• Crydom panel mount, DC output solid-state relay
  • DC input, 100Vdc / 40A output @ 40C
  • Low-impedance MOSFET output for reduced power dissipation
  • Epoxy-free design enhances overall reliability by eliminating stress on internal components
  • Agency approvals; cURus Recognized, CE

Crydom D1D40 40 Amp / 100Vdc DC Output Solid State Relay

Product Options
  • Additional Information:

    In Stock - product normally ships within 24 hours. Please contact us at 800.879.7918 / sales@hbcontrols.com for order quantities ≥10 pieces to confirm availability and volume discount pricing.


    Product Datasheet: Crydom DxD DC Output Solid-State Relays

  • Product Description:

    The Crydom D1D40 is a DC output solid state relay capable of switching 40 amp loads at a maximum voltage of 100Vdc. The D1D40 utilizes a low-impedance MOSFET to switch load power, which reduces power dissipation and enhances life expectancy. The maximum on-state impedance (Rds) for the output of the solid state relay is 0.025 Ohms, which equates to roughly 40W of power dissipation when switching a 40 amp load.


    The input of the D1D40 accepts control signals between 3.5Vdc and 32Vdc and incorporates and active current regulating circuit. The input of the solid state relay will pull approximately 10mA @ 3.5Vdc, and not exceed 15mA at 32Vdc. This makes them ideally suited for applications controlled by a low power PLC or control board.


    The epoxy-free design of the D1D40 solid state relay significantly reduces stress placed on internal components. The expansion and contraction of epoxy during normal operation of similar solid state relays in the market can result in the eventual fatigue of components that can result in the premature failure of the relay. The typical MTBF (mean time before failure) of a D1D40 solid state relay is >7 million hours.


    A heat sink and thermal compound are typically required to prevent a solid state relay from overheating during normal operation. HBControls offers a range of DCoutput power controllers, which are solid state relays pre-assembled onto thermally efficient heat sinks and derated to their maximum load current rating in a 40°C ambient temperature.


    Inductive Loads:

    While the D1D40 is suitable for switching most types of loads, caution must be taken when switching inductive loads to prevent the solid state relay from being damaged by back emf. A simple solution is to place a fast recovery diode directly across the load, with the cathode of the diode connected to the positive terminal of the load, and the anode of the diode connected to the negative terminal of the load. Please contact us at support@hbcontrols.com / 800.879.7918 if you’d like additional information or support.



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