Eaton / Cutler-Hammer LGH3400FAG Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer LGH3400FAG - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
A robust solution for high-capacity distribution, the Eaton LGH3400FAG is a 3-pole, 400A molded case circuit breaker. It fits into Eaton Series G switchboards, panelboards, and motor control centers. The breaker is equipped with a fixed thermal and adjustable magnetic trip unit, allowing precise calibration of instantaneous fault protection. Featuring a 65 kAIC rating at 480VAC and an 80% continuous rating, this LG-frame MCCB ensures reliable performance in industrial applications.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | LGH3400FAG |
| Series | LGH |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC, 42kA @ 250VDC |
| Frame Type | LG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series G Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (2) 2 AWG - 500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 2 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Terminals |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, KEMA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, 80% Rated |
Product FAQs
8 answersWhat wire sizes are accepted by the standard lugs on the LGH3400FAG?
This breaker includes standard line and load lugs that accept two 2 AWG to 500 kcmil copper or aluminum conductors per phase.
What does the "FAG" suffix indicate in the LGH3400FAG catalog number?
In Eaton Series G nomenclature, "FA" indicates a fixed thermal and adjustable magnetic trip unit. The "G" signifies that standard line and load terminals are included with the breaker.
What does the "H" in the LGH3400FAG catalog number signify?
In Eaton's Series G LG-frame family, the "H" designates the high-interrupting tier, which provides a short-circuit interrupting rating of 65 kAIC at 480 VAC and 100 kAIC at 240 VAC.
Which Eaton equipment is compatible with the LGH3400FAG breaker?
This LG-frame breaker is designed for unit mounting in Eaton Series G panelboards, switchboards, and motor control centers.
Can the trip settings be adjusted on the LGH3400FAG?
The thermal protection for long-time overloads is fixed at 400 amps. However, the magnetic protection for instantaneous short circuits is adjustable, allowing you to fine-tune the response for your specific application.
Is the LGH3400FAG rated for direct current applications?
Yes, in addition to its AC ratings, this breaker is rated for up to 250 VDC with a direct current interrupting capacity of 42 kAIC.
What type of protection does the "LI" trip function provide?
The LI designation means the trip unit provides Long-Time thermal protection against sustained overloads and Instantaneous magnetic protection against short circuits.
Can this 3-pole breaker be used in a 2-pole application?
Yes, according to Eaton guidelines for LG-frame breakers, you can use the two outer poles for two-pole applications.
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