Eaton FLB140 WT50 2 Circuit Breaker - Explosionproof

Part Number: FLB140 WT50 2
Manufacturer
Eaton
Part number
FLB140 WT50 2

Quick Summary

Eaton FLB140 WT50 2 circuit breaker is a rugged protection device designed for hazardous-location control panels and industrial equipment. This design aims to mitigate costly downtime and unplanned trips in harsh environments where safety certifications matter most. It carries NEC/CEC compliance, and is rated for Hazardous/Classified Locations with Class I, Division 1 and related NEMA ratings. Together with a copper-free aluminum enclosure and threaded cover, this breaker supports easier installation and long-term lifecycle cost reductions. Designed for 1" trade size, two-pole operation at 50 A and 480 Vac/250 Vdc, it integrates with Eaton and Crouse-Hinds FLB series panels. This alignment also supports reliable field maintenance with standard documentation and installation instructions.

Product Information

Extended Description

FLB140 WT50 2 Eaton: Eaton Crouse-Hinds series FLB circuit breaker, 50A, EHD frame type, Thermal magnetic, Threaded cover construction, Copper-free aluminum, Cutler-Hammer breaker, Two-pole, Non-interchangeable trip, 1", 480 Vac/250 Vdc
Product Name
Eaton Crouse-Hinds series FLB circuit breaker
Catalog Number
FLB140 WT50 2
UPC
782274019628
Product Length/Depth
6.25 in
Product Height
10.25 in
Product Width
7 in
Product Weight
13.5 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
480 Vac/250 Vdc
Number of poles
Two-pole
Trade size
1"
Manufacturer
Cutler-Hammer
Circuit breaker frame type
EHD
Enclosure cover construction
Threaded
Enclosure material
Copper-free aluminum
Special features
Non-interchangeable trip
Feature: Thermal-magnetic trip in a two-pole design provides fast, predictable protection for startup surges and fault conditions. Business Impact: Improves equipment uptime and reduces the risk of arc-related damage in critical processes. Application: Suitable for control panels in chemical processing, oil & gas, and mining sites requiring reliable 50 A protection in 480 Vac/250 Vdc systems. Feature: Explosionproof enclosure with copper-free aluminum construction lowers weight and corrosion risk. Business Impact: Enhances field durability in outdoor, damp, or chemically aggressive environments while simplifying handling and installation. Application: Outdoor switchgear, hazardous locations, and process plants where long-term lifecycle costs matter. Feature: Threaded cover and 1" trade size enable straightforward installation and retrofit. Business Impact: Reduces commissioning time and maintenance downtime during panel upgrades. Application: Retrofit projects or new installations within FLB series enclosures and similar assemblies. Feature: Non-interchangeable trip provides consistent protection characteristics across units. Business Impact: Improves maintenance planning, reduces risk of incompatible replacements, and supports regulatory compliance in mission-critical lines. Application: Industries with strict safety and performance specifications, including NEC/CEC environments and NEMA-rated applications. Feature: Broad certifications and ratings including NEC/CEC, Class I, Division 1/2, Class II/III, and NEMA 3, 4, 7, 9. Business Impact: Ensures compliance with hazardous-location requirements and simplifies procurement through a single, compatible solution. Application: Control panels and switchgear in oil, gas, chemical, and mining facilities requiring robust hazardous-location protection and regulatory alignment.

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FAQs

The FLB140 WT50 2 is designed for hazardous and classified locations, including Class I Division 1/2, Class II Division 1/2, and Class III environments. It features an explosionproof enclosure and a 1" trade-size, two-pole configuration compatible with Crouse-Hinds FLB series panels, making it ideal for oil, gas, chemical processing, and mining control panels.
It is a 50 A thermal-magnetic circuit breaker rated for 480 Vac / 250 Vdc, with a two-pole design, 1" trade size, and an EHD frame. The enclosure is copper-free aluminum and features a threaded cover for secure installation in rugged environments.
The FLB140 WT50 2 supports NEC/CEC safety standards, Hazardous/Classified Locations ratings, Class I Division 1/2, Class II Division 1/2, Class III, and NEMA ratings 3, 4, 7, 9. These certifications help ensure compliance for electrical equipment operating in hazardous industrial settings.
The non-interchangeable trip ensures consistent protective characteristics across units, simplifying replacement decisions and maintenance planning. This reduces the risk of mismatched trip curves and helps maintain regulatory compliance in critical processes often inspected in hazardous-location facilities.
Yes. With its 1" trade size, threaded cover, Ek frame (EHD), and copper-free aluminum enclosure, it integrates smoothly into Eaton Crouse-Hinds FLB series panels and compatible industrial enclosures. This alignment reduces retrofit complexity and supports straightforward field installation in hazardous-area applications.