Eaton / Cutler-Hammer LGH3250FAG Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer LGH3250FAG - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Delivering exceptional short-circuit defense, this 250A Eaton circuit breaker is engineered for critical commercial and motor control applications. It provides reliable long-time and instantaneous (LI) protection within a compact Series G footprint. The LGH3250FAG is designed to fit seamlessly into Eaton panelboards, switchboards, and industrial enclosures. This unit-mount MCCB utilizes standard line and load terminals, accommodating a wide range of wire sizes for flexible installation.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | LGH3250FAG |
| Series | LGH |
| Amperage | 250A |
| 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
6 answersWhat does the 'H' in the LGH3250FAG catalog number indicate?
The 'H' designates this as a high interrupting capacity version within the Eaton Series G LG-frame family. It delivers a 65 kAIC rating at 480 VAC and 100 kAIC at 240 VAC.
How is the trip unit configured on the LGH3250FAG?
This breaker features a fixed thermal and adjustable magnetic (LI) trip unit. The thermal element provides fixed overload protection, while the magnetic short-circuit pickup can be adjusted in the field to coordinate with your specific system requirements.
Are line and load lugs included with this breaker?
Yes, the 'G' suffix in the LGH3250FAG catalog number indicates that standard line and load terminals are included. These feed-thru lugs accept two 2 AWG to 500 kcmil copper or aluminum conductors per phase.
Which enclosures and distribution equipment are compatible with this breaker?
The LGH3250FAG is designed for installation in Eaton Series G panelboards, switchboards, and motor control centers that are configured to accept LG-frame molded case circuit breakers.
Can this LG-frame breaker be used in DC applications?
Yes, in addition to its AC ratings, the LGH3250FAG is rated for DC electrical systems up to 250 VDC, where it provides a 42 kAIC interrupting rating.
What safety precautions are required when adjusting the magnetic trip settings?
Always verify that the circuit breaker and surrounding equipment are fully de-energized before making any adjustments to the magnetic trip dial. Follow standard lockout and tagout procedures to prevent accidental contact with live components.
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