Eaton EFD21106 Circuit Breaker - Explosionproof Hazardous
Part Number: EFD21106
Quick Summary
The Eaton EFD21106 circuit breaker protects electrical systems in hazardous locations. In dynamic industrial environments, downtime and noncompliant equipment translate into costly penalties and safety risks. This model carries NEC/CEC compliance, hazardous area classifications for Class I, II, III and a NEMA alignment with types 3, 7, 9, 12 to support safe operation and regulatory adherence. With bolted/ground joint cover construction, a 3/4 inch trade size, and Feraloy iron alloy enclosure, it mates easily with Square D and Eaton systems for scalable protection. Choose this solution to reduce maintenance, improve inventory commonality, and speed installation in chemical plants, refineries, and other hazardous facilities.
Product Information
Extended Description
EFD21106 Eaton: Eaton Crouse-Hinds series EFD circuit breaker, 30A, Bolted/ground joint cover construction, Feraloy iron alloy, Square D breaker, Single-gang, Single-pole, Dead end, 3/4", 120/240 Vac
Product Name
Eaton Crouse-Hinds series EFD circuit breaker
Catalog Number
EFD21106
UPC
782274033143
Product Length/Depth
3.5 in
Product Height
6.13 in
Product Width
3 in
Product Weight
7.25 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 7 9 12
Enclosure
With circuit breaker
Number of gangs
Single-gang
Style
Dead end
Amperage Rating
30 A
Trade size
3/4"
Manufacturer
Square D
Number of poles
Single-pole
Voltage rating
120/240 Vac
Enclosure cover construction
Bolted/ground joint
Enclosure material
Feraloy iron alloy
EFD and EFDC Series Explosionproof Circuit Breakers catalog page
Eaton Specification Sheet - EFD21106
Feature: 30 A amperage rating. Business Impact: Protects typical branch circuits in demanding environments, reducing the risk of nuisance trips and equipment damage. Application: Ideal for control panels and motor-start circuits in hazardous locations. Feature: 120/240 Vac voltage rating. Business Impact: Supports standard industrial power distribution without additional transformers, lowering total installed cost. Application: Use in lighting and device circuits within process areas. Feature: Enclosure of Feraloy iron alloy with bolted/ground joint construction. Business Impact: Delivers superior mechanical and corrosion resistance, enhanced sealing, and long-term reliability. Application: Suitable for explosive atmospheres where enclosure integrity is critical. Feature: Single-gang, single-pole, 3/4" trade size. Business Impact: Compact footprint simplifies panel design and supports retrofits in space-constrained enclosures. Application: Easy integration with existing Square D and Eaton installations. Feature: Certifications and ratings (Hazardous/Classified Locations; NEC/CEC; NEMA 3, 7, 9, 12). Business Impact: Ensures regulatory compliance and broad environmental suitability, reducing risk and audit findings. Application: Essential in oil & gas, chemical processing, and other high-risk industries.
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FAQs
The EFD21106 is designed for single-gang mounting with a bolted/ground joint enclosure, which helps maintain a sealed installation in Class I, II, and III environments. Verify enclosure rating, wire gauge compatibility, and clearance per NEC/CEC requirements, and plan for proper grounding to maximize protection against arc faults in explosive atmospheres.
Yes. The EFD21106 follows Eaton Crouse-Hinds lineage and is designed for cross-compatibility with Square D related components. Its 3/4" trade size and single-pole format simplify integration into existing panels and control systems, reducing retrofit time and maintaining consistent protection across platforms.
Key specs include a 30 A amperage rating, 120/240 Vac voltage rating, 3/4" trade size, single-pole single-gang configuration, and a bolted/ground joint enclosure. Such specifications support reliable fault protection in hazardous locations while enabling straightforward wiring and panel integration.
The EFD21106 supports NEC/CEC standards, area classifications for Hazardous/Classified Locations, and NEMA ratings 3, 7, 9, and 12. These certifications ensure regulatory compliance and suitability for environments such as oil & gas, chemical processing, and other demanding facilities.
The durable Feraloy iron alloy enclosure and explosionproof construction reduce corrosion and wear, leading to lower maintenance cycles. Cross-compatibility with existing Eaton and Square D equipment simplifies stocking and replacements, shortening downtime during repairs and delivering a favorable total cost of ownership in hazardous-area installations.