Eaton EBMBK WT400KDB36 Circuit Breaker - Explosionproof
Part Number: EBMBK WT400KDB36
Quick Summary
The Eaton EBMBK WT400KDB36 circuit breaker provides reliable overcurrent protection for explosionproof enclosures in hazardous locations. Maintaining uptime and safety in harsh environments while meeting NEC/CEC and hazardous-location standards is challenging. This device carries NEC/CEC compliance and hazardous-location ratings for Class I, II, and III areas, plus UL certifications for explosionproof service. Built for scalable protection, it supports 100 to 400 A loads in a 400 A frame with straightforward installation in industrial facilities. Coupled with its copper-free aluminum enclosure and gasketed cover, it offers corrosion resistance and enhanced sealing, reducing maintenance costs. Secondary keywords like explosionproof circuit breaker, hazardous location protection, and KDB frame compatibility align with user searches to connect buyers with a proven Eaton solution.
Product Information
Extended Description
EBMBK WT400KDB36 Eaton: Eaton Crouse-Hinds series EBMB circuit breaker, 100A through 400A, KDB frame type, Bolted/ground joint/gasketed cover construction, Copper-free aluminum, 400A frame size, Cutler-Hammer breaker, Three-pole, 400A trip, 600 Vac/250 Vdc
Product Name
Eaton Crouse-Hinds series EBMB circuit breaker
Catalog Number
EBMBK WT400KDB36
UPC
782274992488
Product Length/Depth
20.28 in
Product Height
42.65 in
Product Width
10.92 in
Product Weight
313 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
600 Vac/250 Vdc
Frame size
400A
Amperage Rating
100 A through 400 A
Manufacturer
Cutler-Hammer
Circuit breaker frame type
KDB
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 1150 - EBM Motor Control Series Combination Line Starters, Motor Starters, Circuit Breakers
IF 1150 - EBM Motor Control Series Combination Line Starters, Motor Starters, Circuit Breakers
IF 1150 - EBM Motor Control Series Combination Line Starters, Motor Starters, Circuit Breakers
Eaton Specification Sheet - EBMBK WT400KDB36
Explosionproof EBMB frame and enclosure design with a KDB configuration ensures safe operation in harsh environments. This combination reduces risk of ignition and simplifies compliance verification, translating to lower insurance costs and easier regulatory audits for petrochemical facilities and mining sites. Three-pole protection on a 400 A frame supports higher load distribution, cutting the need for multiple devices and streamlining panel design while enabling scalable upgrades as plant capacity grows. The 600 Vac / 250 Vdc rating provides flexibility across main power and DC control circuits, improving compatibility with motor drives and control systems and reducing engineering time during panel assembly. Copper-free aluminum enclosure delivers light-weight durability and corrosion resistance, extending service life in coastal or chemical environments and lowering maintenance labor. Bolted/ground joint/gasketed enclosure cover delivers a robust seal against dust, moisture, and gases, minimizing field recalls and enabling reliable operation in explosion-prone spaces. NEC/CEC compliance, UL explosionproof certification, and NEMA ratings 3, 3R, 4, 7, 9, 12 reassure specifiers and procurement teams, supporting faster approvals and reducing design risk. The EBMBK WT400KDB36 is compatible with Eaton’s EBMB family and is supported by installation guides and 3D packages, speeding up on-site commissioning and serviceability for technicians and engineers.
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FAQs
Install the EBMBK WT400KDB36 as a three-pole device in an enclosure rated for Hazardous/Classified Locations. Use the bolted/ground joint with the gasketed enclosure cover to ensure a dust and gas-tight seal. Follow the installation instructions (IF 1150 series) for mounting, torque specs, and wiring, and verify NEC/CEC compliance and UL explosionproof certification prior to energizing.
It features a 400 A frame with a 100 A through 400 A amperage rating, a three-pole configuration, and a voltage rating of 600 Vac / 250 Vdc. The unit is designed for 600 Vac mains and DC control circuits, providing robust protection for mid-to-high power applications.
Yes. The EBMBK WT400KDB36 carries NEC hazardous location ratings including Class I (Division 1 and 2), Class II (Division 1 and 2), and Class III, enabling use across a wide range of hazardous environment applications with appropriate UL certifications.
The copper-free aluminum enclosure, gasketed cover, and bolted joint design simplify sealing and corrosion resistance, reducing maintenance cycles. Its compatibility with the EBMB family and available installation resources (catalog pages, 3D models, installation sheets) speed up commissioning and future maintenance.
Choosing this model delivers regulatory compliance, enhanced protection in hazardous locations, and a scalable 400 A solution that reduces panel count and installation time. The rugged enclosure and certifications translate to lower downtime, predictable service intervals, and a lower total cost of ownership for industrial facilities.