UL3321 XLPE Insulated Wire – 150°C / 600V Hook-Up Wire for High-Temperature Applications
UL3321 is a UL-certified single-conductor wire insulated with cross-linked polyethylene (XLPE). Rated for 150°C and 600V, this wire is designed for internal wiring in electronic and electrical equipment where high heat resistance, voltage stability, and flame performance are critical.
Key Features
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Conductor: Solid or stranded bare or tinned copper, available in sizes from 30 AWG to 4/0 AWG
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Insulation: Extruded XLPE with thickness varying by AWG size:
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30–9 AWG: 30 mils average, 27 mils minimum
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8–4 AWG: 45 mils average, 40 mils minimum
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3–2 AWG: 60 mils average, 54 mils minimum
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1–4/0 AWG: 80 mils average, 72 mils minimum
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Temperature Rating: Up to 150°C
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Voltage Rating: 600V AC / 750V DC
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Flame Resistance: Passes UL Horizontal Flame Test
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Standards: Complies with UL 758 Appliance Wiring Material (AWM) Style 3321
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Usage: Designed for internal wiring in electronic and electrical equipment
Common Applications
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Internal wiring in electronic devices and instrumentation
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Applications requiring high heat resistance and high-voltage performance
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Internal connections in industrial control panels and machinery
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Suitable for motors, transformers, heating systems, and lighting systems
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