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Molex Micro-Fit 3.0mm Male-Female Extension Silicone Cable — 22AWG UL3239, 200°C / 3KV / 3A
Extend any existing Micro-Fit 3.0 harness in the most demanding thermal environments. This extension cable features a Molex Micro-Fit 3.0mm male plug (43645) on one end and a Molex Micro-Fit 3.0mm female receptacle (43640) on the other, with Molex 43030-0007 contacts pre-crimped onto 22AWG UL3239 silicone wire — rated for 200°C, 3KV, and 3A. Ultra-flexible silicone insulation stays pliable even at extreme temperatures, making it the go-to choice for server cooling systems, motor wiring, and industrial power harnesses.
Why Choose This Cable?
- ✅ 200°C / 3KV / 3A rated — UL3239 silicone wire handles extreme heat where PVC fails
- ✅ Ultra-flexible silicone insulation — stays pliable in tight routing paths and high-vibration environments
- ✅ Genuine Molex 43030-0007 contacts — phosphor bronze, tin-plated, factory pre-crimped for consistent quality
- ✅ 10 wire colors available — Red, Black, Yellow, White, Blue, Green, Orange, Purple, Brown, Grey
- ✅ 10 lengths available — 10cm to 100cm, order exactly what you need
- ✅ RoHS2 / UL 94V-0 compliant — suitable for industrial, automotive and medical-adjacent applications
Technical Specifications
- Connector: Molex Micro-Fit 3.0mm | Pitch: 3.0mm
- End A: 43645 male plug | End B: 43640 female receptacle
- Contact: Molex 43030-0007, phosphor bronze, tin-plated
- Wire: 22AWG UL3239 silicone | Temperature: up to 200°C
- Voltage: 3KV | Current: 3A
- Compliance: UL3239 · UL 94V-0 · RoHS2
Package Contents
- 1× Molex Micro-Fit 3.0mm male-female extension silicone cable (color and length per variant selected)
Typical Applications
- Server and workstation power harness extension in high-temperature chassis
- Industrial motor and drive wiring in high-heat environments
- Automotive ECU and sensor harness extension
- 3D printer heated bed and hotend power extension
- Robotics and CNC machine power rail extension

