Eaton EFD31105 Circuit Breaker - Explosionproof
Part Number: EFD31105
Quick Summary
The Eaton EFD31105 circuit breaker from the Crouse-Hinds series provides reliable protection for electrical distribution in hazardous locations. This 20 A, single-pole unit uses a bolted/ground joint enclosure to withstand demanding environments while minimizing nuisance trips and downtime. It carries NEC/CEC certifications and supports hazardous area classifications including Class I Division 1 and 2, Class II Division 2, and Class III, reinforcing safety and compliance. With a 1" trade size and 120/240 Vac rating, the EFD31105 integrates with standard switchgear and installation practices, delivering business value through uptime, protection, and regulatory alignment.
Product Information
Extended Description
EFD31105 Eaton: Eaton Crouse-Hinds series EFD circuit breaker, 20A, Bolted/ground joint cover construction, Feraloy iron alloy, Square D breaker, Single-gang, Single-pole, Dead end, 1", 120/240 Vac
Product Name
Eaton Crouse-Hinds series EFD circuit breaker
Catalog Number
EFD31105
UPC
782274033266
Product Length/Depth
3.5 in
Product Height
6.13 in
Product Width
3 in
Product Weight
7.47 lb
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Division 2 Class II, Division 2 Class III Class II, Division 1
NEMA Rating
3 7 9 12
Enclosure
With circuit breaker
Number of gangs
Single-gang
Style
Dead end
Amperage Rating
20 A
Trade size
1"
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 - EFD31105
20 A amperage rating provides precise overcurrent protection, reducing arc-flash risk and limiting upstream fault currents to protect sensors and motors. This translates to lower downtime and fewer component replacements in hazardous locations. Suitable for branch circuits in industrial control panels where 20 A protection is required. The 1" trade size and single-pole configuration simplify compatibility with standard enclosures and wiring practices, enabling faster field installation and scalable protection across modular panels. Bolted/ground joint enclosure construction delivers a secure shield against dust, moisture, and explosive atmospheres, minimizing the chance of enclosure ingress and maintenance events. Feraloy iron alloy enclosure material offers excellent mechanical strength and corrosion resistance in challenging environments such as chemical plants or oil facilities, extending service life and reducing replacement cycles. Certifications and standards—NEC/CEC compliance and NEMA ratings of 3, 7, 9, and 12—support regulatory alignment and performance in a wide range of hazardous locations, lowering risk penalties and ensuring safer operation. Compatibility with single-gang enclosures and a 1" trade size streamlines installation inside existing switchgear footprints, while compatibility with Square D legacy breakers simplifies spare-part strategy and maintenance planning.
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FAQs
The EFD31105 is designed for single-gang enclosures with a 1" trade size and a bolted/ground joint enclosure. It mounts as a standard 1-pole protective device within typical switchgear, leveraging compatible Square D footprints and wiring practices. For hazardous locations, ensure the enclosure rating and wiring methods comply with Class I/II/III requirements and local NEC/CEC codes.
Key specs include a 20 A amperage rating, 120/240 Vac voltage rating, single-pole configuration, 1" trade size, and a 3.5 in length with overall height of 6.13 in and width of 3 in. It uses a bolted/ground joint enclosure with a Feraloy iron alloy housing, suitable for Hazardous/Classified Locations per NEC/CEC.
Yes. The EFD31105 is specified for Hazardous/Classified Locations with NEC/CEC compliance. It carries area classifications and hazard ratings that support Class I Division 1 and 2, Class II Division 2, and Class III environments, making it appropriate for oil, gas, chemical, and other demanding industrial settings.
The device adheres to NEC/CEC standards and is rated under NEMA 3, 7, 9, and 12. It is intended for hazardous locations with Class I/II/III classifications, ensuring regulatory alignment, safer operation, and reliable performance in challenging environments.
The EFD31105 provides robust enclosure protection and a durable Feraloy body, reducing ingress and corrosion-related downtime. Its compact, standard-form factor simplifies spare parts and field replacements, improving uptime. By meeting key NEC/CEC requirements and hazardous-location ratings, it helps reduce compliance risk and maintenance labor costs in continuous-process facilities.