SSR Power Controllers

Solid-state relays (SSRs) are an ideal, low-cost power control solution for switching resistive loads precisely and
frequently. Chromalox offers rugged, industrial-grade, touch-safe designs that employ zero crossover firing and
manage single-phase loads up to 120 A and three-phase, 3-leg loads up to 55 A at voltages up to 600 Vac. Most
controllers come complete with integrated heatsink, SCR thermal protection with LED indication, and have USA
and Canadian UL component recognition and CE conformity. Optional alarms are available for over temperature
as well as load and line interrupt conditions.

SCR Power Controllers

Chromalox microprocessor-based SCRs provide precise power control for industrial heater loads from 25 A to
1200 A and up to 690 Vac. These versatile controllers support various load configurations and offer multiple
firing modes, including zero-crossing and phase-angle, to effectively manage resistive heaters, IR lamps, and
transformer-coupled loads.

Key features include:
. Advanced Diagnostics: Real-time system monitoring and powerful parameter diagnostics.
. Flexible Communications: On-board support for multiple Fieldbus protocols and 4-channel management.
. Intuitive Software: Detailed configuration tools for data trending, historical logging, and easy parameter cloning across networks.