Weidmüller 1001260000 B2L 3.50/04/180F PCB Female Plug Guide
The Weidmüller 1001260000 B2L 3.50/04/180F female plug belongs to a connector family widely used in compact PCB connection systems where reliable signal transmission and practical field wiring matter at the same time. In many control boards, interface modules, compact industrial electronics, and distributed automation assemblies, designers look for a connector that is small enough to save board space while still being comfortable to wire. That is exactly where this product fits well.
As a Weidmüller B2L 3.50/04/180F female PCB plug, this model is built around a 3.50 mm pitch and a 4-pole layout. The 180-degree cable outlet creates a straight cable path, which can be useful when wiring space above the connector is limited or when conductors need to run in line with the mating direction. Because of that geometry, the connector often suits slim housings, controller cards, signal conditioning boards, and structured cabinet layouts where orderly conductor routing is important.
Core Technical Profile
The Weidmüller 1001260000 B2L 3.50/04/180F connector is typically identified as a female plug for pluggable PCB terminal systems. Its 4-position arrangement supports compact multi-signal wiring without moving into the larger footprints associated with power-focused terminal blocks. The 3.50 mm pitch is especially relevant in electronics where engineers want a balance between density, handling comfort, and dependable contact spacing.
The straight 180-degree wire entry is one of the most practical features of this part. In real installations, that means cable routing can remain neat and predictable, especially in narrow enclosures or layered assemblies. On a PCB that sits parallel to a cabinet wall, a straight exit often makes harness planning easier and can reduce the visual clutter that comes with angled conductor paths.
Where This Product Makes Sense
The Weidmüller 1001260000 B2L 3.50/04/180F female plug is a sensible fit for signal-level board connections in industrial and commercial electronics. Typical applications include controller interfaces, I/O boards, compact monitoring devices, sensor distribution electronics, communication modules, and low-profile interface cards. It is particularly useful where users need the convenience of a pluggable connection rather than a permanently wired terminal.
That pluggable concept matters in daily maintenance. Boards can be replaced faster, test procedures become simpler, and service teams can separate field wiring from the PCB without dismantling the whole assembly. In many equipment designs, that improves maintainability and shortens downtime during troubleshooting.
Why the 3.50 mm Format Remains Popular
In the market for PCB pluggable connectors, 3.50 mm pitch remains highly relevant because it supports dense layouts without becoming too fine for practical installation work. Engineers often choose this size when they need a connector that feels more substantial than ultra-miniature signal products but still preserves valuable PCB area. That makes the Weidmüller B2L 3.50/04/180F a practical middle-ground option.
Another advantage is ecosystem compatibility. A connector like this is rarely selected in isolation. It is chosen as part of a board-to-field wiring strategy, where mating headers, enclosure geometry, service access, labeling, and wiring habits all need to align. A well-known format helps streamline that process.
Installation and Design Considerations
When integrating the Weidmüller 1001260000 B2L 3.50/04/180F PCB female plug, engineers should think about conductor routing, mating clearance, service access, and expected maintenance cycles. Straight wire entry is often ideal for horizontally organized harnesses, but it also means the surrounding design should preserve enough space for insertion and release.
Connector selection should also reflect environmental conditions, expected vibration, conductor cross-section, and the intended service life of the equipment. In compact automation products, choosing a connector that supports both organized wiring and repeatable mating behavior can make the final assembly feel much more robust in everyday use.
Weidmüller 1001260000 For more information, it is worth reviewing related Weidmüller connection solutions within the same PCB connectivity platform.
Weidmüller 1001260000 FAQ
What type of connector is Weidmüller 1001260000?
It is a pluggable female PCB plug designed for board connection systems. It is used as the cable-side component in a plug-and-header arrangement.
What does the 3.50 mm pitch indicate?
The 3.50 mm pitch refers to the spacing between adjacent poles. This dimension helps determine current application fit, PCB density, and compatibility with the corresponding mating header family.
Why choose a 4-pole connector like this?
A 4-pole layout is a practical choice for compact signal distribution, control lines, communication interfaces, and grouped low-power connections where board space is limited but structured wiring is still required.
What is the benefit of the 180-degree cable outlet?
A 180-degree outlet supports straight cable routing. That can simplify harness design, reduce bending stress near the entry point, and create a cleaner layout inside narrow housings or control modules.
Is this product mainly for signal wiring or power wiring?
It is generally more aligned with compact PCB connectivity and structured board-level wiring than with large heavy-current distribution. Actual suitability should always be checked against the full electrical design requirements.
Why do engineers prefer pluggable PCB connectors in serviceable equipment?
Because they make replacement, inspection, and maintenance easier. The wiring can remain organized while the board can be disconnected more efficiently than with fully fixed wiring methods.

