Hi. I have a question whether I can use the BZ-3 module to protect a 3-phase power supply Type TDR-240-24 ? The module contains a circuit which signals the blown fuse . According to the parameters, the rated voltage is 260V, isn't it too low for the module to be used in a 3-phase installation?...

You can use - for this there is . Since one track is for max 250 V(DC/AC) then if two phases are connected through two tracks - half the phase voltage will be deposited on one track - that is below the possible voltage....

I believe that NO The blowing of one fuse will result in a 400V phase-to-phase voltage at its contacts!

Thanks for your interest in the topic. However, I have managed to rebuild the switchgear.I have used overcurrent protection (triple S) as protection for the power supply . I think this will be a safer and more secure solution. Greetings

Can BZ-3 Module Protect 3-Phase Power Supply Type TDR-240-24?

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#1 20007520 05 May 2022 13:34

przeme przeme

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Post #1
20007520 05 May 2022 13:34

Hi. I have a question whether I can use the BZ-3 module to protect a 3-phase power supply Type TDR-240-24 ? The module contains a circuit which signals the blown fuse . According to the parameters, the rated voltage is 260V, isn't it too low for the module to be used in a 3-phase installation? There is no space in the distribution board for a normal fuse .
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#2 20008482 06 May 2022 07:54

pafciowaw pafciowaw

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20008482 06 May 2022 07:54

You can use - for this there is .
Since one track is for max 250 V(DC/AC) then if two phases are connected through two tracks - half the phase voltage will be deposited on one track - that is below the possible voltage....
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#3 20008485 06 May 2022 08:03

tos18 tos18

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20008485 06 May 2022 08:03

I believe that NO
The blowing of one fuse will result in a 400V phase-to-phase voltage at its contacts!
#4 20014522 10 May 2022 22:27

przeme przeme

Level 20

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Post #4
20014522 10 May 2022 22:27

Thanks for your interest in the topic. However, I have managed to rebuild the switchgear.I have used overcurrent protection (triple S) as protection for the power supply . I think this will be a safer and more secure solution. Greetings
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Can BZ-3 Module Protect 3-Phase Power Supply Type TDR-240-24?

Can BZ-3 Module Protect 3-Phase Power Supply Type TDR-240-24?

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