Eaton TWBS3045 Thru-Wall Barrier - UL Certified
Part Number: TWBS3045
Quick Summary
Eaton TWBS3045 Thru-Wall Barrier sealing block isolates openings in marine-rated walls for cable and conduit penetrations. Installers often battle unreliable seals and tight space constraints, and misalignment can trigger leaks or slowdowns. UL certifications for through-wall sealing devices in the US and Canada underpin safety and compliance, while the ordinary/non-hazardous location rating clarifies where it’s suitable. Built for reliability, this unit uses elastomeric sealing and a fixed 3 frame-space arrangement with four openings to simplify field installs while reducing rework. The design complements standard TW series components and installation sheets, enabling faster procurement cycles and predictable performance in industrial, maritime, and non-hazardous electrical environments.
Product Information
Extended Description
TWBS3045 Eaton: Eaton Crouse-Hinds series Thru-Wall Barrier TWB sealing block assembly, Elastomeric, 3 frame spaces required, 4 openings in block, Opening size range: 1.250-1.500", For marine applications
Product Name
Eaton Crouse-Hinds series Thru-Wall Barrier TWB sealing block assembly
Catalog Number
TWBS3045
UPC
782274277257
Product Length/Depth
11.38 in
Product Height
3.25 in
Product Width
7.25 in
Product Weight
13.66 lb
Area classification
Ordinary/Non-Hazardous Locations
Opening size range
1.250-1.500"
Number of openings in block
4
Number of frame spaces required
3
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 - TWBS3045
Elastomeric sealing material provides a durable, moisture- and salt-resistant barrier that improves long-term reliability and minimizes gasket failures in harsh environments, delivering measurable maintenance savings and fewer field reworks in marine penetrations. The four openings (1.250-1.500 inches) support multiple cables through a single block, reducing material costs and installation time while enabling cleaner cable management in tight spaces. With three fixed frame spaces, alignment is standardized across assemblies, accelerating installation and ensuring consistent performance in rugged environments. The compact 11.38 inch length, 7.25 inch width, and 3.25 inch height combined with 13.66 lb weight strike a balance between robust protection and manageable handling during deck or bulkhead installations. Compatibility with TW series components and the provided installation literature further shorten procurement and deployment cycles.
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FAQs
TWBS3045 is designed for Eaton Crouse-Hinds TW series through-wall barrier systems with four openings and three frame spaces. It fits standard frame assemblies used in ordinary locations and marine panels. Installation should follow the IF 1020 instruction sheet: verify opening range between 1.250 and 1.500 inches, align with three frame spaces, secure the sealing elastomer, and complete cable or conduit penetrations per the catalog and datasheet to ensure a reliable seal.
Key specifications include an opening size range of 1.250–1.500 inches, four openings, and three frame spaces. The block measures 11.38 inches long, 7.25 inches wide, and 3.25 inches high, weighing 13.66 pounds. The material is elastomeric, and the unit is intended for marine applications and ordinary/non-hazardous locations, contributing to predictable sealing and installation compatibility.
Yes. The TWBS3045 is specified for marine applications and uses elastomeric seals designed to maintain integrity in saltwater and humid conditions. Its area classification indicates Ordinary/Non-Hazardous Locations, making it suitable for protected marine panels, bulkheads, and other non-hazardous areas where robust sealing is required.
TWBS3045 carries UL certifications for through-wall barrier sealing devices, with listings applicable to US and Canadian installations. These certifications support firestop and electrical safety requirements, and you can reference UL certification pages and installation literature for compliance specifics and installation guidance.
Documentation includes the IF 1020 installation sheet, the Crouse-Hinds TW series catalog page, and the Eaton TWBS3045 specification sheet. These resources help ensure correct installation, minimize rework, streamline procurement, and shorten commissioning times, delivering measurable project efficiency and cost savings.