Current ratings to 70 amps Output voltage to 660 Vac AC or DC inputs 4 kV optical isolation 
DIN-rail or panel mounted 1 and 3-phase models Current ratings from 10 to 45 amps Output voltage ratings to 660 Vac AC or DC control inputs
Zero-switched or phase-angle fired Single-phase (91) or three-phase
(93) models No maintenance No relay noise I2T fuse protection For Resistive Loads Only
Zero-switched or phase-angle fired Single-phase (19) or three-phase
(39) models Extends heater life Capacity up to 80 amps For Resistive
Loads Only Series ZC/PC Contactors
All Solid-state design - no maintenance
Soft-start and voltage limit(optional
on PC)
Zero voltage or phase angle
Full power rating @ 120°F
(49°C) ambient temperature
Optically isolated input Logic status lights Field-changeable, plug-in circuit
boards 10-stage capacity, optional to 19
stages Fused output stages 