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Solid-State Relays

Solid State Relays are Silent and Offer Extremely Long Life.  SSRs are typically used by our customers because of a specialized switching need.  Due to cost, mechanical relays are a better choice for most applications.  For those who understand the special characteristics of SSRs, we offer a great selection of Crydom solid-state relays.

PRECAUTIONS

SSRs may not function properly when subjected to radioactive environments.  Forced air may be required to achieve maximum load ratings. NCD does NOT recommend driving any relay at maximum rated load ratings. It is not possible for NCD to verify manufacturer claims of load ratings. NCD Solid State Relay Controllers have NOT been tested at the rated loads. Solid State Relays must be carefully selected, AC and DC solid state relays cannot be used interchangeably.

PRECAUTIONS

Solid State Relays Require a Minimum Load, and will NOT function correctly unless minimum load requirements are met. External snubber circuitry may be required for certain applications. If a device turns on, but does not turn off, this usually indicates a need for a external snubber circuit. This may indicate minimum load requirements have not been met. Please research Crydom Solid State Relays or be familiar with this technology prior to purchase. Please consult Crydom engineers to determine the best relay for your application: www.crydom.com.

 
Type A: Crydom D2W202F
  • 2A 240VAC Normally Open SPST
  • Zero Crossing Turn On
  • Built-In Snubber Circuit
  • For Use with Resistive Loads
  • AC Switching ONLY
  • .06A Minimum Load Required
  • -30 to 80°C Operating Temperature
  • Datasheet: type_a_d_2w
  • Type B: Crydom CX240D5
    • 5A 240VAC Normally Open SPST
    • Zero-Cross Turn On
    • For Use with Resistive Loads
    • AC Switching ONLY
    • .06A Minimum Load Required
    • -30 to 80°C Operating Temperature
    • Datasheet: type_bc_c_x
  • Type C: Crydom CX240D5R
    • 5A 240VAC Normally Open SPST
    • Random Turn On
    • For Use with Inductive Loads
    • AC Switching ONLY
    • .06A Minimum Load Required
    • -30 to 80°C Operating Temperature
    • Datasheet: type_bc_c_x
  • Type D: Crydom PF240D25R
    • 25A 240VAC Normally Open SPST
    • Random Turn On
    • For Use with Inductive Loads
    • AC Switching ONLY
    • .06A Minimum Load Required
    • -30 to 80°C Operating Temperature
    • Datasheet: type_de_p_f
  • Polarity

    NOTE:  AC Solid State Relays Cannot Switch DC Loads!  DC Solid State Relays are Polarity Sensitive!  Please see our Wiring Diagram for DC SSRs: dc_solidstate_diagram

  • Type E: Crydom PF480D25
    • 25A 240VAC Normally Open SPST
    • Zero-Cross Turn On
    • For Use with Inductive Loads
    • AC Switching ONLY
    • .06A Minimum Load Required
    • -30 to 80°C Operating Temperature
    • Datasheet: type_de_p_f
  • Type F: Crydom MPDCD3
    • 3A 60VDC Normally Open SPST
    • For Use with Resistive or Inductive Loads
    • DC Switching ONLY
    • .02A Minimum Load Required
    • 1.5V Maximum On-State Voltage Drop
    • -40 to 80°C Operating Temperature
    • Datasheet: type_f_m_p
    • Wiring Diagram for DC SSRs: dc_solidstate_diagram
  • Type G: Crydom CMX60D20
    • 20A 60VDC Normally Open SPST
    • For Use with Resistive or Inductive Loads
    • DC Switching ONLY
    • No Minimum Load Required
    • .1V Maximum On-State Voltage Drop
    • -30 to 80°C Operating Temperature
    • Datasheet: type_bc_c_x
    • Wiring Diagram for DC SSRs: dc_solidstate_diagram
  • Type H: Crydom CMX60D10
    • 10A 60VDC Normally Open SPST
    • For Use with Resistive or Inductive Loads
    • DC Switching ONLY
    • No Minimum Load Required
    • .1V Maximum On-State Voltage Drop
    • -30 to 80°C Operating Temperature
    • Datasheet: type_bc_c_x
    • Wiring Diagram for DC SSRs: dc_solidstate_diagram
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