kV surge withstand voltage, providing strong protection against transient voltage spikes and improving overall durability.
7. Compliance with use categories: The contactors comply with use categories AC-7a and AC-7b and are designed to handle specific types and strengths of electrical loads, ensuring reliable and safe performance.
8. Compliance with standards: The contactors comply with the IEC/EN61095 standard, highlighting their compliance with industry guidelines and ensuring reliable and safe operation.

Distinguishing Features:

The key difference between the Automatic and Manual Contactors lies in the method of control. While the Automatic Contactors are designed for automated systems and remote control applications, the Manual Contactors are ideal for scenarios that require direct manual control or emergency shut-off functionalities. 

Both the Automatic and Manual Contactors provide the following benefits:

• Precise Electrical Control: With reliable switching capabilities, these contactors ensure accurate control of electrical circuits, contributing to optimal system performance and stability.
• Adaptability to Diverse Environments: Whether it's motor control, lighting systems, or industrial automation, the Modular Contactors seamlessly adapt to a wide range of applications across industries.
• Engineering Excellence: Crafted with high-quality materials and subjected to rigorous testing, these contactors deliver durability, long service life, and efficient electrical control.

Onesto's modular automatic and manual contactors enable higher performance, adaptability and safety. Whether you require automation or direct manual intervention, Onesto has the perfect contactor solution for your specific needs. Experience the future of the electrical control industry with Onesto today.