Eaton / Cutler-Hammer LG3500A12S03 Molded Case Circuit Breaker
- 500A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer LG3500A12S03 - 500A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Rated for 500 amps, this Series G molded case circuit breaker is specifically engineered for engine generator applications requiring closer low-level short circuit protection. It mounts into Eaton Pow-R-Line panelboards and switchboards, utilizing a fixed thermal-magnetic trip with a specialized low magnetic pickup. The unit comes equipped with a factory-installed 12-24V shunt trip and auxiliary switch for advanced control. It is fully reverse feed capable and delivers 14kAIC at 480VAC.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | LG |
| Amperage | 500A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 600VAC |
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line Panelboards, Switchboards, Engine Generators |
| Wire Gauge | (2) 3/0 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Auxiliary Switch (Factory Installed), Shunt Trip (Factory Installed), Line and Load Lugs Included (TA602LD) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed, Generator Protection |
Product FAQs
6 answersWhat applications is the Eaton LG3500A12S03 circuit breaker designed for?
This breaker is specifically engineered for diesel engine-powered standby generators. It features a specialized low magnetic pickup range to provide closer low-level short circuit protection for generators with low short circuit capacity.
Does the LG3500A12S03 include any factory-installed accessories?
Yes, the A12 suffix indicates it comes with a factory-installed 2A-2B auxiliary switch, providing two normally open and two normally closed contacts. The S03 suffix signifies a factory-installed 12-24V AC/DC shunt trip for remote tripping capabilities.
Can the Eaton LG3500A12S03 be reverse fed?
Yes, this breaker is suitable for reverse feed applications, allowing power to be supplied to either the line or load terminals.
How does the magnetic trip function differ on this engine generator breaker compared to standard breakers?
The fixed magnetic trip on this generator breaker has a lower pickup range, typically 2 to 5 times the continuous current rating. This allows it to respond faster to low-level short circuits commonly found in generator applications.
What size wire can be used with the lugs on the LG3500A12S03?
The included line and load lugs accept two aluminum or copper conductors per phase, ranging from 3/0 AWG to 350 kcmil.
Which Eaton enclosures are compatible with the LG3500A12S03 breaker?
This L-frame breaker is designed for unit mounting in Eaton Pow-R-Line panelboards, switchboards, and dedicated engine generator enclosures.
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