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SKU:
NLT1V00631
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Crydom D2440DE Dual Solid State Relay 17–32VDC Input 24–280VAC 40A
$45.99
In Stock
$45.99
Sale price
$45.99
Regular price
Dual-channel solid-state relay cross-referencing Crydom D2440DE and SADE2440, with 17–32 VDC control input and 24–280 VAC load output.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Control panels and industrial equipment specified for Crydom D2440DE
- Equipment cross-referencing SADE2440
- Resistive-load circuits requiring dual 17–32 VDC-input, 24–280 VAC-output channels
Product Overview
A heater or resistive load that stays on with the control removed—or never turns on even though the correct DC command is present—can indicate a failed solid-state relay channel. Confirm the load, wiring, control voltage, heat sink, and short-circuit condition before fitting the new relay.
This device uses two electronically switched channels to control AC loads without mechanical contacts. Each channel is rated up to 40 amps under the manufacturer’s thermal conditions; actual usable current depends on heat sinking, ambient temperature, enclosure airflow, and the load.
Key Features & Performance
- Two independent AC-output channels in one relay package
- 17–32 VDC control-input range
- 24–280 VAC load-output range
- Up to 40 A per channel when installed within the required thermal limits
Replaces Part Numbers
- D2440DE
- SADE2440
Common Uses
- Replacing a relay channel that is electrically open
- Correcting an output that remains on after its control signal is removed
- Servicing dual heater or resistive-load control circuits
- Repairing equipment after the failed load and overheat cause are corrected
Technical Specifications
- Product Type: Dual Solid-State Relay
- Channels: 2
- Control Input: 17–32 VDC
- Load Output: 24–280 VAC
- Maximum Rated Current: 40 A per channel under specified thermal conditions
- Condition: New replacement unit
Installation & Fitment
- Lock out and verify absence of hazardous voltage before touching the circuit
- Have a qualified technician confirm terminal functions, load type, current, and control polarity
- Mount to a correctly sized flat heat sink using the specified thermal interface and torque
- Test leakage current, switching, temperature rise, and protective devices before unattended operation
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Production date, serial number, engine option, dimensions, connections, and previous repairs can change the part used within the same model. Compare the removed item and service information before purchase.
Frequently Asked Questions
Q: Does 40 amps mean the relay can carry that current without a heat sink? A: No. Solid-state relay ratings depend heavily on heat sinking and ambient temperature. Follow the maker’s derating and mounting data.
Q: Can this relay switch a DC load? A: Its control input is DC, but the listed load output is AC. Do not use it for a DC load unless the equipment documentation specifically approves that use.
Q: Why should I compare the removed part? A: Use the compatible list as a starting point, then compare the original reference number, dimensions, connections, mounting details, production date, and equipment or engine serial information.
Q: Is this a factory-branded component? A: This is a new aftermarket part. The brand and model names identify the applications it is intended to service.
Part Summary
keywords: Crydom D2440DE replacement, SADE2440 dual SSR, 17-32VDC input relay, 24-280VAC solid state relay, 40 amp dual channel relay, industrial heater control SSR
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.