Eaton TWBS40366 Thru-Wall Barrier - Marine applications
Part Number: TWBS40366
Quick Summary
TWBS40366 is a thru-wall barrier sealing block assembly for marine electrical enclosures. It provides a robust elastomeric seal around cable and conduit openings while fitting within compact four-frame spaces. Engineers often battle leak paths, corrosion risk, and fragmented certifications in harsh environments; this block addresses those challenges with a defined 2.000-2.250 inch opening range and three openings in the block. UL certifications for firestop devices, plus Canada and hazard-location considerations, help ensure code compliance across regions. Designed to integrate with Crouse-Hinds TWB components, it offers reliable performance, installation simplicity, and long-term cost savings for marine and non-marine installations alike.
Product Information
Extended Description
TWBS40366 Eaton: Eaton Crouse-Hinds series Thru-Wall Barrier TWB sealing block assembly, Elastomeric, 4 frame spaces required, 3 openings in block, Opening size range: 2.000-2.250", For marine applications
Product Name
Eaton Crouse-Hinds series Thru-Wall Barrier TWB sealing block assembly
Catalog Number
TWBS40366
UPC
782274277288
Product Length/Depth
13.5 in
Product Height
4.5 in
Product Width
7.88 in
Product Weight
15.51 lb
Area classification
Ordinary/Non-Hazardous Locations
Opening size range
2.000-2.250"
Number of openings in block
3
Number of frame spaces required
4
Material
Elastomeric
Type
For marine applications
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 1020 - TWBS Sealing Block for TW series Thru-Wall Barrier
Eaton Specification Sheet - TWBS40366
Feature → Elastomeric sealing block with three openings and four frame spaces provides a compact, robust seal that reduces potential leak paths and simplifies installation in tight enclosures. Business Impact → Improves sealing integrity, lowers warranty risks, and shortens commissioning time, delivering measurable OPEX savings during maintenance cycles. Application → Ideal for marine electrical enclosures and equipment racks where space is at a premium and reliability is critical.Feature → Opening size range of 2.000-2.250 inches ensures standardization for multiple cables without custom adapters. Business Impact → Reduces field modifications, accelerates field installs, and decreases project risk. Application → Suits common power and control cabling entries in industrial and maritime settings.Feature → Elastomeric material delivers moisture and salt spray resistance. Business Impact → Extends service life in aggressive environments, lowering total cost of ownership. Application → Suitable for Ordinary/Non-Hazardous Locations in salt-rich or humid facilities.Feature → UL certifications and multi-region listings provide compliance with firestop and hazardous-location requirements. Business Impact → Streamlines procurement audits and speeds regulatory approvals. Application → Supports global projects with unified sealing devices.Feature → Compatibility with TWB series and installation instructions (IF 1020) enable seamless integration and clear maintenance guidance. Business Impact → Reduces training time for technicians and minimizes misinstallation risk. Application → Works across new builds and retrofits in marine and industrial plants.
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FAQs
TWBS40366 is designed to pair with Eaton Crouse-Hinds TWB components, using the IF 1020 instruction sheet to guide sealing block installation. Its 4 frame spaces and 3 openings align with standard TWB modules, enabling straightforward retrofits in ordinary and non-hazardous locations.
The block accommodates openings in the 2.000 to 2.250 inch range and features three openings within the sealing block. Four frame spaces are required for installation, delivering a predictable sealing footprint for multi-cable entries.
Yes, TWBS40366 is specified for marine applications and carries UL certifications for firestop devices, with eligibility listings for Canada and hazardous-location considerations. This helps meet industry and regional codes for maritime and industrial environments.
Elastomeric sealing blocks provide moisture and salt spray resistance, reducing corrosion risk and sealing degradation. This translates to longer service intervals, lower maintenance costs, and improved enclosure integrity in marine and humid facilities.
Beyond meeting regulatory requirements, the TWBS40366 assembly reduces field modifications, shortens installation time, and lowers total cost of ownership by enhancing sealing performance, compatibility with TWB systems, and ease of future replacements.