![General | 45 amp contactor won't stay closed | Practical Machinist - Largest Manufacturing Technology Forum on the Web General | 45 amp contactor won't stay closed | Practical Machinist - Largest Manufacturing Technology Forum on the Web](https://www.practicalmachinist.com/forum/data/attachments/13/13456-9037bded950839e34ee21f05f06356bc.jpg)
General | 45 amp contactor won't stay closed | Practical Machinist - Largest Manufacturing Technology Forum on the Web
![Electronics | Free Full-Text | Two-Level Excitation Current Driver to Reduce the Driving Power of an Electromagnetic Contactor Electronics | Free Full-Text | Two-Level Excitation Current Driver to Reduce the Driving Power of an Electromagnetic Contactor](https://www.mdpi.com/electronics/electronics-13-00916/article_deploy/html/images/electronics-13-00916-g001.png)
Electronics | Free Full-Text | Two-Level Excitation Current Driver to Reduce the Driving Power of an Electromagnetic Contactor
![Is it allowed to energize a contactor coil from the voltage source coming through the contactor? Is it the same for relays. Like in the picture - Quora Is it allowed to energize a contactor coil from the voltage source coming through the contactor? Is it the same for relays. Like in the picture - Quora](https://qph.cf2.quoracdn.net/main-qimg-2afbd20d5763622bfde8bbccde55783b.webp)
Is it allowed to energize a contactor coil from the voltage source coming through the contactor? Is it the same for relays. Like in the picture - Quora
![General | 45 amp contactor won't stay closed | Practical Machinist - Largest Manufacturing Technology Forum on the Web General | 45 amp contactor won't stay closed | Practical Machinist - Largest Manufacturing Technology Forum on the Web](https://www.practicalmachinist.com/forum/data/attachments/13/13455-594c0bbebe52ce36d083b34e1c1d5646.jpg)