Today we are spotlighting the General Electric Secondary Disconnect Block for Type VB and VB1 Powervac Circuit Breakers. This is the black power plug that is mounted on the back of the breaker that mates with another in the cell to bring control power to open and close the breaker. In our day to day sales of breakers, we have noticed an inherent problem with this part cracking at the ends in the area of the guide holes. Closer inspection revealed the issue to be the voids in the original mold that allowed the plastic to crack when under day to day stress.
Block in cell Block in breaker Damaged block
We’ve eliminated this issue with our fiber reinforced material and designed a mold that eliminates the voids for a much stronger product. The most common application that we’ve seen for this product is to replace cracked/damaged blocks that are discovered during routine or periodic maintenance. After de-energizing the circuit, simply mark the wires according to the numbering on the front of the block, pop the contacts out with our contact removal tool, re-insert the contacts in the correct order and reinstall the block. A quick simple fix and one you should never have to do again, at least not on this unit. In other cases, when wiring needs to be changed or replaced we offer replacement contacts with the block and we also offer the blocks with the wiring harness installed. We keep a limited supply, approximately 10-12 of these parts, on hand for same or next day shipments and we can ramp production up for more if you are anticipating issues with an upcoming outage.
NPE’S GE VB VB1 Powervac Secondary Disconnect New Aftermarket Parts List:
P/N 100002954 VB VB1 SECONDARY DISCONNECT BLOCK (BREAKER SIDE)
P/N 100002974 VB VB1 SECONDARY DISCONNECT BLOCK WITH CONTACTS (BREAKER SIDE)
*OEM 0209B3579G001 block OEM 0282A2081P001 contact
P/N 100002984 VB VB1 SECONDARY DISCONNECT BLOCK WITH 4 FT. OF WIRING HARNESS (BREAKER SIDE)
P/N 100003244 VB VB1 SECONDARY DISCONNECT BLOCK CONTACT (BREAKER SIDE)
P/N 100003014 VB VB1 SECONDARY DISCONNECT BLOCK (CELL SIDE)
P/N 100003024 VB VB1 SECONDARY DISCONNECT BLOCK WITH CONTACTS (CELL SIDE)
*OEM 0209B4052G009 block OEM 0282A2081P002 contact
P/N 100003034 VB VB1 SECONDARY DISCONNECT BLOCK WITH 8 FT. WIRING HARNESS (CELL SIDE)
P/N 100003254 VB VB1 SECONDARY DISCONNECT CONTACT (CELL SIDE)
P/N 100002994 VB VB1 SECONDARY DISCONNECT CONTACT REMOVAL TOOL
*OEM part numbers are listed for identification purposes only. They are not manufactured by OEM.
This is just one of the many solutions to day to day issues that NPE can help you with. For more, visit https://www.npeinc.com/aftermarket-parts. If you still don’t see what you are looking for, give us a call and we’ll try to custom engineer a solution for just for you. We make our aftermarket parts better, stronger and get them to you faster!
Watch for NPE’s next spotlight in our Product Improvement Center’s series of blogs.