Eaton FSQC3390 Interlocked Receptacle with Switch - Explosionproof
Part Number: FSQC3390
Quick Summary
Interlocked Receptacle with switch FSQC3390 delivers safe, controlled power to magnetic motor starters in hazardous environments. For engineers facing miswired starts or accidental energization in hazardous zones, this unit provides reliable interlock and robust uptime. It meets Hazardous/Classified Locations area classifications, NEC/CEC standards, and NEMA ratings 7, 3, 12, and 9 to support compliance and safe operation. By combining copper-free aluminum housing, brass contacts, and a spring door, FSQC3390 delivers durable performance with easy maintenance and long-term cost savings in control panels and motor control centers. This Eaton Crouse-Hinds Arktite solution is ideal for installations requiring explosionproof interlocked receptacles with switched control.
Product Information
Extended Description
FSQC3390 Eaton Crouse-Hinds: Eaton Crouse-Hinds series Arktite FSQC interlocked receptacle with switch, Through feed, 0.55-0.70" cable diameter, Three-wire, four-pole, Brass contacts, Copper-free aluminum, Spring door, 1", For use with magnetic motor starters
Product Name
Eaton Crouse-Hinds series Arktite FSQC interlocked receptacle with switch
Catalog Number
FSQC3390
Product Weight
10.31 lb
UPC
782274417349
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 III Class I, Zone 1 Class II, Division 2
NEMA Rating
7 3 12 9
Trade size
1"
Configuration
Three-wire, four-pole
Receptacle style
Spring door
Back box style
Through feed
Cable diameter
0.55-0.70 in
Material
Copper-free aluminum
Contact material
Brass
Type
For use with magnetic motor starters
SP3D Design Package - Arktite FSQC Explosionproof Interlocked Receptacles
Arktite FSQC Explosionproof Interlock Receptacles catalog page
Arktite FSQC Explosionproof Interlock Receptacles Canadian certification
Arktite FSQC Explosionproof Interlock Receptacles Canadian certification
IF 926 - FSQ Interlocked Receptacle and Switch
IF 926 - FSQ Interlocked Receptacle and Switch
IF 926 - FSQ Interlocked Receptacle and Switch
IF 926 - FSQ Interlocked Receptacle and Switch
Eaton Specification Sheet - FSQC3390
Feature: Interlocked receptacle with switch. Benefit: Prevents accidental energization of motors and equipment, reducing start-up errors and improving personnel safety in hazardous locations. Application: Ideal for control panels and motor control centers in chemical plants or offshore facilities where strict interlock logic is required. Feature: Through-feed back box and 1" trade size. Benefit: Simplifies wiring during retrofit or new installs with minimal cabinet intrusion and faster field integration. Application: Common in retrofit projects or new builds where space is constrained yet reliable isolation is needed. Feature: Cable diameter range 0.55-0.70 in; three-wire, four-pole; brass contacts. Benefit: Ensures robust, low-resistance electrical connections with corrosion resistance and long life under demanding loads. Application: Magnetic motor starters and heavy-duty control circuits in hazardous environments. Feature: Copper-free aluminum housing; spring door; NEMA ratings 7, 3, 12, 9. Benefit: Durable housing resists corrosion and vibration while providing weather and dust resistance, aligning with industry standards. Application: Outdoor, process, and chemical processing installations. Feature: For use with magnetic motor starters. Benefit: Streamlines integration with common drive systems, reducing panel complexity and improving overall system responsiveness. Application: OEMs and maintenance teams deploying standard motor control solutions in hazardous locations.
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FAQs
FSQC3390 is built for hazardous locations, featuring a through-feed back box and a 1" trade size to simplify wiring. When installing, follow the included instruction sheets, ensure correct interlock wiring for three-wire, four-pole configurations, and verify flexibility with magnetic motor starters. Use proper sealants and gaskets to maintain NEMA rating integrity and maintain records for compliance audits.
Key specs include a 1" trade size, 0.55-0.70 in cable diameter, three-wire, four-pole configuration, copper-free aluminum housing, brass contacts, and a spring door. It carries hazardous/classified location area classification, NEC/CEC standards, and NEMA ratings 7, 3, 12, 9, making it suitable for explosionproof motor control in challenging environments.
Applications include control panels and motor control centers in chemical plants, offshore facilities, and other hazardous locations where safe, interlocked actuation is essential. Its compatibility with magnetic motor starters and robust materials reduce misstarts, improve safety, and support regulatory compliance in demanding industries.
FSQC3390 carries area classification for Hazardous/Classified Locations, NEC/CEC standards, and NEMA ratings including 7, 3, 12, and 9. Canadian certification references are available via UL and related documentation. This combination ensures regulatory compliance, safer operation, and easier procurement for regulated facilities.
The copper-free aluminum housing and brass contacts offer long-life durability with reduced corrosion and maintenance needs. The spring door design simplifies inspections, while compatibility with standard magnetic motor starters minimizes spare parts inventory. Overall, expect lower downtime, improved reliability, and safer motor control in hazardous locations, supporting a favorable total cost of ownership.