Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

MPCB without auto restart after power failure

Created by: Sreem at: 9/28/2019 3:16 PM (6 Replies)

Rating (0)

Thanks 0

7 Entries

9/28/2019 3:16 PM	Rate (0)
Sreem Posts: 4 Rating: (0)	We like to use an MPCB for a 3HP motor. Do we need a motor starter inaddition to MPCB? Does the motor start automatically after a power failure if we use a MPCB, which I do not want for safety reasons?
Sreem Posts: 4 Rating: (0)
Suggestion To thank Quote Answer

9/29/2019 6:51 AM	Rate (0)
PISCEAN 2010 Diamond Member Joined: 4/23/2010 Last visit: 12/31/2023 Posts: 8092 Rating: (878)	MPCB = Motor Protection Circuit Breaker. In addition to MPCB, you need contactor + Push button station to switch ON & OFF power supply & can not use MPCB to start/stop motor. HTH.

Suggestion To thank Quote Answer

9/29/2019 9:23 AM	Rate (0)
Sreem Posts: 4 Rating: (0)	PISCEAN 2010 MPCB = Motor Protection Circuit Breaker. In addition to MPCB, you need contactor + Push button station to switch ON & OFF power supply & can not use MPCB to start/stop motor. HTH. Can we have the feature of motor not getting restarted after a power failure, if we connect a contactor and a push button station in addition to MPCB? Sreem
Sreem Posts: 4 Rating: (0)
Suggestion To thank Quote Answer

9/29/2019 1:07 PM	Rate (0)
PISCEAN 2010 Diamond Member Joined: 4/23/2010 Last visit: 12/31/2023 Posts: 8092 Rating: (878)	Yes. When power fails, contactor latch/hold signal gets cut off so the contactor. When power gets restored, user/operator needs to press START push buton so that contactor gets switch ON & gets hold thru hold contact. User/operator can stop the motor by pressing STOP button as per requirement. HTH

Suggestion To thank Quote Answer

9/29/2019 1:30 PM	Rate (0)
Sreem Posts: 4 Rating: (0)	PISCEAN 2010 Yes. When power fails, contactor latch/hold signal gets cut off so the contactor. When power gets restored, user/operator needs to press START push buton so that contactor gets switch ON & gets hold thru hold contact. User/operator can stop the motor by pressing STOP button as per requirement. HTH Thank you very much. Is this "contactor latch.hold signal" feature common for all the contactors? please help me if I need use a specific type otherwise.
Sreem Posts: 4 Rating: (0)
Suggestion To thank Quote Answer

9/29/2019 2:07 PM	Rate (0)
Ste39 Platinum Member Joined: 1/21/2013 Last visit: 10/23/2024 Posts: 4620 Rating: (708)	Sreem PISCEAN 2010 Yes. When power fails, contactor latch/hold signal gets cut off so the contactor. When power gets restored, user/operator needs to press START push buton so that contactor gets switch ON & gets hold thru hold contact. User/operator can stop the motor by pressing STOP button as per requirement. HTH Thank you very much. Is this "contactor latch.hold signal" feature common for all the contactors? please help me if I need use a specific type otherwise. Hello, look the drawing at page 12, is with a 400V coil but you can also with other voltage: http://www.siemens.co.in/pool/about_us/s14232---raja-starter-cataloge-17-11-17.pdf

Suggestion To thank Quote Answer

9/29/2019 2:18 PM	Rate (0)
Sreem Posts: 4 Rating: (0)	Ste39 Sreem PISCEAN 2010 Yes. When power fails, contactor latch/hold signal gets cut off so the contactor. When power gets restored, user/operator needs to press START push buton so that contactor gets switch ON & gets hold thru hold contact. User/operator can stop the motor by pressing STOP button as per requirement. HTH Thank you very much. Is this "contactor latch.hold signal" feature common for all the contactors? please help me if I need use a specific type otherwise. Hello, look the drawing at page 12, is with a 400V coil but you can also with other voltage: http://www.siemens.co.in/pool/about_us/s14232---raja-starter-cataloge-17-11-17.pdf It has been a great help. Thank you.
Sreem Posts: 4 Rating: (0)
Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Follow us on