Eaton DSD SR30220 SX178 Selector Switch - Class I, Div 1

Part Number: DSD SR30220 SX178
Eaton Crouse-Hinds logo
Manufacturer
Eaton Crouse-Hinds
Part number
DSD SR30220 SX178

Quick Summary

The DSD-SR selector switch provides reliable On/Off control for hazardous-location equipment in process and power distribution settings. Operators struggle with safe-lockout and two-position control in explosive atmospheres, risking downtime and safety incidents. This unit is certified for NEC Class I, Division 1 hazardous locations and carries rugged NEMA ratings 3, 5, and 12, with area-classified approvals for hazardous or classified locations (Canada through UL listings). Designed for 600 VAC operation and 30 A loads, it integrates with EDS/EFS back boxes to simplify installation, improve safety, and reduce maintenance costs across industrial facilities.

Product Information

Extended Description

DSD SR30220 SX178 Eaton Crouse-Hinds: Eaton Crouse-Hinds series DSD-SR selector switch, 30A, Two-pole, 2, Lockout for two position switch, handle in either position, On/Off, 600 Vac, EDS/EFS back boxes
Product Name
Eaton Crouse-Hinds series DSD-SR selector switch
Catalog Number
DSD SR30220 SX178
Product Length/Depth
2.38 in
Product Height
5.875 in
Product Width
3.5 in
Product Weight
1 lb
UPC
662276845725
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class II, Division 1 Class III
NEMA Rating
3 5 12
Amperage Rating
30A
Voltage rating
600 Vac
Switch function
On/Off
Number Of Poles
Two-pole
Number Of Positions
2
Special features
Lockout for two position switch, handle in either position
Used with
EDS/EFS back boxes
Two-pole, two-position design with lockout for two-position operation provides fail-safe control and enhanced worker safety, supporting compliant lockout-tagout practices and reducing accidental startups in hazardous environments. Business impact: safer commissioning and maintenance, lower incident-driven downtime, easier regulatory alignment for oil & gas, chemical processing, and mining applications. Application: process lines and motor control circuits requiring reliable On/Off control in classified locations. The 30 A, 600 Vac rating handles standard industrial loads without oversizing, delivering consistent performance for conveyors, pumps, and control panels. Business impact: reduced wiring complexity, lower total cost of ownership, and improved energy management in cross-functional facilities. Application: heavy-duty equipment and control system upgrades where space and safety are priorities. EDS/EFS back box compatibility enables quick panel integration and robust protection, minimizing field modification time. Business impact: faster installations and lower field labor costs with proven Eaton back boxes. Application: explosion-proof enclosures in hazardous locations. Certifications including NEC Class I Division 1, area classifications, and NEMA 3, 5, 12 provide regulatory confidence and durable enclosure protection. Business impact: regulatory risk reduction and durable performance in harsh environments. Application: chemical plants, refineries, and mining operations seeking long-term reliability. Dimensional footprint of 2.38 in depth, 5.875 in height, 3.5 in width, and 1 lb weight supports compact panel layouts, enabling retrofit projects and new builds with restricted space. Business impact: easier replacements and scalable panel design for expansion projects. Application: retrofit installations in existing control panels and new installations with tight mounting constraints.

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FAQs

The DSD SR30220 SX178 is designed to be used with Eaton EDS/EFS back boxes, enabling straightforward mounting, secure wiring, and a compact, explosion-protected control solution. This compatibility reduces field modification time and improves panel protection in hazardous locations.
It carries NEC Class I, Division 1 hazardous location ratings, area-classified approvals, and NEMA ratings 3, 5, 12. Canadian certifications are referenced in the product literature and UL listings, supporting compliance across multi-region installations.
Yes. The DSD SR30220 SX178 is rated for 600 VAC operation at 30 A, making it suitable for heavy-duty control circuits, motors, and process equipment in hazardous environments when installed with appropriate back boxes.
The selector switch measures 2.38 inches deep, 5.875 inches high, and 3.5 inches wide, with a weight of approximately 1 pound, aiding in panel footprint planning and retrofit sizing.
Install with EDS/EFS back boxes in an enclosure suitable for Hazardous/Classified Locations, ensuring NEC Class I Division 1 compliance. Use the lockout feature for two-position operation to support LOTO procedures and minimize unintentional starts during maintenance.