ABB WRB-600 Contactor Mechanical Latching Block for use with AF and NF Series Contactors

1SBN040100R1012

The ABB WA4 mechanical latching unit for AF09 to AF96 contactors and NF contactor relays ensures that the contactor or contactor relay remains switched on even if there is a lack or a failure of voltage. It contains a mechanical latching device with electromagnetic impulse unlatching (AC or DC) or manual unlatching.

• Screw terminals
• Clipped onto the front face of the 1-stack contactor