UL 3122 200°C Silicone Rubber Wire for Vietnam — 300V Lacquered Braid 26–16 AWG Internal Wiring

UL 3122 200°C Silicone Rubber Wire for Vietnam

UL 3122 is an extruded silicone rubber insulated wire with a lacquered braid outer covering, rated 200°C and 300V AC under UL AWM Style 3122, produced under UL Follow-Up Service File No. E333030. UL 3122 covers a conductor range from 26 AWG to 16 AWG in solid or stranded construction. The silicone rubber insulation wall is 15 mils minimum average thickness and 13 mils minimum at any point — significantly thinner than the 30 mils insulation wall of UL 3071, UL 3135, and UL 3172, consistent with UL 3122’s 300V AC voltage rating which requires less insulation wall thickness than the 600V-rated silicone rubber styles. The lacquered braid outer covering of UL 3122 provides surface protection, dimensional stability, and a smooth lacquered finish over the silicone rubber insulation.

The critical distinction of UL 3122 within the silicone rubber AWM wire family is its voltage rating — 300V AC, compared to the 600V AC rating of UL 3071, UL 3135, and UL 3172. This makes UL 3122 the correct specification for 300V internal wiring applications in high-temperature environments where the 200°C silicone rubber thermal performance is required but the voltage at the wire routing location does not exceed 300V AC — and where the thinner insulation wall and lacquered braid construction of UL 3122 is preferred over the thicker-walled 600V-rated silicone styles. The use designation of UL 3122 is “internal wiring” — broader than the “internal wiring of appliances” designation of UL 3071 and UL 3135 — covering internal wiring applications in a wider range of equipment types beyond appliances.

Vietnamese equipment manufacturers and equipment OEMs assembling products for domestic use and for export specify UL 3122 as dây nội bộ silicone 200°C 300V (200°C 300V silicone internal wire) for internal wiring applications where the 300V rating is appropriate and the 200°C silicone rubber insulation is required at the wire routing location. CableApex exports UL 3122 factory-direct CIF Ho Chi Minh City from Yangzhou.

Product Specifications — UL 3122

UL 3122 vs UL 3172 vs UL 3071 — 300V vs 600V Silicone Rubber Wire

Applications in Vietnam

300V control circuit internal wiring in high-temperature equipment (Vietnam — equipment OEMs)

Vietnamese industrial equipment OEMs assembling ovens, heating equipment, and high-temperature process equipment for domestic use and for export specify UL 3122 for the 300V control circuit internal wiring at routing locations where the ambient temperature at the wire exceeds 105°C — the thermostat signal wiring, temperature controller input wiring, and sensor signal circuits inside the equipment enclosure that operate at 24V DC, 48V DC, or low-voltage AC control voltages well within UL 3122’s 300V rating. The thinner insulation wall of UL 3122 (15 mils average versus 30 mils for UL 3071 and UL 3135) makes it more compact for routing fine AWG control signal wiring in tight spaces inside the equipment enclosure, while the 200°C silicone rubber insulation handles the elevated thermal environment at the wire routing location.

Vietnamese equipment OEMs specifying dây nội bộ silicone 200°C 300V for the 300V control circuit wiring at high-temperature routing locations source UL 3122 factory-direct from CableApex in Yangzhou — the 300V lacquered braid silicone rubber specification at 200°C / 300V under File No. E333030, with full UL compliance documentation required for equipment listing submissions.

Transformer and motor winding connections at 300V (Vietnam — industrial maintenance)

Vietnamese industrial equipment maintenance operations replacing internal wiring in transformers, motors, and heating equipment where the original equipment internal wiring is a lacquered braid silicone rubber wire at 300V specify UL 3122 to match the original construction. Imported industrial equipment using lacquered braid silicone rubber wire for the 300V internal wiring sections — a construction common in Japanese and Korean industrial equipment manufactured for the Asian market — requires UL 3122 as the replacement specification that matches the original lacquered braid silicone construction, voltage rating, and thermal performance of the original wiring.

Low-voltage sensor and instrumentation wiring in high-temperature enclosures (Vietnam)

Vietnamese industrial instrumentation and process control equipment manufacturers assembling temperature controllers, process transmitters, and industrial measurement equipment for domestic use and for export specify UL 3122 in the fine AWG range (26–22 AWG) for sensor lead wiring and signal circuit connections inside equipment enclosures where the enclosure operating temperature at the wire routing location exceeds 105°C. The 300V rating of UL 3122 covers the low-voltage DC and AC signal voltages in instrumentation circuits, and the 200°C silicone rubber insulation handles the thermal environment at the wire routing location inside the compact instrumentation equipment enclosure. The lacquered braid outer covering of UL 3122 provides the smooth, dimensionally stable surface that facilitates routing the fine AWG signal wiring through the tight internal wiring passages of compact instrumentation enclosures.

Heating appliance low-voltage control wiring (Vietnam — appliance manufacturing)

Vietnamese household and commercial appliance manufacturers in Bình Dương and Đồng Nai assembling electric ovens, food processing equipment, and commercial heating equipment for domestic sale and for export specify UL 3122 for the low-voltage control circuit wiring inside the appliance enclosure at routing locations where the ambient temperature at the wire exceeds 105°C. The thermostat signal wiring, temperature limit switch connections, and control board input wiring in a commercial electric oven operate at voltages within UL 3122’s 300V rating while routing through or adjacent to the heated enclosure sections where the ambient temperature at the wire can reach 120–160°C — requiring the 200°C silicone rubber insulation of UL 3122 rather than the 105°C PVC insulation of UL 1007 or UL 1569.

Additional applications in Vietnam

• Low-voltage control wiring in industrial heat treatment equipment — Vietnamese metalworking and materials processing facilities where control circuit wiring routes through high-temperature enclosure sections
• Signal circuit wiring in compact LED driver enclosures — Vietnamese lighting equipment manufacturers where LED driver module operating temperatures exceed 105°C at the control signal wiring routing location
• Thermocouple extension wiring inside high-temperature equipment — Vietnamese process equipment manufacturers where thermocouple extension leads route through 105–200°C thermal environments inside the equipment enclosure
• Low-voltage wiring in commercial food service equipment — Vietnamese commercial kitchen equipment manufacturers requiring 300V rated silicone rubber wire with lacquered braid for control circuit wiring in heated equipment sections

Key Features

Ordering Information

Specify AWG (26–16 AWG), conductor type (solid or stranded), colour, and quantity. MOQ 500 m per AWG. Mixed AWG orders accepted. UL 3122 compliance documentation and RoHS Declaration supplied with every order. For 600V silicone rubber wire with fibrous braid, see UL 3172. For 600V bare silicone rubber, see UL 3071. Sample from 10 m.

Why CableApex for Vietnam

CableApex manufactures UL 3122 lacquered braid silicone rubber wire under UL Follow-Up Service File No. E333030 in Yangzhou, China. Factory-direct export to Vietnam — CIF Ho Chi Minh City, 10–14 day transit. Full UL compliance documentation for equipment OEM qualification and industrial equipment maintenance procurement. No distributor margin on factory-direct orders. Contact us within 24 hours.

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