Eaton EBMBB WT40EHD34 Explosionproof Circuit Breaker - HazLoc
Part Number: EBMBB WT40EHD34
Quick Summary
EBMB circuit breakers by Eaton protect electrical systems in hazardous locations across industrial facilities. Designed for demanding environments, the WT40EHD34 combination delivers reliable protection while reducing nuisance trips and unplanned downtime. Key certifications underscore suitability for regulated settings: NEC/CEC compliance, Class I Division 1 and Class II Division 2 ratings, and compatible NEMA configurations for safe installation. With a rugged copper-free aluminum enclosure and a bolted gasketed cover, these breakers simplify field maintenance while supporting higher-frame performance and long-term cost savings. Engineers leverage the 100 A frame and three-pole design to scale protection for motor loads and distribution panels while meeting compliance, installation accuracy, and lifecycle efficiency.
Product Information
Extended Description
EBMBB WT40EHD34 Eaton: Eaton Crouse-Hinds series EBMB circuit breaker, 15A through 100A, EHD frame type, Bolted/ground joint/gasketed cover construction, Copper-free aluminum, 100A frame size, Cutler-Hammer breaker, Three-pole, 40A trip, 480 Vac/250 Vdc
Product Name
Eaton Crouse-Hinds series EBMB circuit breaker
Catalog Number
EBMBB WT40EHD34
UPC
782274062419
Product Length/Depth
14.78 in
Product Height
26.9 in
Product Width
10.25 in
Product Weight
134 lb
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Division 2 Class II, Division 1 Class II, Division 2 Class III
NEMA Rating
3 3R 4 7 9 12
Enclosure
With circuit breaker
Number of poles
Three-pole
Voltage rating
480 Vac/250 Vdc
Frame size
100A
Amperage Rating
15A through 100A
Manufacturer
Cutler-Hammer
Circuit breaker frame type
EHD
Enclosure cover construction
Bolted/ground joint/gasketed
Enclosure material
Copper-free aluminum
SP3D Design Package - EBMB Explosionproof Circuit Breakers
EBMB Series Explosionproof Circuit Breakers catalog page
EBMB Explosionproof Circuit Breakers UL certification
EBMB Explosionproof Circuit Breakers UL certification
IF 1616 - Flange Gasket Replacement Kit
IF 1616 - Flange Gasket Replacement Kit
IF 1616 - Flange Gasket Replacement Kit
Eaton Specification Sheet - EBMBB WT40EHD34
Feature: Three-pole construction with a 100 A frame and an amperage range of 15 A through 100 A. Business Impact: simplifies coordination of protective devices and reduces panel complexity for multi-motor loads. Application: ideal for manufacturing lines and process feeders requiring dependable trip protection. Feature: Copper-free aluminum enclosure with bolted/ground joint/gasketed cover. Business Impact: improved corrosion resistance and seals for hazardous environments, lowering maintenance costs. Application: chemical plants, oil & gas, mining installations where dust and moisture are concerns. Feature: Rating of 480 VAC / 250 VDC with EHD frame in a 100 A class. Business Impact: supports mixed AC/DC protection for motors and feeders, reducing parts diversity and installation time. Application: control panels and motor control centers in heavy industry. Feature: NEC/CEC compliance plus hazardous-area approvals (Class I/II/III) and NEMA ratings 3, 3R, 4, 7, 9, 12. Business Impact: accelerates regulatory approvals and documentation, lowering project risk. Application: oil, gas, mining, and chemical processing sites where formal certification matters. Feature: Comprehensive documentation and downloadable assets (3D models, catalogs, installation sheets, spec sheets). Business Impact: speeds design, procurement, and field deployment, reducing engineering lead times. Application: engineering offices, EPCs, and field service teams needing precise specs.
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FAQs
This model is designed for hazardous and classified locations, with NEC/CEC compliance and Class I Division 1, Class I Division 2, Class II Division 1, Class II Division 2, and Class III ratings. It is suitable for oil and gas facilities, chemical plants, and mining environments, with a three-pole design that supports motor protection and feeder distribution in rugged settings.
The EBMB WT40EHD34 carries NEC/CEC compliance, NEC hazardous ratings (Class I Div 1 & 2, Class II Div 1 & 2, Class III), and a NEMA range of 3, 3R, 4, 7, 9, 12. It is approved for Hazardous/Classified Locations, offering documented reliability for challenging industrial installations.
The breaker is rated for 480 VAC / 250 VDC, with a 100A frame size and amperage range from 15A to 100A. It is a three-pole unit within the EHD frame family, designed for durable performance in demanding motor and feeder applications.
The enclosure uses copper-free aluminum with bolted/ground joint/gasketed cover construction, delivering corrosion resistance and robust sealing in hazardous environments. This design reduces ingress of dust and moisture, simplifies field maintenance, and enhances worker safety during servicing in classified locations.
Compatibility with three-pole, 100A frame systems streamlines panel design and motor protection coordination. The rugged enclosure and certified ratings enable faster regulatory approvals and safer operation, while reduced nuisance trips and longer service life contribute to lower lifecycle costs and improved total cost of ownership for plants and EPC projects.