Molex Micro-Fit 3.0 4-Circuit Board Connector (Receptacle)

The Molex 43045-0400 is a 4-circuit Micro-Fit 3.0 PCB receptacle connector with a 3.0 mm pitch, designed for wire-to-board power and signal connections in space-constrained control electronics where the 4.2 mm pitch of Mini-Fit Jr is too large and the 2.5 mm pitch of Micro-Fit 3.0's smaller competitor families compromises current capacity. The Micro-Fit 3.0 series bridges the gap between board-level low-current connectors (JST SH, Molex PicoBlade) and the full power connectors (Mini-Fit Jr) by delivering 5 A per circuit at 600 V in a 3.0 mm pitch housing that is compact enough for relay module, signal converter, and temperature transmitter PCB designs common in Saudi instrument panel fabrication.

The 43045-0400 receptacle is through-hole (PCB pin-mount) with a right-angle or vertical orientation option, and the 4-circuit layout in a dual-row (2×2) configuration provides a total PCB footprint of 6 mm × 6 mm — small enough to fit multiple connector instances on a densely packed 100 mm × 160 mm Eurocard industrial PCB. The tin-plated copper alloy contacts are rated for 30 mating cycles and provide a normal force of 70–90 gf per contact, maintaining reliable connection under the low-frequency vibration found in panel installations near rotating machinery in ARAMCO pump stations and compressor buildings. The housing is moulded in UL94 V-0 rated PA66 with a positive-lock latch that must be deliberately depressed to release — preventing unintentional disconnection when cables are routed in a manner that could exert extraction force on the mated connector.

In the Saudi instrument and control panel sector, the Micro-Fit 3.0 4-circuit receptacle is used by Saudi panel OEMs building custom PCB assemblies for ARAMCO Well Test panels, SABIC process analyser shelters, and control relay modules for SEC substation protection panels. The 5 A per circuit rating accommodates 24 V DC input power (up to 120 W aggregate for 4 circuits), solenoid valve coil drive outputs, and solid-state relay input signals within the same connector family, reducing the variety of connector types that Saudi panel shops need to stock for a given project. The PCB mount receptacle also appears in the DIN-rail mount industrial relay and timer modules supplied by Phoenix Contact, Weidmüller, and FINDER as their standard internal sub-PCB connection, meaning that repair-kit procurement for these brands regularly leads to demand for Micro-Fit 3.0 parts from Razz Middle East.

Razz Middle East stocks the Molex Micro-Fit 3.0 family comprehensively including both the 43045-series PCB receptacle housings and the 43030-series wire plug housings in all circuit counts from 2 to 24 positions, along with 43031 and 43035 series contacts. We provide cross-reference tables to TE Connectivity MTA-100 and JST VH series for Saudi EPC procurement teams and can supply complete pre-assembled wire-to-board harnesses in custom lengths. Standard stock delivery is within 24 hours from our Riyadh and Dammam warehouses.