Are Circuit Breakers Interchangeable

Is there a special one for connecting two 1 GE breakers together Is that 4 slot branch breaker style compatible with all Homeline panels?

Single-pole breakers are thinner and have a single switch for onoff positions A double-pole

two breakers in one slot Flip both of them upside down and compare the slots on them where they slap into the busbar I bet the slot is much larger on the regular

two slot Each slot on a breaker panel can hold one, single-pole 120 volt circuit A 220 volt circuit will be double-pole and take up two slots Tandem circuit breakers