Eaton FG3100 Engine Generator MCCB - IEC/UL Listed

Part Number: FG3100
Manufacturer
Eaton
Part number
FG3100

Quick Summary

The Eaton FG3100 engine generator molded case circuit breaker protects engine-driven electrical systems in industrial generator installations. It addresses nuisance trips and miscoordination during engine start-up and sudden load changes. UL Listed, CSA Certified, and IEC rated, it meets global safety and reliability standards. With three-pole design, line and load terminals, and a compact footprint, installation is straightforward for panel builders. This device supports 100 A at 600 Vac and 36–90 kVA generator ratings, delivering predictable protection and enabling reliable generator performance in demanding environments. Engineers value its compliance with MIL-DTL-17361 and QPL17361 for critical standby and industrial power systems, while field teams benefit from simplified retrofits and reduced maintenance overhead.

Product Information

Extended Description

FG3100 Eaton: Eaton Series C complete EG molded case circuit breaker, F-frame, FG, Fixed thermal and magnetic trips, Three-pole, 100A, 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
FG3100
UPC
786679269749
Product Length/Depth
7 in
Product Height
6 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.
Compliances
MIL-DTL-17361
Certifications
IEC Rated CSA Certified UL Listed IEC 947-2 CSA Std. C22.2 No. 5 UL Listed file E7819 UL 489 QPL17361
Catalog Notes
Includes both line and load terminals
Type
Engine generator
Amperage Rating
100 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
36 kVA/29 kW at 240 Vac, 72 kVA/58 kW at 480 Vac, 90 kVA/72 kW at 600 Vac
Number of poles
Three-pole
Functions
Reverse
Feature → Business Impact → Application: The FG3100 uses fixed thermal and magnetic trips to provide immediate fault clearing, reducing downtime and equipment damage on engine-driven generators. This translates to lower maintenance costs and higher Uptime for standby power applications in industrial facilities and critical processes. Application: Ideal for engine generator sets requiring reliable protection at 60 Hz and 600 Vac, including data centers and manufacturing lines. Feature → Business Impact → Application: Three-pole FG frame with line and load terminals simplifies panel integration and wiring accuracy. Installation time is reduced, enabling faster build-outs of power-distribution enclosures and retrofits in complex electrical rooms. Application: Suitable for OEMs and panel builders assembling generator protection in industrial switches and control panels. Feature → Business Impact → Application: High interrupt ratings—18 kAIC at 240 Vac and 14 kAIC at 480 Vac—support robust fault isolation and dependable performance in high-demand generator systems. This improves compliance with electrical codes and reduces the risk of cascading failures. Application: Critical standby power installations and engine-driven equipment drives. Feature → Business Impact → Application: Generator rating coverage of 36 kVA/29 kW at 240 Vac, 72 kVA/58 kW at 480 Vac, and 90 kVA/72 kW at 600 Vac provides scalable protection across rolling generator configurations. This avoids over- or under-protection, optimizing lifecycle cost. Application: Industrial facilities with mixed load profiles and multi-generator configurations. Feature → Business Impact → Application: Certifications, including IEC Rated, UL Listed, and CSA Certified, together with MIL-DTL-17361 compliance, ensure global acceptance and streamlined procurement for multinational projects. Application: Compliance-focused deployments in aerospace, energy, and process industries. Feature → Business Impact → Application: Includes both line and load terminals and a compact, space-efficient footprint, enabling flexible installation in tight electrical rooms and retrofit projects without expansive panel modifications. Application: Retrofit projects and new builds in confined industrial spaces.

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FAQs

FG3100 fits engine generator sets that require a three-pole molded case circuit breaker with line and load terminals. It supports 60 Hz operation at 240 V, 480 V, and 600 V with ratings up to 100 A and 18 kAIC, enabling straightforward integration into standard generator control panels and switchgear enclosures.
FG3100 employs fixed thermal and magnetic trips with a T186 trip type to manage startup transients and sudden load changes, preventing nuisance trips while maintaining reliable protection. Its 18 kAIC at 240 Vac and 14 kAIC at 480 Vac ratings ensure fast fault clearance in demanding engine-driven systems.
Yes. FG3100 is UL Listed, IEC Rated, and CSA Certified, meeting global safety and reliability requirements. It also aligns with MIL-DTL-17361 standards, providing confidence for aerospace and industrial applications and simplifying cross-border procurement.
Ideal for engine generator protection in standby and prime power scenarios, FG3100 supports 100 A at 600 Vac with scalable generator ratings from 36 to 90 kVA. It is well-suited for data centers, manufacturing floors, and remote facilities where reliable engine-driven protection and compact installation are essential.
FG3100 reduces downtime through fast, reliable tripping and minimizes maintenance costs by protecting engine-driven systems from faults. The included line/load terminals speed installations, while certifications and MIL-DTL-17361 compliance support long-term asset protection and lower lifecycle risk for critical power infrastructure.