• Replacement socket plate for Global circuit design trainer models PB-505
• Uses 4 UBS-100 breadboards mounted to the aluminum backplate
• Velcro fasteners mounted to the aluminum backplate

The PB-3 is a replacement breadboard socket for use with PB-503 & PB-503C Circuit Design Workstations. The PB-3 has a breadboarding area consisting of 2520 tie-points secured to a transparent plexiglas plate. The transparent plate allows for easy viewing of the breadboarding connections. The PB-3 is secured to the trainer with velcro.