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Supco Temperature Switch: Mfr Part # STC4257 - Replacement HVACR Controls, Switches & Thermostats
SupcoReplacement HVACR Controls, Switches & Thermostats

Supco Temperature Switch: Mfr Part # STC4257

Supco Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Temperature Switch.

SKU 3G-OTH-95987

Also listed as: STC 4257 · STC-4257

Brand
Supco
Item
Temperature Switch: Mfr Part # STC4257
Category
Replacement HVACR Controls, Switches & Thermostats
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Technical Specifications

Supco
Manufacturer Part Number
STC4257
Product Type
Temperature Switch

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

Product Description

Supco Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Temperature Switch.

Frequently Asked Questions

What is the Supco STC4257 temperature switch used for?

The Supco STC4257 temperature switch is a replacement HVACR control used to open or close a circuit at a set temperature. It is commonly applied in refrigeration, air conditioning, and heating systems to protect equipment or trigger defrost cycles. This 5-pack provides multiple switches for service technicians.

What are the specifications of the Supco STC4257 temperature switch?

The Supco STC4257 is a temperature switch sold in a 5-pack. Its manufacturer part number is STC4257. As a replacement HVACR control, it is designed for temperature-based switching in refrigeration and air conditioning systems. For detailed electrical ratings, consult the Supco datasheet.

Where to buy the Supco STC4257 temperature switch worldwide?

3G Electric supplies the Supco STC4257 temperature switch to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this 5-pack of replacement HVACR controls.

How to install the Supco STC4257 temperature switch?

Install the Supco STC4257 temperature switch by disconnecting power, then mounting the switch in the appropriate location per the system schematic. Wire the switch in series with the controlled circuit, ensuring proper temperature setpoint adjustment. Always follow Supco’s installation instructions and local electrical codes.

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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