In celebration of Electrician's Month, in this video I'll show you how to directly start a three-phase motor with step-by-step, wire-by-wire contactors. And pay attention, watch until the end, because I'll show you how to have the chance to receive a SCHNEIDER, STECK and ANDRA shirt as a gift. So check it out! _________________________________________________ ANDRA Online Store: https://bit.ly/loja-andra ANDRA Website: https://bit.ly/site-andra STECK Website: https://bit.ly/site-steck _________________________________________________ Receive Eletricity content directly in your email! Register using the link below: ???? https://bit.ly/cadastro-eletricity __________________________________________________ ???? Check out our content ???? ???? https://linktr.ee/Eletricity __________________________________________________ We will use this 50W 220/380V 0.68A three-phase motor coupled to this reducer that will make it rotate slower, so it will be easier to follow the tests and visualize the movement. The motor is small only for the didactic part of our class, but the concept is the same and can be used for motors of different types and powers, just choose the contactor that best meets your needs. To choose a contactor, we have to use the following formula: Ie ≥ In x 1.15 Ie means operating current. It is the current that can be interrupted by the contactor, under normal operating conditions. In our case Ie ≥ 0.68 x 1.15 Ie = 0.782A We need to look for a contactor that supports a current greater than or equal to 0.782A. This will not be complicated, because as we mentioned, our motor has a very low current. In the STECK catalog, we chose the S-K109A10 model. It is the model with the lowest capacity within this category. We could use mini contactors with lower currents, but we want to show some accessories that can only be used in models like this. Note that we have 2 indications of current Ith of 25A and Ie AC3 of 9A. Ith is the maximum current used for temperature rise tests in open air, in 8 hours under load. So let's focus on the current Ie AC3. But what does this AC3 mean? This acronym is related to the employment categories, that is, according to the use of my contactor, I must choose between AC1, AC2, AC3 or AC4. AC1: Non-inductive loads with small initial currents, such as electric heaters, resistance ovens, showers, etc. AC2: Starting and stopping, in slip ring motors. When closing, the contactor establishes the starting current close to 2.5 times the nominal current of the motor. AC3: Starting of Squirrel-cage Induction Motors, with motor shutdown in normal operation. When closing, the contactor establishes the starting current that is 5 to 7 times the nominal current of the motor. This is the most widely used category. AC4: Starting of Squirrel-cage Induction Motors with intermittent start-up maneuvers, countercurrent braking and full-speed reversal. Now that we know what we need and have chosen our contactor, we can proceed with our assembly. In the STECK catalog, we find contactors with voltages of 24V, 48V, 110V, 127V, 220V, 380V and 440V in alternating current for the coils. Let's start turning on our motor. (see the entire practical part in the video) Do you remember the gifts I mentioned at the beginning of the video? To have the chance to receive a shirt made by WA Sports, just like the official photo of the promotion on Eletricity's INSTAGRAM, tag at least 2 people and follow the profiles @schneiderelectric_design_br @steckeletrica @eletricaandra and @eletricityeletrica on Instagram. The names of the winners will be announced on October 24, 2022 on Eletricity's Instagram. Do you know where you can find contactors, relays, turn signals, buttons and everything else related to STECK signaling and control with the best cost-benefit? At ANDRA, the largest electrical materials chain in São Paulo. There are more than 10 stores spread throughout the Southeast in addition to service throughout Brazil through telesales, WhatsApp or Virtual Store. Visit “andra.com.br” and find out more. To see more videos with STECK products here on the channel, leave your suggestions in the comments. Take the opportunity to access the links in the description of this video for more details about STECK, ANDRA and the products shown in this video. Good luck and see you next time! ???? Stay tuned for #eletricity #andra and #steck ????