Eaton LHH3125FFG Molded Case Breaker - UL Listed
Part Number: LHH3125FFG
Quick Summary
Eaton LHH3125FFG molded case breaker provides reliable overcurrent protection for electrical panels and motor control centers. Engineers often struggle to find a compatible MCCB that fits LG-frame panels and delivers correct interrupt ratings without costly wiring changes. This unit is CSA Certified, UL Listed, and HACR rated, aligning with essential safety and performance requirements for industrial controls. The Series G complete breaker supports three-pole LG-frame installations with a 125 A rating and 600 Vac, delivering predictable protection across 240–600 V applications. Designed to streamline MOEM MCCB product selection and panel integration, it enables safer commissioning, faster maintenance, and lower lifecycle costs for OEMs and end users.
Product Information
Extended Description
LHH3125FFG Eaton: Eaton Series G molded case circuit breaker, LG-frame, LH, Fixed thermal, fixed magnetic trip, Three-pole, 125A, 600 Vac, 100 kAIC at 240 Vac, 70 kAIC at 415 Vac, 65 kAIC at 480 Vac, 35 kAIC at 600 Vac, Line and load, Metric
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
LHH3125FFG
UPC
786685226910
Product Length/Depth
0.01 in
Product Height
0.01 in
Product Width
0.01 in
Product Weight
0.01 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
CSA Certified UL Listed
Catalog Notes
LG breaker is HACR rated
Type
Complete breaker
Amperage Rating
125 A
Voltage rating
600 Vac
Trip Type
T186
Circuit breaker type
LH
Circuit breaker frame type
Complete breaker
Terminals
Line and load
Frame
LG
Mounting hardware
Metric
Interrupt rating
70 kAIC at 415 Vac 35 kAIC at 600 Vac 100 kAIC at 240 Vac 65 kAIC at 480 Vac
Number of poles
Three-pole
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
Breaker service centers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
MOEM MCCB product selection guide
MOEM MCCB product selection guide
MOEM MCCB product selection guide
LG-frame three-pole design provides compact protection without requiring custom enclosures, reducing panel depth and field wiring. Business impact is faster installation, fewer part numbers, and better inventory control across sites. This is ideal for factory automation panels and control cabinets where space is at a premium and upgrades are common.\n\nFixed thermal and fixed magnetic trip (T186) delivers dependable overload and short-circuit protection at 125 A and 600 Vac. Business impact includes predictable trip behavior, minimized nuisance trips, safer startup sequencing, and improved system uptime. Application spans motor drives, conveyors, and processing lines in manufacturing environments.\n\nHigh interrupt ratings across voltages—up to 100 kAIC at 240 Vac, 70 kAIC at 415 Vac, 65 kAIC at 480 Vac, and 35 kAIC at 600 Vac—strengthen fault-room resilience. Business impact: enhanced upstream coordination and reduced need for oversized protection. Application: critical feeders in machine cells and automation lines.\n\nMetric mounting hardware and LG-frame compatibility support international installation ease, standardized accessories, and faster procurement. Business impact: streamlined sourcing, reduced lead times, and consistent installation practices. Application: global plants following MOEM MCCB product selection guidelines and Series G MCCBs.\n\nCSA Certified, UL Listed, and HACR rated certifications provide regulatory confidence, audit readiness, and safer HVAC integration. Business impact: easier compliance across regions, safer equipment integration, and lower risk during audits. Application: industrial controls, HVAC-driven equipment, and control panels in North America.
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FAQs
The Eaton LHH3125FFG is designed for LG-frame, three-pole installations with line and load terminals and metric mounting hardware. To install, verify the panel is rated for 600 Vac and 125 A, mount the breaker on a compatible bus, wire the line and load conductors per local codes, and secure termination using prescribed torque values. Ensure the fixed thermal/magnetic trip is set for your load profile.
LHH3125FFG is a three-pole LG-frame MCCB rated 125 A at up to 600 Vac with fixed thermal and fixed magnetic trip (T186). It delivers interrupt ratings up to 100 kAIC at 240 Vac, 70 kAIC at 415 Vac, 65 kAIC at 480 Vac, and 35 kAIC at 600 Vac. This combination supports reliable protection for diverse panel and MCC loads.
Yes, the LHH3125FFG is well-suited for motor control centers and control panels that require coordinated protection, line/load configuration, and HACR-rated operation. Its three-pole LG-frame design simplifies integration with standard MCCB accessories, and its 125 A rating aligns with common MCCB sizing in industrial automation. The fixed trip characteristics help avoid nuisance tripping during startup.
The LHH3125FFG carries CSA Certified and UL Listed marks and is HACR rated, aligning with safety codes for electrical protection devices in North American and HVAC environments. This certification set helps ensure compliance during audits and reduces design risk when specifying MCCBs for industrial machines, panels, and control systems. The HACR rating is particularly relevant for motor-driven loads.
Using the LHH3125FFG can lower lifecycle costs through durable protection, reduced nuisance tripping, and easier maintenance. The 125 A rating and broad interrupt capability minimize upgrade needs when expanding lines or adding motors. Certified components simplify procurement and spare part management, while metric mounting and LG-frame compatibility speed installation and commissioning in new builds and retrofit projects.