Eaton EBMBA WT45EHD34 Explosionproof Circuit Breaker - Hazardous/Classified Locations
Part Number: EBMBA WT45EHD34
Quick Summary
Eaton EBMBA WT45EHD34 Explosionproof circuit breaker protects hazardous-location electrical circuits. In hazardous environments, reliability and regulatory compliance are non-negotiable, and downtime is costly. UL explosionproof certification, NEC/CEC compliance, and Class I, Division 1 ratings help meet global safety standards and installation codes. The three-pole, 100 A frame supports 15 to 70 A ratings in 480 Vac/250 Vdc systems, with bolted/ground joint and gasketed cover for rugged installations. Copper-free aluminum enclosure reduces corrosion while preserving strength, and the Eaton/ Cutler-Hammer heritage delivers consistent performance with predictable maintenance costs. This combination suits oil and gas, chemical processing, and other demanding industrial environments.
Product Information
Extended Description
EBMBA WT45EHD34 Eaton: Eaton Crouse-Hinds series EBMB circuit breaker, 15A through 70A, EHD frame type, Bolted/ground joint/gasketed cover construction, Copper-free aluminum, 100A frame size, Cutler-Hammer breaker, Three-pole, 45A trip, 480 Vac/250 Vdc
Product Name
Eaton Crouse-Hinds series EBMB circuit breaker
Catalog Number
EBMBA WT45EHD34
UPC
782274948355
Product Length/Depth
14.78 in
Product Height
19.4 in
Product Width
10.25 in
Product Weight
89 lb
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class II, Division 1 Class II, Division 2 Class III Class I, Division 2
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
15 A through 70 A
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 - EBMBA WT45EHD34
Explosionproof construction with the EHD frame provides ignition-source containment, improving personnel safety and regulatory compliance. This reduces downtime and audit findings for facilities operating in Class I, Division 1 environments. It is widely used in oil and gas, petrochemical plants, and other hazardous locations. Electrical ratings and frame sizing offer 3-pole, 100A frame with 15–70 A adjustable amperage, 480 Vac/250 Vdc, enabling flexible protection for feeders and motor circuits while simplifying stocking and commissioning in large plants. The enclosure features bolted/ground joint/gasketed cover with a copper-free aluminum body, delivering corrosion resistance and reduced maintenance costs over the system’s life. It fits standard panel architectures and is supported by documented wiring instructions to expedite wiring and testing, accelerating project turnover. Certifications and standards, including NEC/CEC compliance and UL certification, support faster approvals and safer operation in regulated markets, minimizing risk during commissioning and routine inspections. The EBMB series further benefits from a robust lineage and proven performance, offering a dependable upgrade path for existing explosionproof protection in oil and gas facilities and chemical processing plants.
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FAQs
Follow the installation instructions for explosionproof assemblies and use the bolted/ground joint with the gasketed cover as specified. Verify enclosure ratings, use appropriately rated wiring methods, and reference IF 1149/IF 1616 instruction sheets during wiring and testing to ensure compliant, secure hookups in Class I, Division 1 environments.
Confirm a three-pole configuration with a 100A frame, 15–70 A amperage range, and voltage rating of 480 Vac/250 Vdc. Ensure compatibility with 480 Vac feeders and 250 Vdc control circuits, and verify the EHD frame type and enclosure construction meet your panel and environmental requirements.
Yes. The EBMB series is designed for hazardous locations and carries NEC/CEC compliance with Class I, Division 1 ratings, making it appropriate for oil and gas, chemical processing, and other demanding environments requiring explosionproof protection.
It carries UL explosionproof certification and NEC/CEC compliance, with NEC hazardous ratings including Class I, Division 1 and related classifications, plus NEMA ratings 3, 3R, 4, 7, 9, 12, ensuring regulatory alignment and broad compatibility.
The copper-free aluminum enclosure resists corrosion, extending service life and reducing maintenance costs. The proven Eaton/Cutler-Hammer lineage supports predictable performance and lower replacement risk, while documented installation and certification materials streamline approvals and ongoing compliance, contributing to faster project completion and lower total cost of ownership.