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generated_at: "2026-11-07T23:43:36.599Z"
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# Crydom D1D40 Solid-State DC Relay

_Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._

## Summary

- Manufacturer: Crydom
- Model: D1D40
- Condition: New From Surplus Stock
- Price: $50.00 USD
- Availability: In stock, 1 available
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 0.75 lb, estimated
- Shipping dimensions: 8X8X3 in, estimated

## Categories

- Test Equipment > Electrical Test > Relays (primary)

## Details

### Configuration

- Operating Voltage Range: 0-100 VDC
- Max Load Current: 40 A

## Overview

Solid-state DC relay designed for switching up to 40A at 1-60VDC, features optically isolated input, zero voltage turn-on, and built-in snubber. Suitable for industrial control systems, it operates in harsh environments with and displays high thermal efficiency and rapid switching speed. Encapsulated in an epoxy case for durability, connects through screw terminals for secure wiring. Interfacing via DC control signals enables integration with PLCs and microcontrollers, offering reliable operation in automation and process control applications.

## Application

Designed for high-reliability DC switching in industrial control systems, this solid-state relay operates on PCB or panel-mount platforms, interfacing via standard control voltage inputs and providing isolated load outputs. It excels in applications requiring silent, fast switching of DC loads such as motor controls, battery management systems, and power distribution networks.

## Interface

Control input via two M3 screw terminals for 3-32VDC at 12mA, suitable for 12-24AWG wire; Load output via two M4 screw terminals for 1-100VDC at 40A, suitable for 6-12AWG wire. External heatsink required for full current rating to dissipate heat generated during switching.

## Images

- <https://www.artisantg.com/itemimages/crydom_d1d40_view1_202591612825.jpg>
- <https://www.artisantg.com/itemimages/crydom_d1d40_view2_202591612825.jpg>
- <https://www.artisantg.com/itemimages/crydom_d1d40_view3_202591612825.jpg>
- <https://www.artisantg.com/itemimages/crydom_d1d40_view4_202591612825.jpg>
