Eaton KG3350S46Z04 Engine Generator MCCB - UL Listed
Part Number: KG3350S46Z04
Quick Summary
Eaton KG3350S46Z04 Engine generator molded case circuit breaker protects heavy-duty generator power systems with precise protection. Factory floor teams face nuisance trips and wiring challenges when upgrading generator protection, which can drive unscheduled downtime. This unit carries UL Listed, IEC Rated, and CSA Certified marks, reinforcing safety and regulatory alignment. Designed for 60 Hz, 600 VAC environments, it delivers a 350 A rating with straightforward line/load terminals and an optional shunt trip to improve uptime and maintenance efficiency.
Product Information
Extended Description
KG3350S46Z04 Eaton: Eaton Series C complete EG molded case circuit breaker, K-frame, KG, Thermal-magnetic trip, 500-1000A, Three-pole, 350A, 600 Vac, 18 kAIC at 240 Vac, 14 kAIC at 480 Vac, 12-24 Vac/dc rear w/ right pigtail, Reverse feed, 60 Hz, 3TA400K
Product Name
Eaton complete engine generator molded case circuit breaker
Catalog Number
KG3350S46Z04
UPC
782113491608
Product Length/Depth
12 in
Product Height
6 in
Product Width
7 in
Product Weight
13 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 UL 489 CSA Std. C22.2 No. 5 UL Listed file E7819 QPL17361
Catalog Notes
Includes both line and load terminals
Type
Engine generator
Amperage Rating
350 A
Voltage rating
600 Vac
Trip Type
T268
Circuit breaker type
KG
Circuit breaker frame type
Complete breaker
Shunt trip
12-24 Vac/dc right pigtail same side
Terminals
Without terminals, optional line and load
Frame
K
Frequency rating
60 Hz
Class
Engine generator
Line
3TA400K
Prod load
3TA400K
Interrupt rating
14 kAIC at 480 Vac 18 kAIC at 240 Vac
Generator rating
126 kVA/101 kW at 240 Vac, 253 kVA/202 kW at 480 Vac, 316 kVA/253 kW at 600 Vac
Number of poles
Three-pole
Trip rating
500-1000 A
Functions
Reverse
Engine generator circuit breakers catalog
Circuit Breakers Explained
Eaton Specification Sheet - KG3350S46Z04
Implementation of arc flash mitigating solutions at industrial manufacturing facilities
Feature: Thermal-magnetic trip (T268) provides precise overcurrent protection. Business Impact: Reduces the risk of arc faults and equipment damage, lowering downtime and maintenance costs. Application: Ideal for engine-generator sets and 60 Hz generator distribution panels. Feature: 350 A amperage rating with 600 Vac operation. Business Impact: Scales protection to mid-sized generator outputs (126 kVA/101 kW at 240 VAC, up to 316 kVA/253 kW at 600 VAC), enabling robust protection without oversizing. Application: Suitable for industrial generator sets and critical load centers. Feature: Shunt trip 12-24 Vac/dc with right-side pigtail. Business Impact: Enables remote tripping for improved safety and coordinated shutdowns in automation environments. Application: Remote control integration in generator control panels. Feature: Includes line and load terminals. Business Impact: Simplifies installation, reduces accessory costs, and speeds panel commissioning. Application: Ready-to-install in new builds or modernization projects. Feature: Frame K, three-pole design with 60 Hz operation. Business Impact: Robust mechanical mounting and consistent performance across typical industrial power systems. Application: Engine-generator protection in compact control enclosures. Feature: Wide compliance footprint (UL Listed, IEC Rated, CSA Certified). Business Impact: Eases regulatory approval and cross-border deployments. Application: International generator protection programs and OEM applications. Feature: Warranty and service policy. Business Impact: Provides predictable risk management with a documented support window (one year from installation or 18 months from shipment). Application: Procurement planning and service budgeting for industrial facilities.
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FAQs
Install the KG3350S46Z04 using its three-pole frame in a suitable enclosure, connect line and load terminals as specified in the catalog notes, and wire the right-side shunt trip (12-24 Vac/dc) if remote trip is required. Ensure proper mounting and adherence to 60 Hz, 600 Vac system voltages.
Key specs include a 350 A rating, 600 Vac operation, 3-pole configuration, thermal-magnetic T268 trip, interrupt ratings of 14 kAIC at 480 Vac and 18 kAIC at 240 Vac, and generator ratings of 126 kVA/101 kW at 240 Vac, 253 kVA/202 kW at 480 Vac, and 316 kVA/253 kW at 600 Vac.
Yes. The KG3350S46Z04 supports reverse feed configurations and includes a right-side shunt trip as an option, enabling safe, remote control in generator-based power systems.
It is UL Listed, IEC Rated, and CSA Certified, with additional references to IEC 947-2, UL 489, CSA Std. C22.2 No. 5, UL Listed file E7819, and QPL17361, ensuring broad regulatory acceptance.
Eaton offers a one-year warranty from installation or eighteen months from shipment, whichever occurs first, under policy 25-000. Comprehensive support resources and the specification sheet are available in the Downloads section.