Eaton FG3175 Engine Generator MCCB - 18 kAIC at 240V
Part Number: FG3175
Quick Summary
The Eaton FG3175 Engine Generator MCCB delivers reliable overcurrent protection for engine-driven power systems. This device reduces nuisance trips and protects windings, cables, and connected loads during startup surges, delivering greater uptime for critical equipment. UL Listed, CSA Certified, and IEC rated, it meets essential safety and performance standards across North America and international sites. With 60 Hz operation, fixed trips, and a compact three‑pole FG frame, the FG3175 integrates easily into OEM enclosures and service panels. Its footprint—7.5 in long, 5 in high, 5 in deep—and light 3 lb weight simplify installation and field maintenance while supporting dependable protection in harsh environments.
Product Information
Extended Description
FG3175 Eaton: Eaton Series C complete EG molded case circuit breaker, F-frame, FG, Fixed thermal and magnetic trips, Three-pole, 175A, 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
FG3175
UPC
782114415306
Product Length/Depth
7.5 in
Product Height
5 in
Product Width
5 in
Product Weight
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.
Certifications
UL Listed IEC Rated IEC 947-2 UL 489 CSA Certified CSA Std. C22.2 No. 5
Amperage Rating
175 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
14 kAIC at 480 Vac 18 kAIC at 240 Vac
Generator rating
63 kVA/51 kW at 240 Vac, 126 kVA/101 kW at 480 Vac, 158 kVA/126 kW at 600 Vac
Number of poles
Three-pole
Functions
Reverse
Engine generator circuit breakers catalog
Circuit Breakers Explained
Eaton Specification Sheet - FG3175
Selling Policy 25-000 - Distribution and Control Products and Services
Fixed thermal and magnetic trips (T186) provide precise overcurrent protection for engine-generator circuits. Business impact: Fast, reliable tripping minimizes nuisance trips and shields windings, cables, and connected loads during startup surges, reducing unpredictable downtime. Application: Suited for the FG frame’s three-pole configuration in engine-generator assemblies, offering dependable protection for mission-critical power systems. Three-pole FG frame with fixed line/load terminals delivers a complete protection package in a compact footprint. Business impact: Streamlines installation, lowers wiring errors, and improves panel reliability by ensuring a consistent, pre-validated protection path. Application: Ideal for OEM engine-generator enclosures and retrofit projects where a ready-to-install MCCB simplifies field assembly. Industry-leading interrupt ratings: 18 kAIC at 240 Vac and 14 kAIC at 480 Vac, with generator ratings up to 63 kVA/51 kW at 240 Vac, 126 kVA/101 kW at 480 Vac, and 158 kVA/126 kW at 600 Vac. Business impact: Enables robust short-circuit protection for large gensets without sacrificing selectivity or nuisance trips. Application: Suitable for heavy-duty engine-generator sets in manufacturing, data centers, and critical infrastructure. Certifications and standards: UL Listed, CSA Certified, IEC Rated, with approvals aligning to IEC 947-2 and UL 489. Business impact: Helps you meet regulatory and safety requirements across North America and international sites, reducing qualification lead times. Application: Fits in electrical protection schemes that require recognized compliance for engine-generator protection panels. Compact footprint and lightweight design: 7.5 in length, 5 in height, 5 in width, and 3 lb weight. Business impact: Eases installation in space-constrained enclosures, lowers freight costs, and shortens service times with easier reach during maintenance. Application: Well-suited for engine-generator switchgear, control panels, and retrofit installations where space is at a premium. Warranty and support: 1-year from installation or 18 months from shipment under Eaton Selling Policy 25-000. Business impact: Provides assurance of coverage and serviceability for OEMs and end users. Application: Applies across new installations and spare-part planning for engine-generator protection networks.
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FAQs
FG3175 is designed for engine-generator protection using a three-pole FG frame with line/load terminals. It fits OEM enclosures and retrofit panels operating at 60 Hz, providing a ready-to-install protection device with fixed thermal and magnetic trips (T186). Its compatibility with 240 to 600 Volt networks makes it suitable for most engine-generator switchgear scenarios, ensuring consistent protection and easier field commissioning.
FG3175 provides 175 A amperage rating, 600 Vac voltage rating, and a fixed trip type T186. It offers 18 kAIC at 240 Vac and 14 kAIC at 480 Vac, with generator ratings up to 63 kVA/51 kW at 240 Vac, 126 kVA/101 kW at 480 Vac, and 158 kVA/126 kW at 600 Vac. This combination supports reliable protection for large engine-generator loads while maintaining selective coordination in complex systems.
FG3175 is UL Listed, CSA Certified, and IEC Rated, with compliance to UL 489 and IEC standards. These certifications underpin safe, regulatory-compliant protection for engine-generator systems across North America and international sites, helping with vendor qualification, inspections, and risk management in industrial environments.
FG3175 ships under Eaton’s Selling Policy 25-000 with a one-year warranty from the date of installation or eighteen months from shipment, whichever occurs first. This coverage supports legitimate service needs, replacement considerations, and ensures ongoing protection performance during the asset’s lifecycle in manufacturing or data-center applications.
FG3175 features a compact footprint: 7.5 in length, 5 in height, 5 in width, and a 3 lb weight with line/load terminals for straightforward integration. Installation benefits include easier enclosure fitment, reduced wiring complexity, and minimized field labor. Ensure proper mounting within engine-generator switchgear and verify compatibility with voltage networks at 240, 480, or 600 Vac for reliable protection.