Eaton TWB3 Thru-Wall Barrier Sealing Block - UL-Cert
Part Number: TWB3
Quick Summary
Eaton TWB3 is a thru-wall barrier sealing block assembly for protecting cables in industrial enclosures. This design addresses sealing failures at cable entries that can lead to leaks, downtime, and costly firestop remediation. It carries UL certifications for firestop and conduit sealing in North America, with compliance suitable for ordinary/non-hazardous locations, and utilizes elastomeric sealing and a 3-frame-space layout to maintain integrity under vibration and temperature changes. The product aligns with TW series installation practices, supported by Eaton’s specification sheets and installation instructions, ensuring consistent performance. By combining robust materials with straightforward installation, this solution delivers faster commissioning, reduced maintenance, and long-term cost savings for plant engineers and procurement teams.
Product Information
Extended Description
TWB3 Eaton: Eaton Crouse-Hinds series Thru-Wall Barrier TWB sealing block assembly, Elastomeric, 3 frame spaces required
Product Name
Eaton Crouse-Hinds series Thru-Wall Barrier TWB sealing block assembly
Catalog Number
TWB3
UPC
782274192246
Product Length/Depth
2.38 in
Product Height
9.38 in
Product Width
3 in
Product Weight
19.65 lb
Area classification
Ordinary/Non-Hazardous Locations
Number of frame spaces required
3
Material
Elastomeric
Crouse-Hinds series Thru-Wall Barrier Cable and Conduit Sealing Device catalog page
Thru-Wall Barrier Cable and Conduit Sealing Device UL certification
Thru-Wall Barrier Cable and Conduit Sealing Device UL certification
Thru-Wall Barrier Cable and Conduit Sealing Device UL certification
IF 840B - TWB Sealing Block for TW series Thru-Wall Barrier
IF 840B - TWB Sealing Block for TW series Thru-Wall Barrier
Eaton Specification Sheet - TWB3
Elastomeric sealing material provides durable protection against dust, moisture, and mechanical movement, reducing ingress and extending maintenance intervals. This translates to measurable improvements in equipment reliability and lower total cost of ownership for cable and conduit penetrations. The 3 frame spaces design enables higher cable density without compromising seal integrity, supporting efficient panel and enclosure layouts in busy production environments. UL certifications for firestop and conduit sealing in ordinary/non-hazardous locations give project teams confidence in regulatory compliance and installation risk management. Dimensions of 2.38 in depth, 9.38 in height, and 3 in width with a weight of 19.65 lb allow precise layout planning and predictable space requirements on drawings. Availability of installation resources such as IF 840B sheets and the Eaton TWB3 spec sheet simplifies procurement, reduces field questions, and speeds turnover. The TWB3 integrates smoothly with TW series components, enabling quicker commissioning and easier future rework, while minimizing downtime during plant expansion or relocation projects.
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FAQs
TWB3 is designed to work with Eaton Crouse-Hinds TW series through-wall barrier components. It uses a 3 frame spaces configuration and is installed per the IF 840B instruction sheets and the TWB3 specification sheet. Ensure enclosure dimensions accommodate 2.38 in depth, 9.38 in height, and 3 in width, then secure the sealing block with the approved fasteners and route cables through the three frame spaces for optimal sealing performance.
Catalog Number TWB3; UPC 782274192246; Product Length/Depth 2.38 in; Product Height 9.38 in; Product Width 3 in; Product Weight 19.65 lb; Material Elastomeric; Number of frame spaces required 3; Area classification Ordinary/Non-Hazardous Locations. These specs guide layout, capacity planning, and compliance considerations for non-hazardous environments.
TWB3 is best suited for through-wall cabinet and enclosure penetrations in industrial facilities, data centers, and other non-hazardous environments where reliable cable and conduit sealing is required. Its elastomeric seal and 3-frame-space design support tight, durable barriers in spaces with vibration, thermal cycling, or frequent access, helping maintain enclosure integrity.
TWB3 carries UL certification for firestop and conduit sealing devices in North America, with applicable references in UL certification reports. It is suitable for Ordinary/Non-Hazardous Locations and aligns with installation best practices documented by Eaton, including installation instructions and specification sheets to support compliant deployment.
The elastomeric gasket reduces ingress and maintenance needs, while the 3-frame-space design optimizes cable density and enclosure planning. UL-certification lowers risk and auditing time, and readily available installation resources accelerate commissioning, reducing field labor costs and unplanned downtime during upgrades or expansions.