The 074724 Tutco SureHeat Max Air Heater is designed for 6000 watts of power, 240 voltage three phase, and a maximum amperage of 14.5 amps.

The 074726 Tutco SureHeat Max Air Heater is designed for 6000 watts of power, 480 voltage three phase, and a maximum amperage of 7.2 amps.

The 074727 Tutco SureHeat Max Air Heater is designed for 10000 watts of power, 240 voltage single phase, and a maximum amperage of 41.7 amps.

The 074731 Tutco SureHeat Max Air Heater Is Designed For 10000 Watts Of Power, 480 Voltage Three Phase, And A Maximum Amperage Of 12 Amps.

The 074835 (also know as F074835) is an inlet temperature limi circuit for S1 type K thermocouple for the SureHeat Jet heaters 074718 and 074719. This relay goes with the 074829 exit temperature controller for the S2 type K thermocouple also for the SureHeat Jet heaters.