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Supco Defrost Cycle Control: Mfr Part # EDT21 - Replacement HVACR Controls, Switches & Thermostats
SupcoReplacement HVACR Controls, Switches & Thermostats

Supco Defrost Cycle Control: Mfr Part # EDT21

Supco Replacement HVACR Controls, Switches & Thermostats.

SKU 3G-OTH-113387

Also listed as: EDT 21 · EDT-21

Brand
Supco
Item
Defrost Cycle Control: Mfr Part # EDT21
Category
Replacement HVACR Controls, Switches & Thermostats
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Supco
Manufacturer Part Number
EDT21

Technical Documents

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Supco Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Supco Replacement HVACR Controls, Switches & Thermostats.

Frequently Asked Questions

What is the SUPCO EDT21 defrost cycle control used for?

The SUPCO EDT21 is a replacement HVACR control used to manage defrost cycles in refrigeration and freezer systems. It helps prevent ice buildup on evaporator coils by initiating periodic defrost, ensuring efficient cooling and protecting compressor performance in commercial and industrial applications.

What are the specifications of the SUPCO EDT21?

The SUPCO EDT21 defrost cycle control has manufacturer part number EDT21. It is a replacement HVACR control designed for defrost cycle management. For detailed electrical ratings and temperature ranges, consult the Supco technical datasheet. 3G Electric supplies this control globally.

Where to buy the SUPCO EDT21 worldwide?

You can source the SUPCO EDT21 defrost cycle control from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide reliable sourcing for HVACR replacement controls.

How to install the SUPCO EDT21 defrost cycle control?

To install the SUPCO EDT21, first disconnect power to the refrigeration system. Mount the control securely, wire per the Supco wiring diagram, and set the defrost frequency and duration according to system requirements. Always follow Supco's installation manual and local electrical codes for safe operation.

Used in

Common applications for Supco
Commercial refrigeration display cases — Supco RO82 relay and CSS-25U starter for compressor motor control without run capacitors
Medium-load HVAC systems — Supco SPP 6/SPP 8 hard-start devices to reduce compressor inrush current and extend motor lifespan
Cold-chain pharmaceutical and food storage — SL300TH temperature–humidity data logger for continuous monitoring and regulatory documentation
Refrigerant service operations — Piercing valves and perforator cocks in 1/2" and 5/8" sizes for fast, non-invasive line access
Compressor thermal management — Universal Compressor Door for reducing shell temperature and improving efficiency in hot ambient conditions
Retrofit and field repairs — Supco controls with Quick Connect terminals for rapid installation in legacy refrigeration circuits

Supco Products

3G Electric supplies Supco replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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