Description
The Eaton KG3400 is a molded case circuit breaker designed specifically for engine generator protection in industrial and standby power systems. This Eaton part number KG3400 provides a 400 amp rating with a three-pole configuration and supports systems operating up to 600 Vac. Built on the K-frame platform with a specialized generator protection design, it ensures reliable interruption and protection for generator-fed electrical distribution circuits.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Eaton |
| Category |
Circuit Breaker |
| Part Number |
KG3400 |
| Subcategory |
Molded Case Circuit Breaker |
| Product Type |
Engine Generator Molded Case Circuit Breaker |
| Series / Frame |
K Frame |
| Circuit Breaker Type |
KG |
| Number of Poles |
Three-pole |
| Amperage Rating |
400 A |
| Voltage Rating |
600 Vac |
| Trip Type |
T268 |
| Trip Rating Range |
1000–2000 A |
| Frequency Rating |
60 Hz |
| Interrupt Rating |
14 kAIC @ 480 Vac; 18 kAIC @ 240 Vac |
| Generator Rating |
144 kVA / 116 kW @ 240 Vac; 289 kVA / 231 kW @ 480 Vac; 361 kVA / 289 kW @ 600 Vac |
| Shunt Trip |
12–24 Vac/dc same side with left pigtail |
| Terminals |
Line and Load |
| Certifications |
UL Listed, CSA Certified, IEC Rated |
| Compliance |
MIL-DTL-17361 |
| Dimensions (L × W × H) |
14.75 × 6.75 × 6.25 in |
| Weight |
13.24 lb |
Information About KG3400
The KG3400 is an engine generator molded case circuit breaker manufactured by Eaton to safeguard generator-based power systems. It is part of the K-frame breaker family and incorporates a T268 trip unit designed for generator applications with reverse power functionality. The breaker includes both line and load terminals and integrates a shunt trip mechanism for remote tripping capability in control systems. With UL, CSA, and IEC certifications and compliance with MIL-DTL-17361 requirements, the device is engineered for demanding power generation, backup power systems, and critical infrastructure installations.
Key Features:
- 400 Amp Current Rating: Provides reliable overcurrent protection for generator-powered electrical systems.
- Engine Generator Protection: Designed specifically for generator circuits and standby power installations.
- K-Frame Molded Case Breaker: Built on Eaton’s robust K-frame platform for heavy-duty applications.
- T268 Trip Unit: Engineered to handle generator operating conditions with reliable fault response.
- Reverse Power Protection Function: Helps prevent generator damage from reverse current conditions.
- Integrated Shunt Trip: Includes a 12–24 Vac/dc shunt trip for remote control and system integration.
- High Voltage Capability: Supports operation up to 600 Vac in industrial generator systems.
- Certified for Industrial Use: UL Listed, CSA Certified, IEC rated, and compliant with MIL-DTL-17361 standards.
The KG3400 delivers the reliability and precision required for protecting generator-driven power distribution systems and standby power infrastructure.
