Anacon Power & Controls SCR Controller's are designed to offer proven solutions to both Phase Angle and Burst Fire applications. Our Burst Fire SCR Controllers operate by varying the duty cycle of an SSR's control input.  The power delivered to the load is proportional to the command input signal from four selectable time bases. (200ms, 1 sec, 10 sec & 100 sec.) SCR Controllers allow you to apply more precise control to any heater application, regardless of the type of heater elements you choose.