Eaton FG3225 Engine Generator MCCB - UL Listed/IEC Rated
Part Number: FG3225
Quick Summary
Eaton FG3225 Engine generator molded case circuit breaker protects engine-generator power systems in demanding environments. When uptime matters, protection must be reliable and properly matched to generator sets to avoid nuisance trips and equipment damage. This device carries UL Listed, IEC Rated, and CSA Certified approvals to meet essential safety and interoperability standards across regions. With 225 A at 600 Vac in a three-pole configuration and line and load terminals included, installation is straightforward for generator packages. Designed for 60 Hz operation with fixed pickup, it supports scalable, compliant protection for engine-driven power systems in industrial facilities.
Product Information
Extended Description
FG3225 Eaton: Molded Case Circuit Breaker, Engine generator, 60 Hz, Three-pole, 225A, Line and load terminals
Product Name
Eaton complete engine generator molded case circuit breaker
Catalog Number
FG3225
UPC
782114415283
Product Length/Depth
7.7 in
Product Height
4.9 in
Product Width
4.9 in
Product Weight
4.3 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.
Compliances
MIL-DTL-17361
Certifications
UL Listed CSA Certified IEC Rated UL 489 UL Listed file E7819 CSA Std. C22.2 No. 5 IEC 947-2 QPL17361
Catalog Notes
Includes both line and load terminals
Type
Engine generator
Amperage Rating
225 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
81 kVA/65 kW at 240 Vac, 162 kVA/130 kW at 480 Vac, 203 kVA/162 kW at 600 Vac
Number of poles
Three-pole
Functions
Reverse
Engine generator circuit breakers catalog
Circuit Breakers Explained
Eaton Specification Sheet - FG3225
Feature → Business Impact → Application: The FG3225 provides 225 A at 600 Vac in a three-pole configuration, enabling precise protection for engine-generator packages while supporting reliable power distribution in critical facilities. This translates to reduced nuisance trips and minimized unplanned downtime, improving overall plant availability and maintenance planning for standby or prime power gensets. Application: ideal for industrial generators where fast, predictable protection is required to safeguard both equipment and personnel in manufacturing, data centers, and process plants. Feature → Business Impact → Application: Includes line and load terminals, simplifying wiring and reducing installation time, which lowers labor costs and errors during panel assembly. Application: suitable for retrofit or new generator panels requiring a complete MCCB solution that ships ready to install.
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FAQs
FG3225 is designed for three-pole, 60 Hz engine generator applications, rated at 225 A and 600 Vac. It includes both line and load terminals and uses a fixed pickup (T186). When integrating into a generator panel, confirm the system operates at 60 Hz and ensure the terminals and frame compatibility align with the device’s FG-series specifications.
FG3225 carries UL Listed, CSA Certified, and IEC Rated markings, along with MIL-DTL-17361 compliance. These certifications validate safety, performance, and cross-border interoperability, reducing procurement risk for global projects and ensuring the breaker meets essential regulatory requirements for engine-generator protection.
The device provides a 225 A rating at 600 Vac in a three-pole configuration with a fixed pickup. Its interrupt ratings are 18 kAIC at 240 Vac and 14 kAIC at 480 Vac, supporting robust short-circuit protection on generator circuits while aligning with standard generator protection practices for 60 Hz operation.
FG3225 offers reliable engine-generator protection with ready-to-wire terminals, certified safety compliance, and a standardized form factor. This reduces downtime risk, protects critical loads, and simplifies procurement and maintenance. Its installation efficiency and conformity with industry standards help justify total cost of ownership in mission-critical applications.
You can access Eaton’s Engine Generator Molded Case Circuit Breakers catalog, the FG3225 specification sheet, and the Circuit Breakers Explained video. These resources provide detailed wiring, ratings, and performance data to support selection, installation, and ongoing maintenance for engine-generator protection.