Eaton EFD21105 EFD Circuit Breaker - Hazardous Locations
Part Number: EFD21105
Quick Summary
Eaton EFD21105 EFD circuit breaker protects hazardous-location electrical systems in industrial plants. Facility downtime and safety risk rise when equipment isn’t properly rated for Class I Division 1 environments. This unit carries NEC/CEC certifications and hazardous-location approvals, including Class I Division 1, Class II Division 1, Class II Division 2, and Class III ratings, with compatible NEMA standards. Designed for quick installation in single-gang boxes with bolted/ground joint enclosures, it supports reliable protection and streamlined maintenance across DCS cabinets and control panels. The result is safer starts, reduced misapplication, and improved compliance for critical processes.
Product Information
Extended Description
EFD21105 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, 3/4", 120/240 Vac
Product Name
Eaton Crouse-Hinds series EFD circuit breaker
Catalog Number
EFD21105
UPC
782274033150
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
20 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 - EFD21105
Feature: Amperage rating of 20 A paired with a 3/4 in trade size and single-pole configuration. Business impact: precise protection for branch circuits minimizes nuisance trips and equipment damage. Application: ideal for control panels and feeders in hazardous locations where space is limited and reliability matters. Feature: Bolted/ground joint enclosure combined with a durable Feraloy iron alloy body. Business impact: enhanced enclosure integrity reduces ingress risk and extends service life under harsh plant conditions. Application: suitable for oil, gas, mining, and chemical processing environments. Feature: Enclosure and mounting compatibility with Square D installations and single-gang, dead-end design. Business impact: faster field upgrades, simplified retrofits, and safer, compliant installations. Application: retrofits and new builds aiming for NEC/CEC conformity and NEMA ratings 3, 7, 9, 12.
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FAQs
Install in a single-gang enclosure with a bolted/ground joint cover, using a 3/4 in trade size. Ensure the panel is configured for Class I Division 1 locations and that wiring matches 120/240 Vac ratings. The unit is designed for straightforward retrofit into Square D compatible panels, reducing field labor and risk.
Amperage rating is 20 A with a 3/4 in trade size. Voltage rating is 120/240 Vac, configured as a single-pole breaker. Enclosure is bolted/ground joint with Feraloy iron alloy body, suitable for hazardous environments and compatible with NEC/CEC standards.
Yes. It has NEC/CEC certifications and explicit hazardous-location ratings including Class I Division 1 (and related Class II/III classifications), along with corresponding NEMA ratings. This makes it appropriate for explosion-risk areas in oil, gas, and chemical processing facilities.
Area classification is Hazardous/Classified Locations. Standards type is NEC/CEC. NEC hazardous rating covers Class I Division 1 and Division 2, Class II Division 1 and Division 2, and Class III. NEMA ratings include 3, 7, 9, and 12, ensuring broad compliance and protection.
By matching NEC/CEC compliance with robust explosion-proof construction, the EFD21105 reduces field rework, minimizes downtime, and simplifies regulatory audits. Its durable enclosure and single-pole design streamline replacements in hazardous locations, lowering total cost of ownership over the product lifecycle.