WB75-A 415-440V 50Hz / 440-480V 60Hz / 415-440V DC is a mechanical latching unit used for converting standard contactors into latched contactors. The WB75-A block contains a mechanical latching device with electromagnetic impulse unlatching (AC or DC) or manual unlatching. After closing, the contactor continues to be held in the closed position by the latching mechanism should the supply voltage fail at the contactor coil terminals. Contactor opening can be controlled: • electrically by an impulse (AC or DC) on the WB75-A block coil. (the coil is not designed to be permanently energized) • manually by pressing the pushbutton on the front face of the WB75-A block.
Speed Variation and Motor Starting
WB75-A 415-440V 50Hz 440-480V 60Hz 415-440V DC Mechanical Latching Unit
Nortécnica Ref:
EAN:
3471522121981
Description
Technical Information
Attributes
Type of accessoryspare part
Mechanical locking
Accessory
-
Spare part
-
Brands
ABB
Descrição Longa
WB75-A 415-440V 50Hz / 440-480V 60Hz / 415-440V DC is a mechanical latching unit used for converting standard contactors into latched contactors.
The WB75-A block contains a mechanical latching device with electromagnetic impulse unlatching (AC or DC) or manual unlatching.
After closing, the contactor continues to be held in the closed position by the latching mechanism should the supply voltage fail at the contactor coil terminals.
Contactor opening can be controlled:
• electrically by an impulse (AC or DC) on the WB75-A block coil.
(the coil is not designed to be permanently energized)
• manually by pressing the pushbutton on the front face of the WB75-A block.