To help dissipate the heat generated within an SSR, the relays are mounted ___.

Mounting solid-state relays (SSRs) on heat sinks is essential for effectively managing the heat generated during their operation. SSRs rely on semiconductor devices, which can produce significant amounts of heat when switching electrical loads. Heat sinks increase the surface area available for heat dissipation, allowing heat to transfer more efficiently to the surrounding air.

When SSRs are mounted on heat sinks, they can maintain a more stable operating temperature, thus prolonging their lifespan and ensuring reliable performance. This is particularly important in high-load applications, where the heat generated can be substantial. Heat sinks help keep the temperature within the optimal operating range, preventing overheating that could lead to failure or reduced reliability.

Other mounting methods, such as in free air, inside an enclosure, or within insulation, would not provide the same level of thermal management. These methods may either restrict airflow and heat dissipation or increase the likelihood of temperature build-up, which could compromise the SSR's functionality. Therefore, using heat sinks is a critical practice in the installation of SSRs.