Eaton FLB115 WT50 3 Circuit Breaker - Thermal Magnetic FDB
Part Number: FLB115 WT50 3
Quick Summary
Eaton FLB115 WT50 3 circuit breaker protects electrical systems in hazardous locations, providing reliable overcurrent protection for 3-pole panels. Engineers often face downtime and compatibility challenges when replacements don’t fit existing frames or meet code requirements. This unit delivers NEC/CEC compliance and hazardous-location ratings, including Class I, Division 1 and 2; Class II, Division 1 and 2; and Class III, with a robust NEMA footprint of 3, 4, 7, 9. With a 50 A, 600 Vac thermal-magnetic trip, threaded cover, copper-free aluminum housing, and a 1-1/4" trade size, it integrates smoothly with existing Eaton low-voltage systems while helping reduce life-cycle costs. For procurement teams, this combination of reliability, standardization, and documented installation guidance accelerates buy-and-install cycles.
Product Information
Extended Description
FLB115 WT50 3 Eaton: Eaton Crouse-Hinds series FLB circuit breaker, 50A, FDB frame type, Thermal magnetic, Threaded cover construction, Copper-free aluminum, Cutler-Hammer breaker, Three-pole, Non-interchangeable trip, 1-1/4", 600 Vac
Product Name
Eaton Crouse-Hinds series FLB circuit breaker
Catalog Number
FLB115 WT50 3
UPC
782274018669
Product Length/Depth
8.5 in
Product Height
13.38 in
Product Width
9.13 in
Product Weight
44.45 lb
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 4 7 9
Enclosure
With circuit breaker
Amperage Rating
50 A
Circuit breaker type
Thermal magnetic
Voltage rating
600 Vac
Number of poles
Three-pole
Trade size
1-1/4"
Manufacturer
Cutler-Hammer
Circuit breaker frame type
FDB
Enclosure cover construction
Threaded
Enclosure material
Copper-free aluminum
Special features
Non-interchangeable trip
FLB Series Explosionproof Circuit Breakers catalog page
FLB Explosionproof Circuit Breakers UL certification
FLB Explosionproof Circuit Breakers UL certification
IF 1016 - FLB Series Circuit Breakers
Eaton Specification Sheet - FLB115 WT50 3
Feature: Thermal-magnetic trip provides fast overload protection with predictable operation. Benefit: Reduces equipment damage and downtime, improving overall line reliability in demanding environments. Application: Ideal for 50 A, 600 Vac circuits feeding motors and control panels in hazardous locations. Feature: Three-pole design and 1-1/4" trade size enable compact, synchronized protection across three-phase systems. Benefit: Streamlined panel assembly and easier field upgrades with consistent trip characteristics. Application: Suitable for multi-leg feeders in process and chemical plants.Feature: FDB frame type with threaded cover supports rugged field installation and secure enclosure sealing. Benefit: Lower maintenance needs and safer, vibration-resistant installations. Application: Enclosures exposed to dust, moisture, or explosive atmospheres in industrial facilities.Feature: Copper-free aluminum enclosure material reduces weight and corrosion susceptibility. Benefit: Easier handling during installation and longer service life in harsh environments. Application: Offshore, mining, or chemical processing facilities where material compatibility matters.Feature: Non-interchangeable trip and NEC/CEC compliance provide consistent protection and regulatory alignment. Benefit: Simplified maintenance planning and reduced risk of mis-matched components. Application: Refined procurement for code-compliant hazardous-location projects.Feature: Certifications and ratings including Class I/II Hazardous Locations and NEMA 3, 4, 7, 9 support safe deployments. Benefit: Peace of mind for inspectors and proof of compliance during audits. Application: Highly regulated industrial spaces and plant-wide safety programs.
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FAQs
Install the FLB115 WT50 3 with a compliant enclosure that supports a 1-1/4 in trade size and threaded cover. Verify Class I, II, and III location ratings per NEC/CEC, and follow Eaton installation instructions (IF 1016) for proper mounting, wiring, and torque. Use copper-free aluminum components to minimize corrosion risk and ensure all connections are tight to prevent arcing in explosive atmospheres.
The device is a three-pole circuit breaker rated for 50 A and 600 Vac. It uses a thermal-magnetic trip mechanism and belongs to the FDB frame family. Enclosure is copper-free aluminum with threaded cover, designed for 1-1/4 inch trade size. This configuration supports three-phase protection in hazardous locations per NEC/CEC and NEMA ratings 3, 4, 7, 9.
Yes. The FLB115 WT50 3 is specified for Hazardous/Classified Locations with NEC hazardous ratings including Class I Division 1 and 2. It also covers Class II and Class III as noted in its certifications. When installed in appropriate enclosures and properly grounded, it provides compliant protection for equipment in demanding hazardous-location applications.
It meets NEC/CEC standards and carries hazard-location classifications for Class I, II, and III. It also aligns with NEMA ratings 3, 4, 7, 9. Certification documentation includes UL-related listings and installation sheets, ensuring regulatory compliance and audit readiness for industrial facilities deploying explosion-proof protection.
The FLB115 WT50 3 reduces downtime through reliable thermal-magnetic protection and non-interchangeable trip, minimizing mis-match risks during replacements. Copper-free aluminum construction lowers weight and corrosion-related maintenance. In regulated environments, NEC/CEC compliance and documented installation guidance streamline procurement, commissioning, and maintenance planning, delivering predictable operating costs and faster asset deployment.