Eaton FG3045 Engine Generator MCCB - 18 kAIC 240 Vac
Part Number: FG3045
Quick Summary
Eaton complete engine generator molded case circuit breaker protects engine-generator power systems in harsh industrial environments. Maintenance teams struggle with unexpected trips and downtime; this unit delivers fixed thermal and magnetic trips for fast, predictable protection. This device carries IEC rated, UL Listed, and CSA Certified markings, simplifying global compliance and reducing risk in mission-critical installations. With a 45 A rating and 600 Vac capability built into a three-pole FG frame, it supports reliable, code-compliant engine-generator protections. This makes it a practical choice for electrical protection and circuit control in OEMs, data centers, and industrial facilities seeking uptime and cost control.
Product Information
Extended Description
FG3045 Eaton: Eaton complete engine generator MCCB, Series C complete EG, F-frame, FG, Fixed thermal and magnetic trips, Three-pole, 45A, 600 Vac, 18 kAIC at 240 Vac, 14 kAIC at 480 Vac, Line/load, Engine generator, Reverse, 60 Hz, Fixed
Product Name
Eaton complete engine generator molded case circuit breaker
Catalog Number
FG3045
UPC
786679269626
Product Length/Depth
7 in
Product Height
5 in
Product Width
5 in
Product Weight
4 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
IEC Rated UL Listed CSA Certified IEC 947-2 CSA Std. C22.2 No. 5 UL 489
Amperage Rating
45 A
Voltage rating
600 Vac
Trip Type
T186
Circuit breaker type
FG
Circuit breaker frame type
Complete breaker
Terminals
Line and load
Frame
F
Frequency rating
60 Hz
Class
Engine generator
Pickup
Fixed
Interrupt rating
18 kAIC at 240 Vac 14 kAIC at 480 Vac
Generator rating
16 kVA/13 kW at 240 Vac, 32 kVA/29 kW at 480 Vac, 41 kVA/32 kW at 600 Vac
Number of poles
Three-pole
Functions
Reverse
Engine generator circuit breakers catalog
Circuit Breakers Explained
Eaton Specification Sheet - FG3045
Feature: Fixed thermal and magnetic trips provide fast, deterministic protection. Business Impact: Reduces nuisance trips and equipment damage, improving uptime and lowering maintenance costs. Application: Engine-generator protection where continuous power and safety are critical. The FG3045’s three-pole FG frame integrates smoothly with engine-generator systems, enabling straightforward field wiring and simplified coordination with line/load terminals. Feature: 45 A amperage rating and 600 Vac voltage rating deliver robust overload protection for medium-power gensets. Business Impact: Supports compliant protection schemes for a wide range of engine-driven applications, reducing wiring changes and upgrade costs. Application: Industrial generator sets at 50/60 Hz with 240/480/600 Vac service. Feature: Interrupt ratings of 18 kAIC at 240 Vac and 14 kAIC at 480 Vac ensure strong short-circuit mitigation. Business Impact: Minimizes damage and downtime during surge events, protecting generators and switchgear. Application: High-energy applications where fault current is high. Feature: Line and load terminals with a complete breaker frame enable easy installation and serviceability. Business Impact: Faster commissioning, reduced labor costs, and safer maintenance routines. Application: OEM integration and serviceable protection in engine-generator circuits. Feature: Certifications and standards compliance (IEC Rated, UL Listed, CSA Certified) simplify global procurement. Business Impact: Streamlines regulatory approvals and cross-border installs, lowering project risk. Application: Global manufacturing, facilities with strict safety and compliance requirements. Feature: Warranty and support under Eaton policy provides reliability assurances. Business Impact: Lower total cost of ownership through predictable service life and clear replacement timelines. Application: Any critical protection role in engine-generator power systems.
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FAQs
FG3045 installs with standard line and load terminals on a three-pole FG frame. Ensure correct wiring to the engine-generator bus, observe 60 Hz system requirements, and coordinate with the generator’s voltage class (240, 480, or 600 Vac). Provide proper enclosure clearance and follow Eaton catalog guidelines to maintain thermal performance and service access.
18 kAIC at 240 Vac means the breaker can interrupt up to 18 kiloamperes of fault current at 240 Vac without damage, supporting strong protection for high-energy faults. At 480 Vac the interrupt rating is 14 kAIC, which guides coordination with your system’s fault current and surrounding switchgear to prevent cascade trips.
Yes. FG3045 is specified for 60 Hz operation, three-pole configurations, and a 600 Vac rating, making it suitable for industrial engine-generator protection where reliable tripping, coordination with generator protections, and compliance with applicable standards are required.
FG3045 carries IEC rated, UL Listed, and CSA Certified markings. These certifications ensure the device meets international safety and performance standards, facilitating global procurement, reducing compliance risk, and enabling use across diverse regulatory environments.
The fixed trip design minimizes calibration needs and prevents drift over time, reducing maintenance overhead. The robust 45 A / 600 Vac protection, combined with high interrupt ratings, lowers the risk of costly faults and downtime in engine-generator systems, delivering a favorable total cost of ownership over the product lifecycle.