Siemens LL3B600 Molded Case Circuit Breaker
- 600A
- 3 Pole
- Unit Mount
Quantity
Siemens LL3B600 - 600A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered for heavy-duty applications, the Siemens LL3B600 is a 3-pole, 600A molded case circuit breaker from the legacy Sentron L-Frame family. It features fixed thermal and adjustable magnetic trip settings to handle demanding commercial and industrial loads. This unit mount breaker installs into compatible Siemens enclosures, switchboards, and panelboards. Rated at 35kAIC at 480VAC, it comes complete with load side lugs and is replaced by the newer LXD63B600 model.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LL3B600-R |
| Series | LL |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | LL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, Switchboards, Enclosures |
| Wire Gauge | (2) #1 AWG-500 kcmil Cu/Al |
| Max Wire | 500 kcmil |
| Min Wire | #1 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 | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip |
Product FAQs
6 answersWhat equipment is compatible with the Siemens LL3B600 circuit breaker?
This L-frame breaker is designed for installation in Siemens Sentron panelboards, switchboards, and compatible standalone enclosures.
What wire sizes are accepted by the LL3B600 lugs?
The included lugs accommodate two conductors per phase, accepting #1 AWG to 500 kcmil copper or aluminum wire.
Are the trip settings adjustable on this breaker?
Yes, the thermal-magnetic trip unit features a fixed thermal element for overload protection and an adjustable magnetic element for short-circuit protection.
What does the LI trip function code indicate on this breaker?
The LI code specifies that the breaker provides Long-Time (thermal) protection for overloads and Instantaneous (magnetic) protection for short circuits.
How is the LL3B600 mounted in a panel?
It utilizes a unit-mount, bolt-on connection, meaning it must be bolted directly to the busbars or mounting hardware within the panelboard or switchboard.
Is the LL3B600 part of a legacy product line?
Yes, the LL-frame is a legacy molded case circuit breaker series. It was originally manufactured under the I-T-E and Gould brands before transitioning to Siemens.
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