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The Form-C Relay Module provides seven independent Form-C Single-Pole-Double-Throw relays for general purpose switching and control of external devices. With an external power supply, you can use the module to drive remote RF, coaxial, and microwave devices such as the Keysight 876xx, Keysight 8710xx series, and mercury relays. This module is normally set up to use an external power supply for voltages up to 250V DC, and can be easily configured to use the internal 5V DC power supply. In applications where the module's voltage or current specifications are going to be exceeded, use the module to drive a properly rated external relay to switch those signals.

Standard Product Includes

  • 44477A Form-C Relay Module
  • 1 Connection Terminal
  • 1 Certificate of Verification


  • Switching up to 2A, 250V
  • 7 Single-Pole-Double-Throw relays module
  • Armature latching relay
  • Thermal Offset: <3uV
  • Maximum Scan Rate: 43 chan/sec
  • Maximum Voltage: 250V
  • Maximum Current: 2A
  • Maximum Power - Per channel: 60W, 125VA
  • Maximum Power - Per module: 420W or 875VA
  • Initial Closed Channel Resistance: < 1 Ohm