Eaton DSD SR30221 selector switch - Hazardous Locations
Part Number: DSD SR30221
Manufacturer
Eaton Crouse-Hinds
Part number
DSD SR30221
Quick Summary
DSD SR30221 is a hazardous-location selector switch designed for explosion-proof control panels in harsh environments. It provides 30A at 600 Vac with two-pole, two-position operation and a double-throw without off, compatible with EDS/EFS back boxes. This configuration suits heavy-load control in chemical plants, oil and gas facilities, and mining operations. It carries NEC/CEC compliance and hazardous ratings for Class I, Division 1; Class II, Division 1; Class III, plus NEMA 3, 5, 12 protection, delivering rugged reliability. Operators benefit from safer, maintenance-friendly wiring, reduced downtime, and a straightforward sourcing path for hazardous-location controls, ultimately improving uptime and project ROI in critical process applications.
Product Information
Extended Description
DSD SR30221 Eaton Crouse-Hinds: Eaton Crouse-Hinds series DSD-SR selector switch, 30A, Two-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 SR30221
Product Length/Depth
2.38 in
Product Height
5.875 in
Product Width
3.5 in
Product Weight
1 lb
UPC
662276358614
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
Double-throw without off
Number Of Poles
Two-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 SR30221
Feature: 30A at 600 Vac rating enables handling of high-power loads without overloading the switch. Business Impact: Supports reliable motor and equipment control while reducing the number of components required in hazardous environments. Application: Feed and control circuits in chemical plants and oil refineries. Feature: Two-pole, two-position, double-throw without off reduces operator error and simplifies control logic. Business Impact: Minimizes misoperation risk and streamlines sequencing in critical processes. Application: Start/stop control for hazardous-area equipment. Feature: NEC/CEC compliance with Class I, Division 1; Class II, Division 1; Class III and NEMA 3, 5, 12 ratings. Business Impact: Regulatory alignment and durable enclosure protection reduce compliance risk and maintenance costs. Application: Global hazardous-location installations. Feature: EDS/EFS back box compatibility simplifies installation. Business Impact: Faster panel assembly, fewer field adapters, and easier wiring inspections. Application: Hazardous-location control panels. Feature: Compact dimensions (2.38 in depth, 5.875 in height, 3.5 in width) and 1 lb weight. Business Impact: Predictable footprint supports efficient panel layout and reduces enclosure real estate needs. Application: Panel design and retrofits in space-constrained environments.
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FAQs
The DSD SR30221 is designed for Eaton Crouse-Hinds EDS and EFS back boxes, ensuring a secure fit in hazardous-location installations. When wiring, follow the back-box mounting guidelines to achieve proper enclosure integrity. The combined sub-assembly supports quick installation, reduces field wiring issues, and simplifies inspection during regulatory audits.
DSD SR30221 is rated at 30A, 600 Vac, with two-pole, two-position operation and a double-throw without off. It meets NEC/CEC requirements and carries Class I, Division 1; Class II, Division 1; Class III hazardous ratings, plus NEMA 3, 5, 12 enclosure protection. These specs support safe operation in hazardous locations and align with industrial control standards.
Yes. The DSD SR30221 is designed for explosion-proof operation in Hazardous/Classified Locations, meeting Class I Division 1, Class II Division 1, and Class III requirements. Its construction and NEMA ratings provide protection against dust, fluids, and corrosion, making it suitable for oil, gas, chemical, and mining facilities where reliable control is essential.
The DSD SR30221 offers rugged reliability with a simpler wiring scheme and fewer components, reducing maintenance frequency and downtime. Its compatibility with standard back boxes and standard NEC/CEC compliance streamline procurement and stocking, translating to lower total cost of ownership and faster project realization in hazardous-location control systems.
Install the DSD SR30221 with EDS/EFS back boxes per the manufacturer guidelines, ensuring correct enclosure clearance and secure mounting. Verify electrical ratings match the connected load (30A at 600 Vac) and observe proper wiring color codes and torque specs. This approach minimizes rework and supports compliant, efficient panel integration in harsh environments.