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Red metal DIN-rail redundancy module with LED indicator, 4.88 by 1.97 by 4.55 inches

Sola/Hevi-Duty

Sola/Hevi-Duty SDN 2.520RED Redundancy Module 24V DC 20A DIN Rail

SKU CH-3K2Y-MZMMD

Provides redundant 24V DC power for SDN supplies, handling 20A with DIN-rail mounting and LED status

  • Continuous power via 20 A redundancy module
  • Wide 10.8–30.8 V DC input range
  • Clean output with < 3.0 mV noise
  • DIN-rail mount fits 4.88 × 1.97 × 4.55 in
  • Certified to ABS, ATEX, CE, cRUus, cULus, DNV-GL, ExEAC, IECEx, RoHS

24V DC 20A Redundancy Module

The Sola/Hevi-Duty SDN 2.520RED adds N+1 redundancy for SDN series 24V DC power supplies. It accepts an input range of 10.8 to 30.8V DC and delivers a continuous 20A output with a peak rating of 20A. The unit mounts on a standard DIN rail inside industrial control cabinets.

Thermals Noise and Power Draw

The module dissipates up to 30W and operates across a temperature range of -13 to 185 degrees F without forced airflow. Output noise remains below 3.0 mV for clean power delivery. A metal case provides rugged protection in harsh environments.

Status LED and Approvals

A built-in status indicator LED gives immediate visual confirmation of operational health. The module carries ABS, ATEX, CE, cRUus, cULus, DNV-GL, ExEAC, IECEx and RoHS approvals for global compliance. It is not suited for systems requiring voltages other than 24V DC or currents above 20A.

How it compares

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Price $93.99
Pricier than about 67% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameSOLAHD

Questions about this item

How do I mount the SDN 2.520RED on a DIN rail and what is the common wiring mistake?

Clip the metal case onto a standard DIN rail using the integrated latch; the error buyers make is reversing the 10.8 to 30.8V DC input polarity, which prevents the LED status indicator from lighting.

What maintenance does the redundancy module require and when should I replace it?

No scheduled maintenance is needed; replace the unit if the LED status indicator stays off with valid 24V DC input or if output noise rises above 3.0 mV during 20 A continuous load.

At what temperature does the SDN 2.520RED hit its thermal limit first under sustained 20 A operation?

The specified operating range ends at 185 °F; sustained 20 A output at or above this temperature will trigger thermal shutdown before any other limit is reached.

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