Modular Contactor

ALION Modular Contactors can be used in industrial, commercial, or agricultural settings. They are also common in homes and hospitals. Most often, modular contactors are used to control lights, air conditioning, heating pumps, and the like. Our modular contactors have a current rating of 100A and come with support for DIN mounting. You can easily install them into your electrical panel.

ALION Modular Contactors have a standard 17.5-millimeter construction, which makes them flexible enough to meet all your needs. Also, the number of poles can range from one to four, and the contactor supports N/O and N/C contact states.

BCH8-20M-2P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-25M-2P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-25M-4P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-40M-2P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-63M-2P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-63M-4P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-100-2P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-100M-4P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-100M-4P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-63M-4P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-25M-4P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-100-2P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-63M-2P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

BCH8-40M-2P Modular Contactor

BCH8s series household AC contactors are suitable for using in the circuits up to the...

A modular contactor is a great choice for those of you working with high-current load devices. But why? Well, unlike relays, a contactor has features that control the arc produced when you interrupt a heavy motor current.

What Is a Modular Contactor?

A contactor is an electronically controlled switch that you can use to switch an electrical power circuit. Unlike regular relays, contactors are designed so that can you directly connect them to high-current load devices. What’s more, a modular contactor almost always has a normally open contact.

A modular contactor will not interrupt a short circuit current, unlike a protection relay. It has three main components:

  1. – Contacts
  2. – Electromagnet or coil
  3. – Enclosure

Now, the contacts are the parts of the contactor that carry the current. They include power and auxiliary contacts, as well as contact springs. The coil is what gives the modular contactor the power to close the contacts.

And finally, the enclosure is a frame that houses the contacts and the coil. Most frames are made out of insulating materials and thermosetting plastic to protect everything inside. They also work great as insulators, so you don’t have to worry about your components overheating.

Types of Modular Contactors

Now, the biggest difference between contactors is in the number of poles they have. You can get them with 1–4 poles. But what’s the difference? Well, a 1-pole contactor has only one set of contacts that it opens and closes and a shunt that allows it to keep the circuit.

On the other hand, a 2-pole contactor doesn’t have that same shunt. Some of you might be wondering “Can you replace a 1-pole with a 2-pole?” In theory — yes, you can. But we wouldn’t recommend it because you would have to break the legs off the contacts. When in doubt, stick to what the manufacturer already put in place.

Applications of Modular Contactors

The applications of modular contactors are almost endless and you can use them for commercial, industrial, and agricultural purposes. The most popular reason why people buy them is to control light fixtures. You can use them to provide central lighting for your office or retail building.

If you want to reduce your power consumption, you can get modular latching contractors, which have two coils. But that’s not all modular contactors are good for. They can also work great if you have a magnetic starter. You can also get them if you need help controlling your HVAC systems, thermal evaporators, and other electrical loads.