Auxilliary Relays Block VAA23

Features :-
• Simple and robust construction
• Positive action and high mechanical stability
• Heavy duty contact available, where required
• Slugged relays with delay on operation / reset available in ac/dc version.

Customer Benefits :-
• Auxiliary relay
• Simple and robust construction
• More number of contact configurations available with self/hand reset facility
• Operation annunciation in the form of flag
• Completely dust proof by IP5X class protection

Application :-
Control, alarm, indication and other auxiliary duties in ac or dc systems.

VAA relays are voltage operated relays. The relays are attracted armature units of compact design with positive action and a high degree of mechanical stability. The relays can be supplied with self, or hand reset contacts and changeover contacts. Standard contacts are of silver/copper alloy. They are shaped and positioned to ensure a reliable and low resistance normally open or normally closed contact. Standard VAA 11/21 relays are suitable
for ac/dc supply and standard VAA 13/23 relays are suitable for dc supply only. VAA23 are double pole versions of VAA13 respectively. When it is necessary to break heavy or highly inductive dc loads, heavy duty magnetic blow out type contacts can be provided. These contacts use the magnetic field of a small permanent magnet to force the arc onto the arcing horns away from the contact tips. The breaking capacity of the heavy duty contact.

The standard VAA relays provide only instantaneous self or hand reset contacts. To ensure a longer operating life, the tips of the silver contacts have a domed profile, the optimum design for the repetitive operation duties of industrial applications. Although the standard designs are suitable for dc and full-wave rectified ac systems only, alternative versions for ac operation are available.