Crydom Series 1 Panel-Mount AC Solid-State Relay (10–125 A, 24–530 VAC)

A panel-mounted solid-state relay with thyristor (SCR) output for industrial loads. The output uses a direct-bond-copper substrate without epoxy encapsulation, reducing junction-to-case thermal resistance and increasing permissible surge current. Three voltage ranges are available: 24–280 V AC with current ratings of 10–125 A and 48–530 V AC with current ratings of 25–90 A. Control is 3–32 V DC, 90–280 V AC or 18–36 V AC. Zero-voltage or instantaneous switching is available as option -10.

The housing has anti-rotation barriers and SEMS screws with washers. EMC immunity is Level 3.

The Sensata applications brochure lists Series 1 twice in the railway section: for rail heating and point control, and for door drives, railway signalling and traffic control. The datasheet declares UL, CSA and TÜV approvals and CE compliance according to EN 60950-1, without railway standards. Suitability for vehicle installation should be confirmed with the manufacturer; the datasheet is sufficient for wayside and point applications.

Main features:

  • Voltage ranges: 24–280 V AC at 10–125 A and 48–530 V AC at 25–90 A
  • Control 3–32 V DC, 90–280 V AC or 18–36 V AC
  • Zero-voltage or instantaneous switching with option -10
  • Direct-bond-copper substrate without epoxy encapsulation
  • Anti-rotation barriers and SEMS screws with washers, EMC immunity Level 3
  • UL, CSA and TÜV approvals, CE compliance according to EN 60950-1