Eaton EDS3129 SA Snap Switch Control Station - Hazardous

Part Number: EDS3129 SA
Eaton Crouse-Hinds logo
Manufacturer
Eaton Crouse-Hinds
Part number
EDS3129 SA
Category

Quick Summary

EDS3129 SA snap switch control station is a rugged, field-ready solution for remote motor control in hazardous environments. It addresses the challenge of maintaining safe, reliable operations in spaces where access is limited and downtime is costly. The unit meets NEC/CEC standards and supports hazardous area ratings, including Class I, Division 1 and 2, Class II, Division 1 and 2, and Class III, with NEMA ratings 3, 7, and 9. Designed for single-gang installation, it features a 1" hub and a copper-free aluminum enclosure, rated for 120–277V at 20A. This combination delivers durable performance, reduced maintenance, and streamlined compliance—key business value for industrial automation projects, process controls, and safety-critical systems.

Product Information

Extended Description

EDS3129 SA Eaton Crouse-Hinds: Eaton Crouse-Hinds series EDS snap switch control station, 20A, With switch, With one 1" hub, Copper-free aluminum, 1, Single-gang, Single-pole, 1, 120-277V, Dead end, Single-pole, 1", 120-277 Vac
Product Name
Eaton Crouse-Hinds series EDS snap switch control station
Catalog Number
EDS3129 SA
Product Length/Depth
5.06 in
Product Height
5.875 in
Product Width
3.5 in
Product Weight
7.9 lb
UPC
782274533636
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
Enclosure type
With switch
Trade size
1"
Number Of Poles
Single-pole
Switch function
Single-pole
Number of gangs
Single-gang
Style
Dead end
Voltage rating
120-277 Vac
Amperage Rating
20A
Hub style
With one 1" hub
Number of devices
1
Number of pushbuttons
1
Primary voltage range
120-277V
Material
Copper-free aluminum
EDS and EDSX Fully Assembled Snap Switches catalog page EDS and EFD Explosionproof Snap Switches Canadian certification - industrial control panels and assemblies EDS and EFD Explosionproof Snap Switches Canadian certification - industrial control panels and assemblies EDS and EFD Explosionproof Snap Switches Canadian certification - industrial control panels and assemblies EDS and EFD Explosionproof Snap Switches Canadian certification - industrial control panels and assemblies IF 328 - EDS, EFS, EDSC and EFSC Single- and Two-gang Device Bodies IF 328 - EDS, EFS, EDSC and EFSC Single- and Two-gang Device Bodies Eaton Specification Sheet - EDS3129 SA
Feature → Business Impact → Application: Copper-free aluminum enclosure provides excellent corrosion resistance in humid or chemically exposed environments, reducing maintenance costs and extending service life across oil and gas, chemical processing, and wastewater facilities. This translates to lower total cost of ownership and fewer unscheduled outages in critical control panels. Application: harsh industrial settings where enclosure longevity matters. Feature → Business Impact → Application: One 1" hub enables cleaner wiring, faster terminations, and simplified conduit management, shortening installation times for retrofit projects and new builds alike. Application: machine rooms and field installations with limited access. Feature → Business Impact → Application: 20A at 120–277V covers most control circuits without extra transformers, enabling compact power distribution and simpler panel layouts. Application: general-purpose motor control and locally mounted pushbutton stations. Feature → Business Impact → Application: Single-pole, single-gang design with a dead-end style enhances safety during maintenance and makes device replacement straightforward. Application: compact control stations in space-constrained panels. Feature → Business Impact → Application: NEC/CEC certification and NEMA ratings (3, 7, 9) ensure compliance in hazardous/classified locations, reducing risk during audits and field inspections. Application: process and safety-critical installations. Feature → Business Impact → Application: Compatibility with Eaton installation literature (IF328, IF242) and catalog pages streamlines procurement and standardizes field assemblies. Application: design engineering and maintenance teams seeking proven documentation. Feature → Business Impact → Application: Copper-free aluminum and robust rating align with industry best practices, supporting uptime, energy efficiency, and reliability in demanding environments. Application: industrial automation, packaging, and material handling lines.

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FAQs

For a compliant installation, mount the EDS3129 SA in a single-gang enclosure with the 1" hub oriented for convenient conduit entry. Ensure cable entries and wiring clearances meet local code, and use copper-free aluminum to minimize corrosion. The unit’s dead-end design supports straightforward wiring Terminations should follow the IF328 and IF242 installation sheets for consistent field assemblies.
The EDS3129 SA is certified for NEC/CEC compliance and is rated for Hazardous/Classified Locations. It supports Class I, Division 1 and 2, Class II, Division 1 and 2, and Class III environments, with NEMA ratings 3, 7, and 9. These ratings help ensure safe operation in demanding industrial settings such as oil, gas, chemical processing, and mining applications.
Yes. The EDS3129 SA is designed for 120-277V operation and includes a single 1" hub to simplify routing and termination of field wiring. Its compact single-gang, single-pole footprint reduces panel space requirements and supports efficient wiring in tight control cabinets or armored cable runs.
Refer to Eaton’s IF328 and IF242 instruction sheets for single- and two-gang device bodies and installation guidance, as well as the EDS catalog pages for fully assembled snap switches. These documents provide mounting dimensions, wiring diagrams, and safety considerations to ensure a compliant, repeatable installation in hazardous locations.
The EDS3129 SA delivers durable, corrosion-resistant copper-free aluminum construction, verified hazardous location ratings, and simplified wiring through a 1" hub. These features translate to reduced maintenance, faster installation, lower risk of non-compliance penalties, and improved uptime—key drivers of lower lifecycle cost and higher equipment availability in mission-critical automation systems.