UL 3321 XLPE Wire 150°C 600V for Vietnam and Indonesia — High-Temp Appliance Wiring AWM Style 3321

UL 3321 XLPE Wire 150°C 600V for Vietnam and Indonesia

UL 3321 is an extruded XLPE (cross-linked polyethylene) insulated wire rated 150°C and 600V AC (or 750V DC) under UL AWM Style 3321, produced under UL Follow-Up Service File No. E333030. UL 3321 covers a conductor range from 30 AWG to 4/0 AWG in solid or stranded construction. An optional treated or untreated braid outer covering is available for applications requiring additional mechanical protection at the wire routing location. The insulation wall thickness is graded across four conductor size ranges: 30 mils minimum average for 30–9 AWG, 45 mils for 8–4 AWG, 60 mils for 3–2 AWG, and 80 mils for 1–4/0 AWG. UL 3321 is designated for internal wiring of appliances.

UL 3321 is the highest-temperature XLPE AWM wire specification at 600V — rated at 150°C continuous, positioned above UL 3271 (125°C / 600V) and UL 3666 (105°C / 600V) in the XLPE temperature hierarchy, and below silicone rubber wire (200°C / 600V) in the overall AWM wire temperature range. This 150°C rating places UL 3321 in a specific application niche: equipment internal wiring locations where the ambient temperature at the wire exceeds the 125°C limit of UL 3271 but does not reach the 200°C level that requires silicone rubber insulation — and where XLPE insulation’s cost advantage over silicone rubber makes UL 3321 the more economical specification for the 125–150°C application range. The optional braid outer covering of UL 3321 — available in treated or untreated construction — provides mechanical protection at routing contact points for applications where the bare XLPE surface requires additional abrasion resistance.

Vietnamese appliance manufacturers and equipment OEMs sourcing 150°C XLPE wire describe UL 3321 as dây XLPE 150°C 600V giá tốt (XLPE 150°C 600V wire good price) or dây XLPE 150°C nhà cung cấp (XLPE 150°C wire supplier). Indonesian industrial equipment suppliers and procurement operations describe UL 3321 as kabel XLPE 150°C harga grosir (XLPE 150°C cable wholesale price), particularly for the 4/0 AWG large conductor specification. CableApex exports UL 3321 factory-direct CIF Ho Chi Minh City and CIF Surabaya from Yangzhou.

Product Specifications — UL 3321

Insulation Wall Thickness by Conductor Size

XLPE AWM Wire Temperature Hierarchy — Where UL 3321 Fits

Applications in Vietnam and Indonesia

High-temperature appliance internal wiring at 125–150°C (Vietnam — appliance manufacturing)

Vietnamese household and commercial appliance manufacturers in Bình Dương, Đồng Nai, and Ho Chi Minh City assembling appliances where the internal wiring at certain routing locations operates between 125°C and 150°C during continuous operation specify UL 3321 as the cost-effective alternative to silicone rubber wire for these routing locations. High-wattage domestic heating appliances — commercial electric grills, infrared heaters, high-power toaster ovens, and commercial food warmers — have internal wiring sections near the heating element connection terminals where the sustained ambient temperature at the wire during continuous full-power operation reaches 130–145°C, exceeding the 125°C limit of UL 3271 XLPE but not reaching the 200°C level that requires silicone rubber insulation. UL 3321 at 150°C covers this application range at a lower cost than silicone rubber wire, with the XLPE insulation providing adequate thermal performance at the 130–145°C routing location temperature during continuous full-power appliance operation.

Vietnamese appliance OEMs sourcing UL 3321 as dây XLPE 150°C giá tốt (XLPE 150°C wire good price) for the high-temperature internal wiring sections in their appliance assemblies procure factory-direct from CableApex in Yangzhou — the 150°C XLPE specification at a significantly lower cost than silicone rubber wire for the 125–150°C temperature range where silicone rubber’s 200°C rating provides excess thermal margin at additional cost.

