Molex Mini-Fit Jr 2-Circuit 4.2mm Power Connector (Male)

The Molex 39-01-2020 is a 2-circuit Mini-Fit Jr series male power connector with a 4.2 mm pitch, widely regarded as the global standard for internal panel power wiring, power supply to PCB assemblies, and point-of-load power distribution in industrial control panels and automation equipment. The Mini-Fit Jr series was originally developed for computer power supply applications and has since become the dominant wire-to-board and wire-to-wire power connector in industrial automation, process control, and instrumentation panel construction worldwide. The 2-circuit (2-position) male housing mates with the corresponding 39-01-2020 female housing via a positive-retention dual-latch mechanism that generates an audible click on full engagement, providing tactile and audible confirmation that the power circuit is fully made — a critical feature in panel-wiring quality control for Saudi panel shops building to IEC 61439-2 or ARAMCO GI-0036 workmanship standards.

The 39-01-2020 housing is manufactured from 30% glass-fibre reinforced nylon (PA66-GF30) rated UL94 V-0 for flame retardancy, and the contacts accept 18–24 AWG (0.20–0.82 mm²) conductors with a rated current of 9 A per circuit at 600 V — values that make this connector the natural choice for 24 V DC instrument bus connections, 120 V AC control circuit distribution, and the 12 V and 5 V logic supply rails inside intelligent relay modules and PLC backplane power supplies. The dual-beam copper alloy contacts use a normal force of 100–150 gf per beam, providing a contact resistance consistently below 10 mΩ, which is essential for maintaining accurate 24 V DC supply voltage at the end of long panel wiring harnesses in large ARAMCO DCS marshalling cabinets where voltage drop over 3–5 m of 24 AWG wire can be significant.

In the Saudi industrial panel fabrication sector, Mini-Fit Jr connectors are specified by panel OEMs building Siemens S7 PLC expansion racks, Yokogawa CENTUM I/O modules, Honeywell Safety Manager cabinets, and Allen-Bradley Logix I/O chassis for ARAMCO, SABIC, and SEC projects. The 2-circuit variant is used for point-of-load DC power distribution where individual modules or circuit boards require dedicated power feeds with the ability to be disconnected individually during maintenance — a feature that allows technicians to isolate and replace faulty I/O modules in ARAMCO control rooms without shutting down the entire panel supply. The connector's operating temperature range of -40°C to +105°C and UL94 V-0 flammability rating satisfy the component selection requirements of IEC 61439-2 for industrial assemblies operating in the high-ambient environments of Saudi summer conditions.

Razz Middle East maintains a broad inventory of Mini-Fit Jr connectors (both housing and contacts, all circuit counts) alongside the Molex 638111300 crimping tool, enabling panel shops in Jubail, Yanbu, Dammam, and Riyadh to source complete connector kits in a single order. We provide cross-reference documentation comparing Mini-Fit Jr to TE Connectivity MATE-N-LOK and JST VH series for Saudi EPC procurement teams working with multiple-source panel OEMs. SAR quotations are returned within 4 hours and local delivery is available within 24–48 hours from our Dammam and Riyadh warehouses.