PIDMaxwell SCR power controllers typically include:

• Semiconductor (I²t) fusing: Ultra-fast fuses to protect the SCRs against short circuits.
• Over-temperature protection: Heatsink thermostat or fan failure detection.
• Over-current / phase loss detection: Adjustable current monitoring.
• Heater break alarm (partial load failure): Detects open heating elements or abnormal resistance changes.
• dv/dt snubber networks: Protect SCRs against voltage transients.
• Input/output isolation: Galvanic isolation between control and power circuits.