Eaton Crouse-Hinds DSD SR30321 Selector Switch - Hazardous/Classified Locations
Part Number: DSD SR30321
Manufacturer
Eaton Crouse-Hinds
Part number
DSD SR30321
Quick Summary
DSD SR30321 selector switch from Eaton Crouse-Hinds provides reliable 3-pole control for hazardous locations in industrial automation. This device helps eliminate guesswork in safety-critical circuits by delivering proven explosion-protected switching at up to 30 A and 600 Vac. Operators often face downtime and compliance headaches when equipment is not rated for adverse environments; this selector switch is designed for Class I, II, and III locations with NEC/CEC alignment, and supports the EDS/EFS back boxes for fast, code-compliant installations. The combination of hazardous location ratings, sturdy construction, and standard back-box compatibility translates into lower maintenance costs and faster throughput. In practice, it supports robust control schemes in process industries while integrating with Eaton’s DSD-SR family for scalable automation.
Product Information
Extended Description
DSD SR30321 Eaton Crouse-Hinds: Eaton Crouse-Hinds series DSD-SR selector switch, 30A, Three-pole, 2, Double-throw without off, 600 Vac, EDS/EFS back boxes
Product Name
Eaton Crouse-Hinds series DSD-SR selector switch
Catalog Number
DSD SR30321
Product Length/Depth
2.38 in
Product Height
5.875 in
Product Width
3.5 in
Product Weight
1.65 lb
UPC
662276849280
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class II, Division 1 Class I, Division 1 Class III
NEMA Rating
3 12 5
Amperage Rating
30A
Voltage rating
600 Vac
Switch function
Double-throw without off
Number Of Poles
Three-pole
Number Of Positions
2
Used with
EDS/EFS back boxes
DSD-SR Series Explosionproof HP Rated Selector Switch Sub-assembly catalog page
DSD-SR Explosionproof HP Rated Selector Switch Sub-assembly Canadian certification
DSD-SR Explosionproof HP Rated Selector Switch Sub-assembly Canadian certification
Eaton Specification Sheet - DSD SR30321
Feature: 30 A at 600 Vac ratings provide high-current capability for demanding loads. Business Impact: Enables safe control of motors and actuators in hazardous environments without oversizing components, reducing capital spend and energy waste. Application: Suitable for process automation panels in chemical plants and oil & gas facilities. Feature: Three-pole, two-position, double-throw without off configuration. Business Impact: Delivers clear, defined switching states with no neutral or off position, improving operator clarity and reducing misoperation risk. Application: Critical start/stop or selection tasks in hazardous locations where a definitive state is required. Feature: Compatibility with EDS/EFS back boxes. Business Impact: Simplifies installation and wiring, shortening panel build times and lowering field commissioning costs. Application: Fast integration into existing explosion-proof enclosures and control cabinets. Feature: Hazardous location certifications and NEC/CEC compliance. Business Impact: Supports regulatory adherence, reduces inspection-related downtime, and sustains safe operation in Class I, II, III environments. Application: Compliance-driven projects in refineries, chemical plants, and offshore facilities. Feature: NEMA ratings 3, 12, 5 offering versatile enclosure compatibility. Business Impact: Enhances protection against environmental factors and supports flexibility in enclosure selection. Application: Industrial automation panels requiring durable enclosures in challenging conditions. Industry Insight: Leveraging the DSD-SR series provides a scalable path for expanding hazardous-location control, ensuring consistent maintenance intervals and a unified safety strategy across multiple skids and lines.
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FAQs
The DSD SR30321 is designed to mount in Eaton EDS/EFS back boxes, enabling straightforward panel integration. It supports standard explosion-proof enclosure interfaces, simplifying wiring and reducing field labor. Verify enclosure rating and mounting hole pattern per the catalog page to ensure a secure fit and compliant installation in hazardous locations.
The switch is rated for 30 A at 600 Vac, is three-pole, and offers two positions with a double-throw without an off position. This configuration provides clearly defined states for start/stop or on/off control, reducing ambiguity in control circuits and improving reliability in demanding environments.
Yes. The unit carries NEC/CEC compliance with hazardous location ratings, supporting Class I, II, and III classifications. It is designed for use in hazardous/classified locations and aligns with area classifications specified for such environments, aiding safe operation and regulatory compliance.
Key certifications include NEC/CEC compliance and hazardous-location ratings (Class I, II, III; Division 1). It also supports NEMA ratings 3, 12, and 5, and is specified for use with EDS/EFS back boxes, offering robust protection and broad enclosure compatibility for industrial control panels.
The explosion-proof design and hazardous-location suitability reduce maintenance interruptions and inspection risks in harsh environments. The compatibility with standard back boxes and durable construction help lower commissioning time and facilitate scalable automation, contributing to a lower total cost of ownership over the life of the installation.