4/0 AWG large conductor XLPE at 150°C (Indonesia — harga grosir)

Indonesian industrial equipment manufacturers and panel builders sourcing 4/0 AWG UL 3321 — the largest conductor size in the UL 3321 range, appearing specifically in the long-tail keyword list for this style in Indonesia — specify this large conductor XLPE wire for the heavy internal power feed wiring in high-temperature industrial equipment where both the 600V AC voltage rating and the 150°C temperature rating are required at the 4/0 AWG conductor cross-section. Large transformer internal power connection leads, heavy motor power wiring in high-ambient-temperature enclosures, and main power bus conductors in industrial heating equipment are the primary applications for 4/0 AWG UL 3321 in Indonesia. Indonesian industrial procurement sourcing kabel XLPE 150°C harga grosir for the 4/0 AWG specification factory-direct from Yangzhou eliminates the distributor markup applied to specialty large conductor high-temperature XLPE wire through Indonesian electrical cable distribution channels.

Optional braid covering for abrasion-risk routing (Vietnam and Indonesia)

Vietnamese and Indonesian equipment manufacturers specifying UL 3321 for internal appliance wiring at routing locations where the wire is subject to contact abrasion — at routing clips, conduit entries, or routing passages in the equipment structure — specify the optional braid outer covering of UL 3321 to provide mechanical protection at these contact points. The optional treated or untreated braid construction of UL 3321 adds a woven textile or glass fibre outer covering over the XLPE insulation, protecting the XLPE insulation surface from abrasion at routing contact points in the same way that UL 3172 glass braid protects silicone rubber insulation. The treated braid option provides additional moisture and chemical resistance at the braid surface for applications in more aggressive environments.

High-temperature 750V DC wiring for energy storage (Vietnam)

Vietnamese industrial equipment OEMs assembling battery energy storage systems, DC power distribution equipment, and high-temperature DC bus wiring assemblies for export specify UL 3321 for DC bus and DC distribution wiring where both the 750V DC rating and the 150°C temperature rating are required simultaneously — an application where UL 3271 at 125°C is insufficient for the sustained DC bus temperature at full charge-discharge cycling load, but silicone rubber wire’s additional cost is not justified for the DC bus temperature range. The 750V DC rating of UL 3321 covers the DC bus voltage of standard 400V class battery energy storage systems, and the 150°C XLPE insulation covers the sustained temperature at the DC bus wire routing location during continuous high-rate charge-discharge cycling.

Additional applications across Vietnam and Indonesia

• Commercial cooking equipment internal wiring at 130–145°C — Vietnamese commercial kitchen equipment manufacturers where heating element connection wiring requires 150°C XLPE at a lower cost than silicone rubber
• High-efficiency motor lead wiring for Class F motors — Vietnamese and Indonesian motor manufacturers where Class F motor winding temperature (155°C limit) requires wire rated above UL 3271’s 125°C at the winding lead connection point
• Industrial transformer internal lead connections at elevated winding temperature — Vietnamese and Indonesian transformer manufacturers where winding temperature at the connection lead exceeds the 125°C limit of UL 3271
• High-power LED driver internal wiring — Vietnamese and Indonesian LED lighting equipment manufacturers where high-power LED driver module operating temperatures exceed 125°C at the internal wire routing location

Key Features

Ordering Information

Specify AWG (30 AWG–4/0 AWG), conductor type (solid or stranded), outer covering (none / treated braid / untreated braid), and quantity. MOQ 500 m per AWG. Mixed AWG orders accepted. UL 3321 compliance documentation and RoHS Declaration supplied with every order. For 125°C XLPE at 600V, see UL 3271. For 200°C silicone rubber at 600V, see UL 3071. Sample from 10 m.

Why CableApex for Vietnam and Indonesia

CableApex manufactures UL 3321 XLPE wire under UL Follow-Up Service File No. E333030 in Yangzhou, China. Factory-direct export to Vietnam and Indonesia — CIF Ho Chi Minh City or CIF Surabaya, 10–14 day transit. Full UL compliance documentation for appliance OEM qualification and equipment manufacturer procurement. No distributor margin on factory-direct orders. Contact us within 24 hours.

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