Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

SOUTHWIRE Nonplenum-Rated Thermostat Wire, 3 Conductors, 500 ft, 150 V, CL2 - Nonplenum-Rated Thermostat Wires
SOUTHWIRENonplenum-Rated Thermostat Wires

SOUTHWIRE Nonplenum-Rated Thermostat Wire, 3 Conductors, 500 ft, 150 V, CL2

The SOUTHWIRE Thermostat Wire (MPN 553030501) is a nonplenum-rated CL2 cable with 18 AWG conductor size, 3 conductors, 150 V voltage rating, and 500 ft overall length. 3G Electric interprets your demand for this…

SKU 3G-OTH-47574

Brand
SOUTHWIRE
Item
Nonplenum-Rated Thermostat Wire, 3 Conductors, 500 ft, 150 V, CL2
Category
Nonplenum-Rated Thermostat Wires
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SOUTHWIRE
Manufacturer Part Number
553030501
Type
CL2
Overall Lg
500 ft
Volt
150 V
Conductors
3

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The SOUTHWIRE Thermostat Wire (MPN 553030501) is a nonplenum-rated CL2 cable with 18 AWG conductor size, 3 conductors, 150 V voltage rating, and 500 ft overall length. 3G Electric interprets your demand for this specific wire, sources it from our extensive network across 14 industrial departments, and provides a firm quote with dedicated support. Our specialist depth in controls—including expertise with brands like Schneider and ABB—ensures we can advise on the right wiring solution for your application.

Frequently Asked Questions

What is Southwire thermostat wire used for?

Southwire 18 AWG CL2 thermostat wire connects HVAC thermostats, zone valves, and boiler controls to heating and cooling equipment. It is suitable for low-voltage residential and commercial control circuits up to 150 V, installed in non-plenum spaces per local electrical codes.

What are the specifications of Southwire 553030501 thermostat wire?

This Southwire thermostat wire has 18 AWG conductors, 3 conductors total, 500 ft overall length, rated 150 V, and CL2 classification for non-plenum installations. The manufacturer part number is 553030501. It is designed for low-voltage control wiring in HVAC systems.

Where to buy Southwire thermostat wire worldwide?

3G Electric supplies Southwire thermostat wire worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 18 AWG, 3-conductor, 500 ft CL2 wire (MPN 553030501).

How to install Southwire CL2 thermostat wire?

Install Southwire CL2 thermostat wire in non-plenum spaces only, per NEC Article 725. Use proper strain relief and avoid sharp bends. Strip insulation carefully to prevent nicking conductors. Connect to low-voltage terminals (24 V typical) on thermostat and HVAC equipment. Do not exceed 150 V rating.

Used in

Common applications for SOUTHWIRE
Commercial construction — Southwire THHN/THWN-2 building wire (750 kcmil) for feeder circuits in conduit systems
Industrial maintenance — Southwire 8 AWG THHN/THWN-2 for motor branch circuits in wet locations
Outdoor job sites — Southwire 50 ft extension cord (12/3 SJTW, L5-20P) for powering 20 A equipment
Fixture wiring — Southwire 18 AWG TFFN wire for control panels and lighting fixtures in dry environments
Temporary power distribution — Southwire 25 ft extension cord (14/3 SJTW) for portable tools on construction sites
Workshop lighting — Southwire AL60CSW LED work light for high-bay illumination in maintenance bays

SOUTHWIRE Products

3G Electric supplies SOUTHWIRE nonplenum-rated thermostat wires. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
This 6-conductor thermostat wire is rated for 150 V and classified CL2 for nonplenum installations. Suitable for low-voltage control wiring in HVAC systems, thermostats, and zone valves. Overall length of 250 ft
SOUTHWIRE
This 6-conductor thermostat wire is rated for 150 V and classified CL2 for nonplenum installations. Suitable for low-voltage control wiring in HVAC systems, thermostats, and zone valves. Overall length of 250 ft
This 2-conductor thermostat wire is rated for 150 V and CL2 nonplenum applications. It is used for low-voltage control wiring in HVAC systems, such as thermostats, zone valves, and boiler controls. The 500 ft length supports residential and light commercial installations
SOUTHWIRE
This 2-conductor thermostat wire is rated for 150 V and CL2 nonplenum applications. It is used for low-voltage control wiring in HVAC systems, such as thermostats, zone valves, and boiler controls. The 500 ft length supports residential and light commercial installations
This nonplenum-rated thermostat wire features 6 conductors of 18 AWG, rated for 150 V and CL2 classification. The 250 ft length is suitable for low-voltage control circuits in residential and commercial nonplenum spaces, commonly used for connecting HVAC thermostats to heating and cooling equipment
SOUTHWIRE
This nonplenum-rated thermostat wire features 6 conductors of 18 AWG, rated for 150 V and CL2 classification. The 250 ft length is suitable for low-voltage control circuits in residential and commercial nonplenum spaces, commonly used for connecting HVAC thermostats to heating and cooling equipment
CL2P plenum-rated thermostat wire with 6 conductors, 300 V rating, and 250 ft length. Suitable for low-voltage control wiring in HVAC systems, including thermostats and zone valves, where fire safety is required for installation in air-handling spaces
SOUTHWIRE
CL2P plenum-rated thermostat wire with 6 conductors, 300 V rating, and 250 ft length. Suitable for low-voltage control wiring in HVAC systems, including thermostats and zone valves, where fire safety is required for installation in air-handling spaces
Nonplenum-rated CL2 thermostat cable with 18 AWG, 3 conductors, 150 V rating, and 500 ft length. Suitable for low-voltage control wiring in HVAC systems such as thermostats, zone valves, and boilers in residential and commercial installations where nonplenum-rated cable is required
SOUTHWIRE
Nonplenum-rated CL2 thermostat cable with 18 AWG, 3 conductors, 150 V rating, and 500 ft length. Suitable for low-voltage control wiring in HVAC systems such as thermostats, zone valves, and boilers in residential and commercial installations where nonplenum-rated cable is required
CL2-rated thermostat wire with 6 conductors, 150 V voltage rating, and 250 ft length. Suitable for low-voltage control wiring in HVAC and building automation systems where nonplenum-rated cable is required
SOUTHWIRE
CL2-rated thermostat wire with 6 conductors, 150 V voltage rating, and 250 ft length. Suitable for low-voltage control wiring in HVAC and building automation systems where nonplenum-rated cable is required

