Eaton EIBB3040 Circuit Breaker - Explosionproof, 600 Vac
Part Number: EIBB3040
Quick Summary
The Eaton EIBB3040 circuit breaker protects electrical systems in hazardous locations across industrial facilities. Maintenance teams often struggle with explosionproof devices that complicate wiring and field service, increasing downtime. This unit is NEC/CEC compliant and rated for Hazardous/Classified Locations, including Class I Division 1 and Zone 1 protection, plus compatible NEMA 3, 3R, 4, 7 and 9 enclosures. With its EG frame and copper-free aluminum enclosure, it simplifies installation and supports safer, more reliable operation while delivering cost efficiency.
Product Information
Extended Description
EIBB3040 Eaton: Eaton Crouse-Hinds series EIB circuit breaker, 40A, EG frame type, Bolted/ground joint cover construction, Copper-free aluminum, Cutler-Hammer breaker, Three-pole, 600 Vac
Product Name
Eaton Crouse-Hinds series EIB circuit breaker
Catalog Number
EIBB3040
UPC
662276068506
Product Length/Depth
12.53 in
Product Height
16.53 in
Product Width
9.75 in
Product Weight
60 lb
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Zone 1 Class I, Division 2 Class I, Zone 2 Class II, Division 1 Class III
NEMA Rating
3 3R 4 7 9
Enclosure
With circuit breaker
Amperage Rating
40 A
Voltage rating
600 Vac
Number of poles
Three-pole
Circuit breaker frame type
EG
Enclosure cover construction
Bolted/ground joint
Enclosure material
Copper-free aluminum
Manufacturer
Cutler-Hammer
SP3D Design Package - EIB Explosionproof Compact Circuit Breakers
EIB Series Explosionproof Compact Circuit Breakers flyer
EIB Series Explosionproof Compact Circuit Breakers catalog page
EIB Explosionproof Compact Circuit Breakers Canadian certification
EIB Explosionproof Compact Circuit Breakers Canadian certification
IF 1501 - EIB Series Circuit Breakers and Enclosures
Eaton Specification Sheet - EIBB3040
The EIBB3040’s 40 A three-pole design delivers robust overcurrent protection for demanding feeders in hazardous environments. The copper-free aluminum enclosure reduces weight and corrosion exposure, improving longevity in offshore and chemical plants. Bolted/ground joint enclosure construction enables a tight seal and easier field maintenance, cutting downtime and upgrade costs. The EG frame type provides standardized mounting and compatibility with Eaton’s explosionproof enclosures, streamlining panel integration and spare-part planning. NEC/CEC compliance plus NEMA ratings offer fast approvals and reduced risk during audits, while easy access to installation instructions and documentation supports accelerated commissioning. In practice, installers see lower maintenance costs, safer operation, and predictable performance across widespread hazardous-location applications.
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FAQs
Select a compliant hazardous-location enclosure with Class I Division 1/2 or Zone 1/2 ratings and a proper IP rating. Use the bolted/ground joint cover to seal the enclosure, and install the three-pole EG-frame breaker in the panel with copper-free aluminum construction. Follow torque specs and Eaton installation instructions to ensure safe field wiring, ease of maintenance, and quick part replacement.
The EIBB3040 is NEC/CEC compliant and rated for Hazardous/Classified Locations, including Class I Division 1 and Zone 1, with additional Class II and Class III considerations. It carries NEMA ratings 3, 3R, 4, 7, 9 for enclosure protection, and operates at 600 Vac to deliver reliable overcurrent protection in harsh environments.
Yes. The EIBB3040 uses the EG frame and bolted/ground joint enclosure designed for Eaton Crouse-Hinds EIB systems, ensuring straightforward integration into standard Crouse-Hinds enclosures and compatible panels. Its dimensions—12.53 in depth, 16.53 in height, 9.75 in width—enable predictable fitment and smoother procurement.
Ideal for chemical plants, oil and gas facilities, mining operations, and other hazardous locations requiring reliable 40 A, 600 Vac protection in a three-pole configuration. The rugged explosionproof design supports demanding feeders, motor circuits, and protection schemes in harsh environments.
The copper-free aluminum enclosure resists corrosion, reducing maintenance frequency in aggressive atmospheres. Bolted/ground joint covers simplify sealing and service access, lowering downtime. NEC/CEC compliance and UL certifications streamline approvals, while standardized EG-frame mounting and documented installation sheets shorten commissioning time and total cost of ownership.