ISO 1033:1975

Aircraft — Dimensions for general purpose push-pull three-pole circuit-breakers

Specifies the dimensions of breakers of ratings up to and including 35 A. The dimensions of the breakers and of the part projecting through the mounting panel, shall be as shown in figure 1. The holes in the panel for mounting the breaker shall be as shown in figure 2. The small panel hole may be used to prevent rotation of the breaker.