Collisions
You can enable / disable the Origin Collisions and Spring Arm Collisions features.
Origin Collisions
Enabling Origin Collisions will prevent the Origin of the UC from going through the geometry in your level.
You can find the settings in the "Origin Collisions" category.
Spring Arm Collisions
Enabling Spring Arm Collisions will automatically adjust the zoom level to prevent any geometry from going through the Spring Arm Component, between the Camera Component and the Origin.
You can find the settings in the "Spring Arm Collisions" category.