Restraint system for switchgear drawout breakers

A method of limiting movement of a circuit breaker truck assembly mounted in a frame of a switchgear system, the method comprising the step of:

• providing rail structure comprising a base coupled to at least one of the interior sidewalls of the frame;
• a first member extending from the base, the first member having an upwardly facing surface and a second surface extending generally transversely with respect to the upwardly facing surface so as to oppose a surface of the base;
• and a second member extending from the base into the interior space, the second member having a downwardly facing surface spaced from the upwardly facing surface so as to define a wheel receiving channel there-between,
• providing a circuit breaker truck assembly including a circuit breaker truck and a circuit breaker carried by the circuit breaker truck, the circuit breaker truck including exterior sidewalls with at least one wheel being mounted to at least one of the exterior sidewalls,
• inserting the at least one wheel in the wheel receiving channel so as to be slidable along the upwardly facing surface, and
• when a fault condition occurs, ensuring that the upwardly and downwardly facing surfaces limit movement of the circuit breaker truck assembly about the horizontal axis thereof and ensuring that the surface of the base and the second surface of the first member limit movement of the circuit breaker truck assembly about the vertical axis thereof.