Eaton EBMBB WT90EHD34 Circuit Breaker - Explosionproof
Part Number: EBMBB WT90EHD34
Quick Summary
The Eaton EBMBB WT90EHD34 circuit breaker protects electrical systems in hazardous industrial locations. Engineers face the challenge of providing reliable protection that fits into compact enclosures while meeting rigorous safety and environmental regulations. This unit delivers NEC/CEC compliance, UL hazardous-location certification, and broad NEMA ratings to tolerate demanding conditions from chemical plants to offshore platforms. By combining a rugged enclosure with a proven three-pole design, it supports consistent trip performance and simpler maintenance. In addition to its protective function, the EBMB is compatible with standard installation practices and 100A frame systems, helping speed integration and reduce total cost of ownership in safety-critical applications.
Product Information
Extended Description
EBMBB WT90EHD34 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, 90A trip, 480 Vac/250 Vdc
Product Name
Eaton Crouse-Hinds series EBMB circuit breaker
Catalog Number
EBMBB WT90EHD34
UPC
782274085531
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 1149 - Wiring
IF 1149 - Wiring
IF 1149 - Wiring
Eaton Specification Sheet - EBMBB WT90EHD34
Explosionproof EBMB design with EHD frame and bolted/ground joint/gasketed cover provides dependable protection in hazardous environments. This reduces ignition risk and helps maintain uptime in refineries, chemical plants, and offshore installations. Three-pole, common-trip configuration simplifies protection of multi-phase feeders and reduces wiring complexity, enabling faster startup and easier maintenance in control panels and switchgear assemblies. Copper-free aluminum enclosure lowers weight and improves corrosion resistance, decreasing installation time and enabling more flexible outdoor or severe-duty deployments. Enclosure with bolted/ground joint/gasketed cover delivers superior sealing, aiding long-term reliability in dusty, humid, or explosive atmospheres and reducing maintenance cycles. Rated for 480 Vac/250 Vdc with a 100A frame and 15A–100A range, the EBMB supports broader system compatibility while maintaining safe disconnect protection. NEC/CEC compliance, UL hazardous-location certification, and NEMA ratings 3, 3R, 4, 7, 9, 12 provide confidence in regulatory alignment and performance across refinery, chemical, mining, and offshore applications. Access to installation resources such as IF 1149/1150/1616 instructions, SP3D design packages, and catalogs accelerates procurement and reduces commissioning risk, making this breaker a reliable backbone for safety-first electrical protection programs.
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FAQs
Yes. The EBMB WT90EHD34 is designed for hazardous locations and supports three-pole, 100A frame installations with bolted/ground joint/gasketed enclosure. Follow installation sheets IF 1149/1150/1616 for wiring, mounting, and seal integrity, and ensure the panel rating matches Class I, Division 1 & 2 or Class II/III locations as specified.
Key specs include a 15A through 100A amperage rating, a 100A frame size, a voltage rating of 480 Vac / 250 Vdc, and a three-pole arrangement with EHD frame type. The enclosure is copper-free aluminum, and the enclosure cover is bolted/ground joint/gasketed for robust protection in harsh environments.
Yes. The unit carries NEC/CEC compliance and is designed for Hazardous/Classified Locations, with UL certification paths for hazardous environments. The enclosure and accessories are specified to meet conservation of safe operation under Class I, Division 1 and related classifications.
It carries NEC/CEC compliance, NEMA ratings including 3, 3R, 4, 7, 9, 12, and UL hazardous-location certification. Area classification is Hazardous/Classified Locations, making it suitable for demanding environments such as refineries, chemical plants, and mining sites.
Eaton provides a range of resources: SP3D design package for 3D modeling, catalogs, UL/certification reports,IF 1149/IF1150/IF1616 wiring instructions, and specification sheets. These assets help with site integration, compliance validation, and faster commissioning in safety-critical projects.