ABB 7129.120 Extension Ring - Plaster compensation ring
Part Number: 7129.120
Quick Summary
ABB 7129.120 Extension Ring is a plaster compensation ring designed for flush mounting in built-in installation boxes. When wiring enclosures on brick walls, uneven surfaces and limited clearance can ruin finish and delay projects; this accessory delivers a precise 6 mm compensation and stackable compatibility to streamline installation. It carries CE certification, REACH declaration, and CMRT for responsible sourcing, with WEEE considerations addressed. As a cost-efficient, install-friendly solution, it complements ABB wall boxes and flush-mounted junction boxes, supporting faster assembly for standard enclosure projects and improving overall project reliability.
Product Information
Extended Description
7129.120 ABB: Compensation ring 6 mm, stackable for wall junction box
Application
Built-in installation box (device box)
Suitable For
Flush mounted brick wall junction boxes
Accessory Type
Extension Ring
Mounting Type
Flush mounting
Product Type
HW52-F
Shape
Round
Number of Batteries
0
REACH Declaration
REACH Declaration ABB BV, Ede
REACH Information
False - does not contain substances > 0.1 mass percentage
REACH Date
20230911
Conflict Minerals Reporting Template (CMRT)
Conflict Minerals Reporting Template
WEEE Category
Product Not in WEEE Scope
Environmental Information
Declaration regarding the REACH - Regulation
Product Net Width
37.000 mm
Product Net Height
35.000 mm
Product Net Depth / Length
50.000 mm
Product Net Weight
0.006 kg
Package Level 1 Units
bag 50 piece
Package Level 1 Gross Weight
0.36 kg
Declaration of Conformity - CE
Declaration regarding the REACH - Regulation
Data Sheet, Technical Information
WebCatalog_Consumer Units and Junction Boxes
ETIM 8
EC000115 - Plaster compensation ring
ETIM 9
EC000115 - Plaster compensation ring
eClass
V11.0 : 27144411
Object Classification Code
Not applicable
Feature: 6 mm plaster compensation and stackable design → Business Impact: Enables precise alignment and repeatable mounting across multiple boxes, reducing rework and installation time → Application: Ideal for brick-wall junction boxes in new build or retrofit projects. Feature: Suitable for flush mounted brick wall junction boxes and round shape HW52-F → Business Impact: Standardizes configurations, minimizes gaps, and improves aesthetics and safety in crowded electrical enclosures → Application: Perfect for professional installations where finish quality matters. Feature: REACH Declaration, CE Declaration, CMRT and WEEE considerations → Business Impact: Ensures regulatory compliance and supply-chain transparency, mitigating risk and audit concerns → Application: Essential for industrial projects with strict regulatory requirements. Feature: Product dimensions and weight (37x35x50 mm, 0.006 kg) and packaging (bag 50 piece) → Business Impact: Simplifies inventory planning, stocking, and logistics for large projects → Application: Streamlines procurement and reduces packaging waste. Feature: Compatibility with built-in installation boxes and flush mounting → Business Impact: Improves compatibility across ABB enclosures, lowering selection errors and post-install adjustments → Application: Supports efficient retrofits and new installations. Objection handling: If fit with non-ABB boxes is required, verify box dimensions and mounting tolerances against the HW52-F footprint; when in doubt, pair with ABB extension rings designed for precise wall junction box alignment to maintain finish and compliance.
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FAQs
The ABB 7129.120 is designed to sit between the device box and the enclosure face, providing 6 mm compensation for flush mounting. Align the ring with the box’s mounting holes, stack as required for the wall thickness, and secure with the enclosure’s standard fasteners. Verify fitment against the HW52-F specification to ensure a neat finished surface.
Key dimensions are 37.000 mm width, 35.000 mm height, and 50.000 mm depth, with a weight of 0.006 kg. It is shaped round and categorized as a plaster compensation ring (HW52-F). It’s compatible with flush-mounted brick-wall junction boxes and built-in installation boxes to achieve a clean, professional finish.
Yes. The product includes a CE declaration and REACH information, confirming regulatory compliance. ABB also provides a CMRT for responsible sourcing and notes that the item is not within WEEE scope, supporting compliant disposal and recycling in industrial environments.
The 6 mm compensation allows precise alignment on brick walls with uneven surfaces, reducing the need for field modifications. Its stackable design simplifies accommodating varied wall thicknesses, which shortens install time and improves the overall finish of flush-mounted installations in device boxes.
By reducing rework and ensuring consistent flush mounting, the ABB extension ring lowers labor costs and rework risk. The standardized hardware supports faster procurement, predictable lead times, and easier inventory management, delivering measurable productivity gains on larger enclosure projects.