Eaton EMPS079 Selector Switch - NEC/CEC Hazardous Ratings
Part Number: EMPS079
Quick Summary
EMPS079 selector switch operator provides reliable control in hazardous-location panels for process and machine automation. Designers often face compact, code-compliant devices that survive harsh environments and minimize wiring complexity. This EMPS079 delivers NEC/CEC hazardous ratings with Class I, Division 1 & 2; Class II, Division 1 & 2; Class III, and NEMA 3/7/9 enclosures, while maintaining a small footprint. By pairing a short assembly with two contact blocks, it supports scalable panel designs and easier maintenance across global facilities. The result is safer, faster installations that reduce downtime and installation costs while aligning with ATEX/IEC guidance for international projects and broad compatibility with EMPS barrel assemblies.
Product Information
Extended Description
EMPS079 Eaton Crouse-Hinds: Eaton Crouse-Hinds series EMPS selector switch operator, Short, Three-position selector switch, Two contact blocks
Product Name
Eaton Crouse-Hinds series EMPS selector switch operator
Catalog Number
EMPS079
Product Length/Depth
4.81 in
Product Height
2.63 in
Product Width
2.63 in
Product Weight
0.75 lb
UPC
782274310466
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
Operator style
Three-position selector switch
Assembly style
Short
Special features
Two contact blocks
EMP and EMPS Hazardous Area Operators catalog page
IF 1702 - EMP/EMPS Barrel Assemblies - ATEX and IEC version
IF 1702 - EMP/EMPS Barrel Assemblies - ATEX and IEC version
Eaton Specification Sheet - EMPS079
Feature → Business Impact → Application: The EMPS079 uses a short 4.81 in length, 2.63 in width and height footprint with a three-position selector switch and two contact blocks. This compact form reduces panel real estate, lowers installation time, and simplifies wiring in control cabinets for hazardous-area applications such as process automation and remote monitoring. Feature → Business Impact → Application: NEC/CEC compliance with hazardous ratings Class I Div 1 & 2, Class II Div 1 & 2, and Class III provides regulatory alignment and reduces risk during audits. This enables safer machine control in oil, gas, chemical, and mining environments across North America and beyond. Feature → Business Impact → Application: Two contact blocks offer expanded circuit options without increasing panel size, enabling multi-circuit control in a single operator. This supports streamlined logic in hazardous-location control panels and reduces interconnects for standalone machines. Feature → Business Impact → Application: Short barrel-assembly style and included installation documents (IF1702 ATEX/IEC) improve field installability and retrofit capability, speeding deployment in retrofits and new builds. Feature → Business Impact → Application: NEMA ratings 3, 7, 9 deliver rugged enclosure protection for outdoors and demanding environments, delivering improved reliability, lower maintenance costs, and longer equipment life in harsh industrial settings.
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FAQs
EMPS079 installations follow the EMPS/EMP barrel assemblies guidance. Refer to IF 1702 instructional sheets for ATEX and IEC versions (two available: IF1702 and IF872). Ensure the short assembly fits the panel, torque connections per wiring diagrams, and verify enclosure integrity and ground continuity. Use proper hazardous-area wiring practices and document compliance per NEC/CEC standards.
EMPS079 is a three-position selector switch with two contact blocks, designed for hazardous locations. It carries NEC/CEC compliance with Class I, Division 1 & 2; Class II, Division 1 & 2; Class III ratings and a NEMA 3/7/9 enclosure footprint. The device supports up to dual circuits in a compact form factor, reducing panel size while maintaining rugged protection in harsh environments.
Yes. EMPS079 meets NEC/CEC hazardous ratings across Class I Division 1 and 2, Class II Division 1 and 2, and Class III. This makes it suitable for a wide range of hazardous-area applications (oil, gas, chemical, mining) while preserving safe operation and compliance documentation for installations in diverse geographies.
EMPS079 has a compact footprint with a product length/depth of 4.81 inches, height of 2.63 inches, and width of 2.63 inches. The unit weighs 0.75 pounds, making it easy to integrate into tight control panels without adding significant load or space penalties.
You can download the Eaton specification sheet for EMPS079 from Eaton’s site: EMP S079 datasheet page. The document provides electrical ratings, mounting guidelines, mounting clearances, and wiring diagrams to support correct selection and installation in hazardous locations.