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Compact grey rectangular surge protector with terminal screws and dry contact terminals, 6.9 by 3.5 by 2.5 inches

DITEK

DITEK DTK-120SRD 120V surge protector

SKU CH-4HSG-XQPWV MPN DTK-120SRD

Protects 120V circuits with hybrid surge suppression, EMI/RFI filtering and dry-contact status alerts

  • Supply voltage120 V
  • Protects 120 V circuits and control panels with hybrid series design
  • Dry contacts enable remote notification of surge protection status
  • EMI/RFI filtering reduces electrical noise for cleaner power delivery
  • UL Recognized Component suitable for use in UL Listed control panels
  • Compact 6.9 × 3.5 × 2.5 in form factor fits tight panel spaces

Industrial 120V Surge Protector with Dry Contacts

The DITEK DTK-120SRD is a 120V AC surge suppressor designed for hard-wired installation inside UL Listed control panels. It uses a hybrid series design that combines maximum critical load protection with EMI/RFI filtering. A 20A rating suits industrial circuits and the integrated dry contacts provide remote notification of the protection status. This unit is built for facilities that require a UL Recognized Component.

Hard-wired panel installation

Installation requires wiring the device directly into the electrical panel or control enclosure, so it is intended for qualified electricians. The hybrid series topology places the protection elements in series with the load, which means wiring must follow the manufacturer's schematic exactly to maintain the filtering and clamping performance. The dry contact terminals must also be connected to a monitoring system if remote status alerts are needed. Incorrect wiring is the most common issue and can leave the circuit unprotected.

Verify panel listing and monitoring requirements

Confirm that the target enclosure is a UL Listed control panel where a UL Recognized Component is acceptable. Ensure the circuit voltage is 120V AC and the current does not exceed 20A. Check that your monitoring infrastructure can accept a dry contact signal for surge status notification. If a fully UL Listed series protector is specified instead, this model does not meet that requirement.

How it compares

Measured against everything we stock in Surge Protector Power Strips, at today’s prices. Recalculated every night.

Price $101.99
Pricier than about 81% of the 565 comparable items (median $37.99).

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Specifications

Product
Brand nameDITEK
Power
Supply voltage120 V
Size & build
Shipping weight2.27 kg
Package size254 × 254 × 254 mm

Questions about this item

How can I verify the DTK-120SRD is protecting my 120V circuit after installation?

The unit provides dry contacts for remote notification of surge protection status, allowing monitoring systems to confirm active protection on the electrical circuit or control panel.

What comes in the box with the DTK-120SRD and what must I supply separately?

The surge protector itself is included; you must supply the 120V AC circuit wiring, a suitable UL Listed control panel enclosure, and any conduit or mounting hardware required for your installation.

When should I choose the DTK-120SRD versus the DTK-TSS4D for my application?

Choose the DTK-120SRD when a UL Recognized Component is required inside a UL Listed control panel; select the DTK-TSS4D when a UL Listed series surge protector with dry contacts is specified instead.

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