UL 3573 high temperature ignition lead wire for burner systems

Product Overview

UL 3573 high temperature ignition lead wire is used in burner systems where the internal lead serves a specific ignition-related function inside thermal equipment. In these applications, the wire is not selected as a general internal lead. It is chosen because the burner system requires a construction that fits both the ignition role and the operating environment of the equipment.

For buyers, this makes UL3573 a more application-focused option than ordinary internal wiring. It is particularly relevant in burner systems where the lead is routed through protected internal sections and must continue performing in a heat-influenced environment over time.

Key Ratings

UL Style: UL 3573 (AWM, UL 758)
High temperature ignition lead wire construction
Application type: burner systems and protected ignition-related routing
Conductor: stranded copper, tinned copper optional
Internal use: ignition lead sections in thermal equipment

Why Buyers Use UL3573 in Burner Systems

Burner systems usually require more application-specific internal lead selection than standard electrical products. Buyers choose UL3573 when the lead wire is part of an ignition path and the internal environment is hotter or more demanding than ordinary low-duty wiring is meant to support.

This style is useful because it fits the real function of the lead inside the burner system instead of treating it as a general-purpose internal connection.

Typical Applications

Burner ignition lead systems
Internal ignition routing in heating equipment
OEM burner assemblies
Protected ignition sections inside thermal equipment
Specialized internal lead paths in burner products

Buyer Considerations

For quotation, buyers usually confirm conductor size, insulation color, package format, and the actual ignition-related application. In burner projects, it also helps to clarify whether the lead is part of a gas ignition circuit, a burner module, or another protected internal thermal section.

Selection Notes

If the project needs a broader ignition wire category, UL3304 may also be reviewed. If the application is a general high voltage silicone internal wire, UL3239 may be relevant depending on the equipment. UL3573 is more suitable where the lead is specifically part of a burner-related ignition system and long-term internal fit matters.