Eaton FLB141 WT40 3 Circuit Breaker - Hazardous Locations
Part Number: FLB141 WT40 3
Quick Summary
Eaton FLB141 WT40 3 circuit breaker protects industrial electrical systems in hazardous locations. Maintenance downtime and regulatory risk challenge engineers when selecting reliable explosion‑proof protection. This unit meets NEC/CEC requirements and Hazardous/Classified Locations ratings, including Class I Division 1 and 2, Class II, and Class III, plus NEMA ratings 3, 4, 7, 9. By combining a threaded enclosure, copper‑free aluminum construction, and a thermal‑magnetic trip, it supports safer installations, easier maintenance, and compliant operation across mining, chemical processing, and power distribution. The 1‑1/4" trade size and compact footprint simplify panel integration while delivering durability and a lower total cost of ownership.
Product Information
Extended Description
FLB141 WT40 3 Eaton: Eaton Crouse-Hinds series FLB circuit breaker, 40A, EHD frame type, Thermal magnetic, Threaded cover construction, Copper-free aluminum, Cutler-Hammer breaker, Three-pole, Non-interchangeable trip, 1-1/4", 480 Vac
Product Name
Eaton Crouse-Hinds series FLB circuit breaker
Catalog Number
FLB141 WT40 3
UPC
782274721453
Product Length/Depth
8.5 in
Product Height
13.38 in
Product Width
9.13 in
Product Weight
1 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
40 A
Circuit breaker type
Thermal magnetic
Voltage rating
480 Vac
Number of poles
Three-pole
Trade size
1-1/4"
Manufacturer
Cutler-Hammer
Circuit breaker frame type
EHD
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 Canadian certification
FLB Explosionproof Circuit Breakers Canadian certification
IF 1016 - FLB Series Circuit Breakers
Eaton Specification Sheet - FLB141 WT40 3
Feature: Three-pole design with a 40 A thermal-magnetic trip provides precise overcurrent protection for three-phase circuits. Business Impact: tighter trip coordination minimizes nuisance trips and improves motor protection in critical processes. Application: ideal for 480 Vac distribution to motors and feeders in hazardous locations. Feature: Threaded enclosure cover and copper-free aluminum construction. Business Impact: robust, corrosion-resistant housing that withstands harsh environments and simplifies field servicing. Application: installation in chemically aggressive, dusty or humid locations where reliable closure is essential. Feature: EHD frame with a 1-1/4" trade size and a compact footprint (8.5 in depth, 13.38 in height, 9.13 in width) weighing about 1 lb. Business Impact: easy drop-in replacement for compatible panels, reducing retrofit time and spare parts inventory. Application: upgrades in control panels and power-distribution enclosures across hazardous facilities. Feature: NEC/CEC compliance and NEMA ratings 3, 4, 7, 9. Business Impact: regulatory conformity and audit-ready documentation, enabling faster approvals and safer installations. Application: suitable for chemical plants, refineries, mines, and other high-risk environments. Feature: Non-interchangeable trip and threaded cover enclosure. Business Impact: ensures proper protective coordination and reduces mis-assembly risks, with durable field-maintainable design. Application: critical process lines where defined protection is required.
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FAQs
Install the FLB141 WT40 3 as a three-pole protection device inside compatible panels. Use the threaded enclosure cover for a secure seal and mount on standard DIN rail or panel surfaces per Eaton installation instructions. Ensure correct wiring of the 480 Vac circuit while observing copper-free aluminum conductor handling and torque recommendations to maintain listed enclosure integrity.
This model uses a thermal-magnetic trip with a 40 A amperage rating. It is a three-pole device rated for 480 Vac, designed for precise overcurrent protection with non-interchangeable trip, ensuring consistent protection for three-phase circuits in demanding environments.
Yes. The FLB141 WT40 3 is approved for Hazardous/Classified Locations with NEC/CEC compliance and specific Class I, Division 1 and 2, Class II, and Class III listings, making it appropriate for Class I Division 1 environments when installed per the product’s certification guidance and local codes.
The unit aligns with NEC/CEC standards, carries NEMA ratings 3, 4, 7, 9, and is designed for hazardous-location use. It’s referenced in UL and Canadian certification materials and supports safe operation in demanding industrial settings, including mining and chemical processing.
The rugged copper-free aluminum enclosure and threaded cover reduce corrosion risk and simplify serviceability in harsh environments. The thermal-magnetic trip provides dependable protection with fewer nuisance trips, reducing downtime, while the compact EHD frame and 1-1/4" trade size streamline panel integration and spare parts management, delivering lower total cost of ownership.