Eaton FSQC3430 S4 Interlocked Receptacle - Hazardous Locations
Part Number: FSQC3430 S4
Quick Summary
FSQC3430 S4 interlocked receptacle with switch provides safe, explosionproof power distribution in hazardous locations. Through-feed, three-wire configuration delivers a secure, single-access point for critical equipment without compromising worker safety. In demanding environments, operators need reliable interlocks that resist dust, moisture, and chemical exposure while meeting code requirements. The FSQC3430 S4 meets NEC/CEC and UL certification for Class I, Division 1/2; Class II, Division 1/2; and Class III, with Hazardous/Classified Location area classifications. For buyers, the Arktite FSQC family uses copper-free aluminum housings, brass contacts, a spring door, and 1" trade-size compatibility, enabling fast installation and rugged service. This combination reduces downtime, enhances safety, and simplifies regulatory compliance across global sites.
Product Information
Extended Description
FSQC3430 S4 Eaton Crouse-Hinds: Eaton Crouse-Hinds series Arktite FSQC interlocked receptacle with switch, 30A, Through feed, Three-wire, four-pole, Brass contacts, Copper-free aluminum, Spring door, Special polarity, 1", Three-pole switch, 120-600 Vac
Product Name
Eaton Crouse-Hinds series Arktite FSQC interlocked receptacle with switch
Catalog Number
FSQC3430 S4
Product Length/Depth
4.75 in
Product Height
10 in
Product Width
5.75 in
Product Weight
5.2 lb
UPC
782274934969
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class II, Division 2 Class I, Zone 1 Class I, Division 1 Class I, Division 2 Class II, Division 1 Class III
NEMA Rating
9 3 7 12
Amperage Rating
30A
Trade size
1"
Configuration
Three-wire, four-pole
Receptacle style
Spring door
Back box style
Through feed
Voltage rating
120-600 Vac
Material
Copper-free aluminum
Contact material
Brass
Special features
Special polarity
Type
Three-pole switch
SP3D Design Package - Arktite FSQC Explosionproof Interlocked Receptacles
Arktite FSQC Explosionproof Interlock Receptacles catalog page
Arktite FSQC Explosionproof Interlock Receptacles UL certification
Arktite FSQC Explosionproof Interlock Receptacles UL certification
IF 83 - FSQ Interlocked Receptacle and Switch - Class I, Group B Hazardous (Classified) Locations
IF 83 - FSQ Interlocked Receptacle and Switch - Class I, Group B Hazardous (Classified) Locations
IF 83 - FSQ Interlocked Receptacle and Switch - Class I, Group B Hazardous (Classified) Locations
IF 83 - FSQ Interlocked Receptacle and Switch - Class I, Group B Hazardous (Classified) Locations
IF 83 - FSQ Interlocked Receptacle and Switch - Class I, Group B Hazardous (Classified) Locations
Interlocked switching is a core safety feature that minimizes arc flash and equipment damage. The FSQC3430 S4 interlock prevents the receptacle from opening while a circuit is energized, ensuring safe maintenance and reducing unplanned downtime. In industrial automation settings, this translates to lower risk during tool changes and in hazardous-location panels, where controlled access is essential. Through-feed back box design simplifies installation in heavy-duty enclosures. With a 1" Trade size and a through-feed configuration, technicians can route power and control wiring in a single, secure path, cutting wiring time and reducing field errors. The design supports rapid retrofit in legacy equipment and aligns with common field configurations in hazardous-area installations. Copper-free aluminum housing paired with brass contacts delivers corrosion resistance and robust current handling. The lighter material reduces overall equipment weight and simplifies handling during installation in confined spaces. Brass contacts maintain durable conductivity across 30A at 120-600 VAC, supporting reliable long-term performance in harsh environments. Durable sealing and a spring-door receptacle style provide dust and contaminant resistance in dusty or industrial environments. The spring door helps maintain enclosure integrity when not in use, reducing maintenance calls. The 1" trade size and 120-600 VAC rating broaden compatibility with existing power distributions and control circuits in sites ranging from oil and gas to chemical processing. Compliance-ready and field-proven, FSQC3430 S4 aligns with NEC/CEC standards and UL certifications for hazardous locations, giving procurement teams confidence during audits. The rugged construction supports preventive maintenance regimes and reduces replacement costs by extending service life in explosion-proof installations. End users gain predictable performance, safer operations, and faster mean time between outages.
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FAQs
FSQC3430 S4 is designed for 1 inch trade size back boxes and through-feed installations. Its through-feed back box style simplifies wiring by providing a single, secure conduit path for both power and control circuits. This minimizes field rework and reduces the chance of miswiring, which is especially valuable in hazardous-location panels where reliability is critical.
The FSQC3430 S4 carries NEC/CEC compliance and UL certification for hazardous locations, including Class I, Division 1 and Division 2, Class II, Division 1 and Division 2, and Class III. Area classifications reflect Hazardous/Classified Locations, ensuring regulatory alignment across global sites and simplifying audit readiness.
Typical applications include control panels in chemical processing, oil and gas facilities, mining operations, and other environments requiring explosionproof interlocks. The unit’s 120-600 VAC rating and 30A capacity support heavy machinery and equipment, while the interlock enhances safety during maintenance and interlock-based shutdown sequences.
The interlock prevents panel doors from being opened under load, reducing arc flash risk and accidental energization during maintenance. This creates safer work conditions, minimizes unplanned outages, and shortens shutdown times. In regulated settings, this also supports compliant maintenance procedures and more predictable service intervals.
Plan for regular inspection of brass contacts and the spring door mechanism, and verify that the copper-free aluminum housing remains free from corrosion or pitting. Ensure correct torque during mounting, confirm 1" trade-size compatibility, and follow the installation sheets for through-feed wiring. Routine cleaning and inspection help maintain reliable conductivity and interlock performance.