Contactor

With two decades as a trusted expert in refrigeration compressors and their critical accessories, ascompressors.com understands that precise and safe electrical control is paramount. The contactor is a fundamental electro-mechanical switching device, indispensable for safely starting, stopping, and protecting the high-current motors found in refrigeration compressors and other HVAC equipment. As your dedicated supplier, we offer a comprehensive range of high-quality contactors designed for the rigorous demands of commercial and industrial cooling systems.

A contactor acts as an electrically controlled switch used for switching an electrical power circuit. Unlike relays, which are typically used for lower current circuits, contactors are designed to handle high currents required by motors. In refrigeration, they are crucial for connecting and disconnecting the power supply to the compressor motor, condenser fan motors, and other high-load components, ensuring controlled operation and providing a layer of safety against overcurrents and voltage fluctuations.

Core Contactor Types & Key Products We Supply:

Our extensive inventory includes a variety of contactors, carefully selected for their durability, electrical specifications, and reliability in refrigeration and HVAC applications. We focus on providing solutions that offer seamless integration and robust performance:

• Definite Purpose Contactors (DP Contactors): These are specifically designed for the unique needs of HVACR applications, offering compact sizes, multiple pole configurations (e.g., 1-pole, 2-pole, 3-pole, 4-pole), and various ampere ratings. DP contactors are highly reliable for switching compressor motors, condenser fan motors, and heating elements. We stock models with different coil voltages (e.g., 24V, 120V, 208/240V, 480V) to match diverse control circuits.

• IEC and NEMA Rated Contactors: For more heavy-duty industrial refrigeration and large HVAC systems, we supply contactors conforming to International Electrotechnical Commission (IEC) and National Electrical Manufacturers Association (NEMA) standards. These are robust, long-lasting units suitable for frequent switching and demanding environments, offering higher current ratings and often modular accessory options.

• Magnetic Contactors: These are the most common type, using an electromagnet to operate the switch contacts. We provide magnetic contactors with various coil types and auxiliary contacts for signaling and interlocking with other control components.

• Solid-State Contactors: For applications requiring extremely fast switching, silent operation, or very high switching frequency, we can source solid-state contactors. These use semiconductors instead of mechanical contacts, offering extended lifespan in specific scenarios.

We also supply essential contactor accessories, including auxiliary contact blocks, shunt trips, mechanical interlocks, and replacement coils, enabling customization and extending the functionality or lifespan of your control systems.

Essential Applications & Industries for Our Contactors:

The reliable power switching provided by our high-quality contactors is vital across a broad spectrum of commercial and industrial cooling applications:

• Refrigeration Compressors: Safely controlling the power supply to reciprocating, scroll, screw, and hermetic compressor motors in all types of refrigeration units.

• HVAC Systems: Switching main power to air conditioning units, heat pumps, central chillers, and large air handling units.

• Condenser and Evaporator Fans: Controlling the motors for fans that ensure efficient heat exchange in refrigeration and AC systems.

• Pumps & Motors: Any application in industrial cooling requiring reliable on/off control of electric motors for pumps, blowers, or other auxiliary equipment.

• Commercial & Industrial Facilities: Used in supermarkets, restaurants, cold storage warehouses, food processing plants, data centers, and manufacturing facilities to manage power to cooling infrastructure.

Innovation, Reliability, and Unrivaled Expertise:

At ascompressors.com, our 20 years in the refrigeration field have taught us that reliable electrical control is non-negotiable for system safety and efficiency. A high-quality contactor protects your valuable motors from electrical stresses and ensures seamless operation. By choosing our contactors, you're investing in enhanced system reliability, reduced electrical downtime, and improved overall safety for your refrigeration or HVAC equipment. Our technical team possesses the deep knowledge required to assist you in selecting the ideal contactor for your specific application, ensuring proper sizing, compatibility, and robust performance. Trust us for precise and safe power control in your cooling solutions.