Athena - Model Series 19P - Single Phase Compact SCR Power Controls - Brochure
Athena’s 19 and 39 controls are available as zero voltage switched controls (19Z and 39Z) and phase angle fired controls (19P and 39P) that can be used for control of resistive heater loads. The controls provide capacity up to 80 Amps, and extends heater life while eliminating thermal shock.