Eaton / Cutler-Hammer LM3600 Molded Case Circuit Breaker
- 600A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer LM3600 - 600A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered for industrial power distribution, the Eaton LM3600 is a 3-pole, 600A molded case circuit breaker from the Series C family. It provides robust thermal-magnetic protection with adjustable magnetic trip settings. This unit mount L-Frame breaker installs into Eaton Pow-R-Line 4 panelboards and legacy Westinghouse switchboards. Serving as a reliable replacement for aging infrastructure, it is superseded by the LD3600. Rated 25kAIC at 240V, it includes load side lugs and is HACR rated.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | LM3600-R |
| Series | LM |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Pow-R-Line 4 (PRL4) Panelboards, Westinghouse Switchboards |
| Wire Gauge | (2) 250-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| 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 | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1, CSA |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Product FAQs
7 answersWhich panelboards and switchboards accept the LM3600 circuit breaker?
The LM3600 is designed for installation in Eaton Pow-R-Line 4 (PRL4) panelboards and legacy Westinghouse switchboards.
What is the difference between the frame size and trip rating on the LM3600?
The LM3600 utilizes an 800-amp L-Frame but is equipped with a 600-amp trip unit. The physical footprint matches other 800-amp Series C breakers, but the breaker is calibrated to trip when the current exceeds the 600-amp threshold.
How does the trip unit operate on the LM3600?
This breaker is equipped with a thermal-magnetic trip unit that provides a fixed thermal response for long-time overload protection and an adjustable magnetic response for instantaneous short-circuit protection.
What are the standard lug wire size requirements for the LM3600?
The factory-installed lugs accommodate two aluminum or copper conductors per phase, accepting wire sizes from 250 kcmil up to 500 kcmil.
Are Eaton, Cutler-Hammer, and Westinghouse LM3600 breakers interchangeable?
Yes. Eaton acquired the Westinghouse electrical distribution division and continued producing the Series C L-Frame breakers. The LM3600 catalog number remains the same and is fully interchangeable across the Westinghouse, Cutler-Hammer, and Eaton brands.
Does the LM3600 support field-installable internal accessories?
Yes, as part of the Eaton Series C L-Frame family, this breaker supports field-installable internal accessories such as shunt trips, auxiliary contacts, and alarm switches.
How is the LM3600 breaker mounted within a panel?
The LM3600 is a unit-mount circuit breaker. It bolts directly to the backpan or chassis of the enclosure and requires dedicated mounting hardware to secure it in place.
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