![Old GE panel early 1970s, want to replace breakers with GFCI/ AFCI, which BRANDS are compatible? is this 3/4" or 1/2"? What should I be looking for when looking for compatibility and Old GE panel early 1970s, want to replace breakers with GFCI/ AFCI, which BRANDS are compatible? is this 3/4" or 1/2"? What should I be looking for when looking for compatibility and](https://preview.redd.it/old-ge-panel-early-1970s-want-to-replace-breakers-with-gfci-v0-dlzac5fc1prb1.jpg?width=640&crop=smart&auto=webp&s=390ff6287d17e5d4f1da901c12035f36be2cb6ad)
Old GE panel early 1970s, want to replace breakers with GFCI/ AFCI, which BRANDS are compatible? is this 3/4" or 1/2"? What should I be looking for when looking for compatibility and
![Siemens Q120DF Circuit Breaker, AFCI, GFCI, 20 A, 1 -Pole, 120 V, Instantaneous, Non-Interchangeable Trip, Black #VORG7195886, Q120DF Siemens Q120DF Circuit Breaker, AFCI, GFCI, 20 A, 1 -Pole, 120 V, Instantaneous, Non-Interchangeable Trip, Black #VORG7195886, Q120DF](https://www.shelllumber.com/resize?po=https%3A%2F%2Fosofimages.s3.us-east-2.amazonaws.com%2FZOOM%2F7195886_HR.jpg&bw=550&bh=550)
Siemens Q120DF Circuit Breaker, AFCI, GFCI, 20 A, 1 -Pole, 120 V, Instantaneous, Non-Interchangeable Trip, Black #VORG7195886, Q120DF
Adding Accessories to 3VA Circuit Breaker referencing Circuit Breaker Compatibility Chart – AWC, Inc.
![Eaton Corporation Br270 Double Pole Interchangeable Circuit Breaker, 120/240V, 70-Amp : Amazon.ca: Tools & Home Improvement Eaton Corporation Br270 Double Pole Interchangeable Circuit Breaker, 120/240V, 70-Amp : Amazon.ca: Tools & Home Improvement](https://images-na.ssl-images-amazon.com/images/I/51l+20FMzLL._AC_UL600_SR600,600_.jpg)