Power Switching Controls

Solid state power devices complement the rapid switching required by PID temperature controllers delivering optimum system performance and service life.


  • Available in 1-phase and 3-phase/2-leg and 3-leg configurations
  • Zero-cross, random or phase-angle fire options
  • Feature touch-safe terminations

Watlow's EZ-ZONE® ST integrated controller offers a complete thermal system control solution in a single package.

The DIN-A-MITE family from Watlow includs SCR control, heat sink, wiring and touch safe exterior in one package.
 Din-A-Mite Style A          Din-A-Mite Style B          Din-A-Mite Style C          Din-A-Mite Style D         

POWER SERIES solid state controllers include single- and three-phase models from 65 to 250 amperes. Field configurable phase-angle or zero-cross firing improves application flexibility on-site where needed.
Specifications and Ordering

The QPAC modular controller from Watlow is a modular silicon controlled recti?er (SCR) power controller with plug-in features for ?exibility. Bases are rated from 150 to 1000 amperes in one-phase, three-phase, two leg and three-phase, three leg configurations.
Specifications and Ordering

The Watlow TLM (thermal limit monitor) series is a compact, cost-effective thermal limit monitor solution for multi-channel, redundant temperature monitoring.
Specifications and Ordering