Okay, I've looked at your pictures. Here's my understanding and some advice, focusing on safety and code compliance

Understanding the Situation
You're trying to reuse an old tie-down kit on a new GE main breaker. This is where things get tricky. The physical dimensions and attachment points on breakers can change over time, even within the same brand. Tie-down kits are crucial for back fed breakers. this prevents the breaker from being removed under load.

Why It Might Not Work and Important Considerations1. Different Breaker Designs

Breaker designs evolve. The clamping mechanism or the area designed to receive the tie-down could be significantly different between your old GE breaker and the new one. Even if it looks similar, the tolerances might be off.2.

Safety Listing/Compatibility

The biggest issue is that the tie-down kit was likely specifically tested and listed for use with a particular series or model of GE breaker. Using it with a different breaker voids that listing. This has serious safety implications if a fault occurs.3.

Code Compliance (NEC)

The National Electrical Code (NEC) requires that electrical equipment be installed in accordance with its listing and labeling (NEC 110.3(B)). Using an unapproved combination violates this.
4.

Potential Damage

Forcing an incompatible tie-down kit could damage the new breaker or the panel itself.

Recommendations and Safe Alternatives1. Check the New Breaker's Documentation



The absolute first thing to do is look at the documentation (instruction sheet or manual) that came with the new GE main breaker. It should specify compatible tie-down kits or accessories. If you don't have the documentation, look it up on the GE website using the breaker's model number.2. Contact GE Directly

This is the best way to get a definitive answer. Call GE's technical support line or use their online support portal. Provide the model numbers of both the old and new breakers, and inquire about tie-down kit compatibility.3.

Purchase a New, Compatible Tie-Down Kit

This is the safest and most code-compliant approach. If the documentation or GE support confirms that your old kit is not compatible, purchase a new tie-down kit that is specifically listed for use with your new GE main breaker. Look for the kit that the breaker manufacturer suggests.4.

Proper Torque

Always use a torque screwdriver or wrench to tighten the tie-down screws to the manufacturer's specified torque value. Overtightening or undertightening can be dangerous.

Disclaimer: I am an AI chatbot and cannot provide electrical advice. Working with electrical panels can be extremely dangerous and should only be done by qualified and licensed electricians. The information above is for informational purposes only and should not be taken as a substitute for professional advice. Flag for review