What is an ABB contactor?
What is an ABB contactor?
An ABB Contactor is an electrically controlled switch used for switching over a power circuit, similar to a relay except with higher ampere ratings. An ABB contactor is controlled by a circuit which uses a smaller degree of power compared to the circuit being switched.
What are the different types of contactors?
There are different types of contacts in a contactor, and they are; auxiliary contact, power contact, and contact spring. The power contact has two types that are; stationary and movable contact.
How many amps does a 24V contactor coil draw?
The relay I am looking at has a 24V coil and it has a resistance of 350 ohms. 24/350=. 07 amps.
Where are contactors used?
A contactor is a special type of relay used for switching an electrical circuit on or off. They are most commonly used with electric motors and lighting applications.
What is AC1 and AC3 contactor?
The difference between AC1 and AC3 contactors is AC1 contactors are used for general purpose resistive loads but AC3 contactors are used for high inductive, squirrel cage motor switching. The rating of AC3 is lower than AC1. Because AC3 switches high inrush currents.
How do you size a contactor?
There are 5 primary things to consider when determining how to size a contactor for your application:
- Full Load Amperage at Line Voltage. The first item to consider is the load, which is measured in amperes.
- Contactor Coil Voltage.
- IEC Utilization Categories.
- Reversing vs Non-Reversing Contactors.
- Auxiliary Contacts.
What is A2 on a contactor?
What Do A1 and A2 Mean on a Contactor? A1 and A2 on a contactor typically refer to either end of the electromagnetic coil assembly. Most contactor manufacturers use A1 and A2 to designate the two terminals connecting electrical power to the contactor’s magnetic coil.
Can AC contactor be used for DC?
If we put the AC contactor in the DC circuit, it will burn out because of the excessive current. Because there is inductive reactance in alternating current but not in direct current.
What are the different types of ABB contactors?
ABB ABB ABB ABB AL / TAL / AE / TAE / AF..RT Contactors Technical Data Mounting Characteristics Contactor types: 9 12 16 26 30 40 45 50 63 75 Mounting distancesContactors can be assembled side by side except TAL..RT at 20°C < θ < 55°C, see table below.
Why ABABB contactors?
ABB offers a comprehensive selection of contactors for simple and extreme application as well as products with specific purposes. The AF contactor technology revolutionizes how we use contactors and allows use in all parts of the world and in all network conditions.
Why choose ABB’s hum-free installation contactors?
ABB’s hum-free installation contactor designs offer a wide range of ratings from 16 A to 100 A. Widely used in buildings for switching and controlling lighting, heating,… ABB’s contactor relays offering features products of technological advancement as well as products with specific purposes.