Mastering Mini Contactors: Everything you need to know about Mini Contactor

What are mini contactors? 

They are space-optimized control products for switching resistive or motor loads. ABB mini contactor and Schneider mini contactor are ideally suited for applications where space is at a limit. They are the flattest on the market and can be used in special modular and compact applications. 

The small dimensions, a wide range of coil supplies, and various versions within the model range provide customers with high flexibility in use for applications up to 20A resistive loads and motor loads up to 5.5 kW. 

How does contactor work?

Contactors are electrical devices used for switching circuits on and off. While they share similarities with relays, there's a fundamental difference between them. Contactors are primarily associated with applications that require high current capacity, whereas relays are typically utilized for lower current scenarios. These devices are compact and easily mountable in the field. These devices frequently incorporate numerous contacts, typically in a mostly open state. When the contactor coil receives power, it energizes the contacts, supplying operating power to the load. Contactors are particularly popular for use with electric motors.

Learn more: Differences Between a Contactor and a Relay

Why choose contactors instead of switches? 

Contactors are preferred over switches or relays for their ability to handle higher current capacities, power cycles, durability in demanding environments, remote control capability, and cost-effectiveness compared to using multiple switches or relays. There is also a built-in safety feature such as overload protection. 

Mini Contactors vs Standard Contactors 

Size and Form Factor:
Standard contactors are typically larger in size and designed for heavy-duty applications where high power ratings are required.
Mini contactor, on the other hand, are more compact and lightweight, making them ideal for installations where space is limited or weight restrictions apply.

Cost and Affordability:

Miniature contactors can offer cost savings over typical contactors. The reduced size can lead to reduced cost, especially in control panels. 

Applications of Mini Contactors

A contactor is mainly used for switching motors, building automation systems, and applications including use in machines. Applications of Mini Contactors used for Blinds, Coffee machines, Washing machines, Sawing machines, Industrial door control, PCB board, Air conditioning, Heatings, Vending machines, Water heaters, Pump stations, Railway applications, Household applications, Shutters, Garage door controls, and Conveyor systems.

Types of Mini Contactors 

• Standard types with screw, flat pin plug or soldering pin connections 
• Compact reversing types with safe blocking system (Screws, flat pin plugs and soldering pins)
• PLC interface types with very low power consumption 
• Wide range supply types for railway/battery applications 
• Mini contactor relays for auxiliary circuit switching (screws, flat plugs and soldering pins)

Download Mini contactors overview and applications: