Eaton TWB1 Thru-Wall Barrier - UL Certified Sealing Block
Part Number: TWB1
Quick Summary
TWB1 is an Eaton Crouse-Hinds thru-wall barrier sealing block assembly that protects cable and conduit penetrations in electrical enclosures. Engineers often confront moisture ingress, dust intrusion, and flame spread at openings, which can slow commissioning and raise maintenance costs. UL certification for firestop devices in US and Canada, combined with an Ordinary/Non-Hazardous Locations classification, supports code-compliant installations. The elastomeric material and a compact, 1-frame-space design streamline installation and improve sealing reliability across wiring and connectivity panels. In practice, this TWB1 translates to faster commissioning, reduced leak risk, and better long-term performance in industrial control and distribution enclosures, delivering tangible procurement value and predictable ROI.
Product Information
Extended Description
TWB1 Eaton: Eaton Crouse-Hinds series Thru-Wall Barrier TWB sealing block assembly, Elastomeric, 1 frame spaces required
Product Name
Eaton Crouse-Hinds series Thru-Wall Barrier TWB sealing block assembly
Catalog Number
TWB1
UPC
782274192239
Product Length/Depth
11.38 in
Product Height
3.25 in
Product Width
7.25 in
Product Weight
4.78 lb
Area classification
Ordinary/Non-Hazardous Locations
Number of frame spaces required
1
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 - TWB1
Elastomeric material feature → Provides a resilient, flexible seal that maintains performance across temperature variations and enclosure movement, reducing moisture and dust ingress and extending service life. Business impact → Improves reliability of cable and conduit penetrations, lowering maintenance costs and downtime; Application → Ideal for wiring and connectivity enclosures in industrial panels where tight sealing is essential. 1 frame space requirement feature → Enables compact installation within standard TW series layouts, reducing enclosure depth and simplifying panel design. Business impact → Speeds up installation and reduces field rework; Application → Useful when panel space is constrained or when retrofitting existing systems. Precise dimensions and weight feature → 11.38 in length, 3.25 in height, 7.25 in width, and 4.78 lb weight provide predictable fits in standard enclosures. Business impact → Simplifies layout planning, shipping, and handling; Application → Supports accurate BOMs and faster procurement for control panels. UL certification and location classification feature → US/Canada UL firestop certification with Ordinary/Non-Hazardous Locations classification. Business impact → Ensures regulatory compliance and reduces risk of non-conformance audits; Application → Crucial for panels in non-hazardous environments where certified firestop performance matters. Documentation and installation support feature → Access to IF 840B instruction sheets and Eaton specification sheets. Business impact → Minimizes installation errors and accelerates technician onboarding; Application → Ideal for maintenance teams and contractor procurement where standard install guides are referenced.
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FAQs
TWB1 is designed to seal cable and conduit penetrations in electrical enclosures that accommodate the TW series barrier components and require a single frame space. It fits standard installation footprints used in control panels and wiring enclosures, aiding fast, compliant retrofits and new builds.
Key specs include an elastomeric seal material, 11.38 in length, 3.25 in height, 7.25 in width, weight 4.78 lb, catalog number TWB1, and one frame-space requirement. These dimensions and material choice support dependable sealing in ordinary/non-hazardous locations and align with UL firestop certification expectations.
TWB1 is certified for Ordinary/Non-Hazardous Locations. It should not be used in hazardous environments where special firestop and sealing products are required. For hazardous locations, consult the UL listings and Eaton guidance for alternative products.
TW B1 is supported by installation and specification documentation, including IF 840B instruction sheets and Eaton specification sheets. These resources guide correct installation, ensure compliance with through-wall sealing practices, and help technicians avoid common installation errors.
By delivering reliable elastomeric sealing, 1-frame-space efficiency, and UL-certified performance, TWB1 reduces leakage risks, accelerates commissioning, and lowers maintenance costs over the life of the enclosure. The availability of catalogs and datasheets also streamlines procurement and lifecycle planning for industrial automation projects.