Weidmüller 1005290000 BCZ 3.81 AH04 BK BX for 4-Pole PCB Connector Protection
The Weidmüller 1005290000 BCZ 3.81 AH04 BK BX cover hood is designed for PCB plug-in connector systems that need a matched accessory rather than a generic protective part. In electronic devices and control assemblies, connector accessories can have a measurable effect on handling quality, installation discipline, and long-term usability. When the connector family is modular, choosing the right pole-specific hood helps keep the whole interface mechanically consistent.
Weidmüller identifies the Weidmüller BCZ 3.81 AH04 BK BX PCB plug-in connector hood as a black accessory hood for the OMNIMATE Signal BC/SC 3.81 series. This model is intended for 4 poles, with a 3.81 mm pitch, box packaging, a net weight of around 2.2 g, and a cover screw tightening torque of 0.4 to 0.5 Nm. It is listed as RoHS compliant and without REACH SVHC above 0.1 wt%.
Why a 4-Pole Connector Hood Has a Specific Purpose
The Weidmüller 1005290000 BCZ 3.81 AH04 BK BX 4-pole cover hood is not just a cosmetic add-on. It is dimensionally aligned with a 4-pole connector footprint in the BC/SC 3.81 platform. That precision matters because PCB connector systems rely on accurate housing geometry for fit, screw positioning, and predictable mechanical integration.
Using a dedicated hood can support a more secure and complete connection interface. It can also help users and service technicians handle the connector area more confidently during installation, replacement, or inspection.
Technical Context Within the OMNIMATE Signal Range
The BC/SC 3.81 family is part of Weidmüller’s OMNIMATE Signal range, which is aimed at structured board-to-wire connectivity. The Weidmüller BCZ 3.81 AH04 BK BX hood works within that design logic by providing a family-matched accessory for a 4-pole plug-in connector position. The 3.81 mm pitch is an important reference because it confirms the hood belongs to a specific connector dimension set rather than a universal housing format.
The specified 0.4 to 0.5 Nm tightening torque for the cover screw also shows that controlled installation is expected. That supports repeatability, which is particularly relevant in production environments where connector assemblies are built in volume.
Why Small Accessory Choices Affect Product Quality
In electronics manufacturing, accessory parts often shape the everyday usability of the final product. The Weidmüller 1005290000 BCZ 3.81 AH04 BK BX connector hood helps create a more finished connection interface, which can support improved protection, easier handling, and a more robust product impression overall. Even though it is a small part, it belongs to the category of details that make assemblies easier to work with over time.
This is particularly relevant in industrial electronics, building automation devices, interface modules, and compact control products where connections may be accessed more than once throughout the product lifecycle.
Application Perspective
A Weidmüller 1005290000 BCZ 3.81 AH04 BK BX cover hood is a sensible fit for PCB connector applications that use a 4-pole BC/SC 3.81 plug-in interface. It is appropriate in OEM electronics, controller boards, signaling devices, measurement systems, and modular industrial electronics where connector protection and assembly consistency are both relevant design concerns.
Weidmüller 1005290000 For more information about Weidmüller, it is useful to compare connector and accessory families together rather than selecting PCB plugs and hoods separately.
Weidmüller 1005290000 FAQ
What is the main function of the Weidmüller 1005290000 BCZ 3.81 AH04 BK BX?
Its main function is to act as a cover hood for protecting a 4-pole PCB plug-in connector in the OMNIMATE Signal BC/SC 3.81 family.
Why is a 4-pole-specific hood necessary?
Because PCB connector accessories must match the exact connector geometry they are intended for. A 4-pole hood is sized and aligned for a 4-pole connector layout.
What family does this product belong to?
It belongs to the OMNIMATE Signal BC/SC 3.81 family, which is a Weidmüller PCB connector platform with 3.81 mm pitch.
What tightening torque is specified?
The cover screw torque is specified at 0.4 to 0.5 Nm. This helps installers achieve a controlled and repeatable assembly result.
Is the product RoHS compliant?
Yes. The official product data lists it as RoHS compliant, which is relevant for product compliance and procurement documentation.
Where is this hood commonly used?
It is commonly used in compact electronics, industrial control devices, building systems, and modular PCB-based products that use pluggable 4-pole board connectors.