Molex Mini-Fit Jr. 4.2mm Connector Kit with 20AWG Pre-Crimped Cables — 48pcs Housings + 100pcs Wires

Molex Mini-Fit Jr. 4.2mm Connector Kit with 20AWG Pre-Crimped Cables — 48pcs Housings + 100pcs Wires

A comprehensive Molex Mini-Fit Jr. 4.2mm pitch connector kit including 48 male and female housings (5557/5559 series) plus 100 pre-crimped 20AWG wire leads in multiple pin counts. The Molex Mini-Fit Jr. is the industry standard for PC power supply connectors — the same connector used for ATX 24-pin, EPS 8-pin, and PCIe power connectors. Also widely used in industrial power electronics, motor drivers, and high-current wiring harnesses.

Kit Contents

• Male housings (5557): 2, 3, 4, 5, 6, 8, 10, 12-pin — 48pcs total
• Female housings (5559): 2, 3, 4, 5, 6, 8, 10, 12-pin
• Pre-crimped 20AWG wire leads: 100pcs (male and female terminals)

Key Specifications

• Series: Molex Mini-Fit Jr. (5557/5559) | Pitch: 4.2mm
• Wire: 20AWG pre-crimped leads
• Current rating: 9A per contact
• Locking: Yes (dual-beam latch)
• Compliance: RoHS compliant

Why Molex Mini-Fit Jr.?

• ✅ Industry standard — PC ATX/EPS/PCIe power connector series
• ✅ 9A per contact — high current capacity for power electronics
• ✅ Dual-beam latch — secure, vibration-resistant connection
• ✅ 2–12 pin — covers all common power connector configurations

Typical Applications

• PC power supply custom cable modification
• Motor driver and ESC power connector
• Industrial power electronics wiring harness
• Battery pack power connector
• High-current electronics power distribution