Contribution margin is a measure of operating leverage: the higher the contribution margin is (the lower variable costs are as a percentage of total costs), the faster the profits increase with sales.
What is a snap switch also known as Snap Disc or snap action thermostat? Snap Disc, or snap switch thermostats are bimetal mechanical thermostats that function via the thermal expansion and contraction of a bimetal disc that âsnapsâ from a convex to a concave shape at a set temperature. When the disc âsnapsâ, it either completes or interrupts a circuit.
A flush-type snap switch mounted in a box that is flush with the wall surface, or projects therefrom, is required to be installed so the mounting yoke or strap of the switch is seated against the box. Metal enclosures used for switches or circuit breakers must be properly grounded.