Over voltage mcb eaton pop270

Kino88 · Apr 19, 2014

Hi guys, i just bought a over voltage mcb model eaton pop270 together with a 2pole main switch and would like to verify how to connect it? basically the over voltage mcb connects mechanically to the main switch and trips when the incomer exceeds 230v obviously there is some tolerance. thanks

davesparks · Apr 19, 2014

I expect it's an over voltage trip rather than an MCB.
It should have come with instructions on how to install it correctly.
Although I'm not familiar with aux modules like that working with main switches, they normally fit to MCBs or MCCBs.

Engineer54 · Apr 20, 2014

davesparks said:
I expect it's an over voltage trip rather than an MCB.
It should have come with instructions on how to install it correctly.
Although I'm not familiar with aux modules like that working with main switches, they normally fit to MCBs or MCCBs.

It is indeed a aux over voltage trip module, and will only work when attached to a protective device, ...it certainly won't operate a standard CU/DB main switch (isolator switch) on overvoltage, that's for sure!! ...lol!!

Kino88 · Apr 20, 2014

Engineer54 said:
It is indeed a aux over voltage trip module, and will only work when attached to a protective device, ...it certainly won't operate a standard CU/DB main switch (isolator switch) on overvoltage, that's for sure!! ...lol!!

It is a trip device that works when connected to a 2 pole mcb. It measures the voltage between live and neutral and trips the 2 pole mcb if the voltage exceeds 230v by a percentage... It is a single module, I think that the live incomer is first passed through the the over voltage module and goes to the input of the 2 pole mcb. The neutral goes directly to the 2 pole mcb.

davesparks · Apr 20, 2014

It won't work with a main switch, it will only work with an MCB

Marvo · Apr 20, 2014

Kino88 said:
It is a trip device that works when connected to a 2 pole mcb. It measures the voltage between live and neutral and trips the 2 pole mcb if the voltage exceeds 230v by a percentage... It is a single module, I think that the live incomer is first passed through the the over voltage module and goes to the input of the 2 pole mcb. The neutral goes directly to the 2 pole mcb.

I don't like your proposed connection circuit, you really should confirm with the supplier or manufacturer before connecting it. The POP installs alongside the SP+N (2-POLE) MCB and is mechanically interlocked. The POP merely senses the L and N to establish under or over voltage, the MCB load current does not pass through it. http://www.eaton.se/ecm/groups/public/@pub/@sweden/documents/content/pct_399655.pdf Page36