They are the additional control contacts for the external signals, where 20-21 Contact (\'Replacement\' source voltage contact) This can be controlled by a specific test on the \'Replacement\' source. Transfer to \'Replacement\' source occurs only if the the test passed and the contact is closed. For example: This contact can be used to test the frequency of the \'Replacement\' source voltage. Transfer to the \'Replacement\' source will only take place if the test result is within tolera...
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The two parts that make up the 29472 are: 29380..........AUTOMATIC CONTROLLER UA 380 TO 415 V......https://eshop.schneider-electric.com/product.aspx?org=21&lang=1&dist=276&prod_id=29380 + 29364......INTERFACE FOR AUTOMATIC CONTROL.......https://eshop.schneider-electric.com/product.aspx?org=21&lang=1&dist=276&prod_id=29364
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The power dissipation is as follows: parts reference 29472 (for ACP + UA Controller): = 12 watts parts reference 29352 (for IVE): = 4 watts
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