More from SOUTHWIRE

View all SOUTHWIRE parts
Nonplenum-rated thermostat wire with 12 conductors of 18 AWG, 250 ft length, and 150 V rating. Suitable for connecting HVAC thermostats to heating, cooling, and ventilation equipment in standard indoor installations where plenum-rated cable is not required
SOUTHWIRE
Nonplenum-rated thermostat wire with 12 conductors of 18 AWG, 250 ft length, and 150 V rating. Suitable for connecting HVAC thermostats to heating, cooling, and ventilation equipment in standard indoor installations where plenum-rated cable is not required
Nonplenum-rated thermostat wire with 7 conductors, 250 ft length, and 150 V rating. Suitable for connecting HVAC thermostats to heating, cooling, and ventilation equipment in residential and light commercial buildings where plenum-rated cable is not required
SOUTHWIRE
Nonplenum-rated thermostat wire with 7 conductors, 250 ft length, and 150 V rating. Suitable for connecting HVAC thermostats to heating, cooling, and ventilation equipment in residential and light commercial buildings where plenum-rated cable is not required
This 3-conductor thermostat wire is rated for 150 V and classified CL2/CM for use in nonplenum spaces. With an 18 AWG conductor size and 50 ft length, it is suited for low-voltage control circuits in HVAC systems, including connections to thermostats, zone valves, and boiler controls
SOUTHWIRE
This 3-conductor thermostat wire is rated for 150 V and classified CL2/CM for use in nonplenum spaces. With an 18 AWG conductor size and 50 ft length, it is suited for low-voltage control circuits in HVAC systems, including connections to thermostats, zone valves, and boiler controls
This nonplenum-rated thermostat wire features 8 conductors with 18 AWG size, rated for 150 V and CL2 classification. The 250 ft length supports wiring for HVAC thermostats, zone valves, and boiler controls in residential and light commercial installations
SOUTHWIRE
This nonplenum-rated thermostat wire features 8 conductors with 18 AWG size, rated for 150 V and CL2 classification. The 250 ft length supports wiring for HVAC thermostats, zone valves, and boiler controls in residential and light commercial installations
Nonplenum-rated thermostat wire with 7 conductors, 250 ft length, and 150 V rating. Suitable for low-voltage control circuits in HVAC systems, including thermostats, zone valves, and air handlers in standard indoor installations
SOUTHWIRE
Nonplenum-rated thermostat wire with 7 conductors, 250 ft length, and 150 V rating. Suitable for low-voltage control circuits in HVAC systems, including thermostats, zone valves, and air handlers in standard indoor installations
5-conductor thermostat wire with 20 AWG conductors, 250 ft length, rated 150 V and CL2 for nonplenum installations. Suitable for low-voltage control wiring in thermostat and HVAC systems
SOUTHWIRE
5-conductor thermostat wire with 20 AWG conductors, 250 ft length, rated 150 V and CL2 for nonplenum installations. Suitable for low-voltage control wiring in thermostat and HVAC systems
This 8-conductor thermostat wire is rated for 150 V and has an overall length of 125 ft. It is suitable for low-voltage control circuits in HVAC systems, connecting thermostats to furnaces, heat pumps, and air handlers. Nonplenum-rated for use in walls and other non-air-handling spaces
SOUTHWIRE
This 8-conductor thermostat wire is rated for 150 V and has an overall length of 125 ft. It is suitable for low-voltage control circuits in HVAC systems, connecting thermostats to furnaces, heat pumps, and air handlers. Nonplenum-rated for use in walls and other non-air-handling spaces
Nonplenum-rated thermostat wire with 4 conductors, 250 ft length, and 150 V rating. Suitable for low-voltage control circuits in residential and light commercial HVAC systems. Not for use in air-handling spaces
SOUTHWIRE
Nonplenum-rated thermostat wire with 4 conductors, 250 ft length, and 150 V rating. Suitable for low-voltage control circuits in residential and light commercial HVAC systems. Not for use in air-handling spaces