Eaton EFDC21104 SA EFD circuit breaker - Hazardous/Classified Locations
Part Number: EFDC21104 SA
Quick Summary
Eaton EFDC21104 SA EFD circuit breaker protects electrical equipment in hazardous locations across industrial facilities. Maintenance teams often struggle with downtime and safety risks in explosive atmospheres, but this unit’s through-feed design reduces wiring complexity and fault exposure. It is certified for NEC/CEC compliance and suitable for Hazardous/Classified Locations, including Class I, Division 1 and Class II, Division 2 environments, with additional NEMA ratings for rugged protection. The combination of a single-pole, 15 A rating and a copper-free aluminum enclosure delivers reliable protection while keeping installation straightforward. In short, this breaker supports safer, compliant, and cost-effective control-panel protection for demanding industrial settings.
Product Information
Extended Description
EFDC21104 SA Eaton: Eaton Crouse-Hinds series EFD circuit breaker, 15A, Bolted/ground joint cover construction, Copper-free aluminum, Square D breaker, Single-gang, Single-pole, Through feed, 3/4", 120/240 Vac
Product Name
Eaton Crouse-Hinds series EFD circuit breaker
Catalog Number
EFDC21104 SA
UPC
782274572321
Product Length/Depth
3.5 in
Product Height
7.13 in
Product Width
5 in
Product Weight
4 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
Through feed
Amperage Rating
15 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
Copper-free aluminum
EFD and EFDC Series Explosionproof Circuit Breakers catalog page
Eaton Specification Sheet - EFDC21104 SA
Feature → Business Impact → Application: Through-feed enclosure with bolted/ground joint construction reduces ingress paths and improves field reliability in hazardous locations, delivering safer, longer-lasting protection for critical control circuits in chemical plants and refineries. Application: Ideal for explosion-proof protection in equipment racks and switchgear in facilities with stringent safety codes. Feature → Business Impact → Application: Copper-free aluminum enclosure lowers weight while maintaining strength, cutting handling time on site and simplifying compliance with material restrictions in regulated environments. Application: Suitable for portable or fixed control panels in heavy industry where corrosion resistance is essential. Feature → Business Impact → Application: Single-gang, single-pole design with 3/4" trade size and 15 A rating simplifies panel layout and reduces wiring complexity, enabling faster commissioning of 120/240 VAC systems. Application: Common in motor control centers and machines with small, critical control circuits. Feature → Business Impact → Application: 120/240 VAC operating voltage and through-feed style support versatile wiring schemes, minimizing downtime during upgrades or replacements. Application: Widely used in process automation and packaging lines where quick, reliable protection is required. Feature → Business Impact → Application: NEC/CEC compliance and NEMA ratings 3, 7, 9, 12 provide compliance assurance and environmental ruggedness, reducing risk of non-compliance penalties and service interruptions. Application: Essential for electrical protection in hazardous-location facilities like refineries and offshore platforms.
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FAQs
Yes, EFDC21104 SA is a single-pole through-feed breaker designed for common 3/4" trade size enclosures and single-gang installations. Its bolted/ground joint enclosure simplifies field mounting, reduces wiring interruptions, and fits typical industrial panels used in hazardous locations.
The unit is rated 15 A and operates at 120/240 VAC, with a through-feed design and copper-free aluminum enclosure. These specs deliver reliable control-circuit protection in demanding environments while meeting NEC/CEC requirements and providing robust mechanical protection and corrosion resistance.
Best suited for process automation, chemical processing, and manufacturer facilities with hazardous locations. Its single-pole, 3/4" trade size and through-feed enclosure support compact, reliable protection for small control circuits in machinery, conveyors, and packaging systems operating in Class I/II/III environments.
It carries NEC/CEC standards compliance and is rated for Hazardous/Classified Locations, including Class I, Division 1 & 2, Class II, Division 2, and Class II, Division 1. NEMA ratings 3, 7, 9, 12 further verify enclosure ruggedness and environmental protection.
By combining a durable copper-free aluminum enclosure with a robust bolted/ground joint, it reduces corrosion-related failures and maintenance, shortens downtime during replacements, and improves panel reliability—leading to lower lifecycle costs in hazardous-area operations.