A connection apparatus and a circuit breaker compartment for circuit breaker of a medium voltage switchgear, the connection apparatus comprising: - an electrical link (300, 320) for a phase of the medium voltage switchgear; and - a cable connection box (200, 240) for the phase of the medium voltage switchgear; wherein, the electrical link is configured to connect to the circuit breaker compartment; wherein, the cable connection box is configured to connect to the electrical link; wherein, the cable connection box comprises three or more cable connection sockets for the phase of the medium voltage switchgear in a zig zag arrangement; wherein, the electrical link and the cable connection box are configured such that when the electrical link is connected to the circuit breaker compartment and the cable connection box is connected to the electrical link, a rear wall (201, 241) of the cable connection box faces a wall of the circuit breaker compartment and the three or more cable connection sockets face away from the wall of the circuit breaker compartment; and wherein a cable connection socket of the three or more cable connection sockets that is adjacent to the electrical link (300, 320) when the cable connection box (200, 240) is connected to the electrical link has a lateral hole, and wherein the cable connection box is configured to be connected to the electrical link via a screw extending through the lateral hole. - an electrical link (300, 320) for a phase of the medium voltage switchgear; and - a cable connection box (200, 240) for the phase of the medium voltage switchgear; wherein, the electrical link is configured to connect to the circuit breaker compartment; wherein, the cable connection box is configured to connect to the electrical link; wherein, the cable connection box comprises three or more cable connection sockets for the phase of the medium voltage switchgear in a zig zag arrangement; wherein, the electrical link and the cable connection box are configured such that when the electrical link is connected to the circuit breaker compartment and the cable connection box is connected to the electrical link, a rear wall (201, 241) of the cable connection box faces a wall of the circuit breaker compartment and the three or more cable connection sockets face away from the wall of the circuit breaker compartment; and wherein a cable connection socket of the three or more cable connection sockets that is adjacent to the electrical link (300, 320) when the cable connection box (200, 240) is connected to the electrical link has a lateral hole, and wherein the cable connection box is configured to be connected to the electrical link via a screw extending through the lateral hole. wherein, the electrical link is configured to connect to the circuit breaker compartment; wherein, the cable connection box is configured to connect to the electrical link; wherein, the cable connection box comprises three or more cable connection sockets for the phase of the medium voltage switchgear in a zig zag arrangement; wherein, the electrical link and the cable connection box are configured such that when the electrical link is connected to the circuit breaker compartment and the cable connection box is connected to the electrical link, a rear wall (201, 241) of the cable connection box faces a wall of the circuit breaker compartment and the three or more cable connection sockets face away from the wall of the circuit breaker compartment; and wherein a cable connection socket of the three or more cable connection sockets that is adjacent to the electrical link (300, 320) when the cable connection box (200, 240) is connected to the electrical link has a lateral hole, and wherein the cable connection box is configured to be connected to the electrical link via a screw extending through the lateral hole.