Siemens LL3F600 Molded Case Circuit Breaker
- 600A
- 3 Pole
- Unit Mount
Quantity
Siemens LL3F600 - 600A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built for demanding industrial environments, the Siemens LL3F600 is a 3-pole, 600A molded case circuit breaker frame. It utilizes proven thermal-magnetic trip technology with fixed thermal and adjustable magnetic settings to protect heavy commercial loads. This unit mount L-Frame breaker installs into compatible Siemens switchboards and enclosures. Rated at 35kAIC at 480VAC, it is supplied without lugs and is officially replaced by the newer LXD63F600 model.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LL3F600 |
| 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 |
| 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 | Lugs Not Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip |
Product FAQs
7 answersIs the Siemens LL3F600 still in active production?
The LL3F600 is a legacy L-Frame breaker. It has been officially replaced by the newer LXD63F600 model for 600A applications.
Why is the LL3F600 described as a 'frame only' if it includes a trip unit?
In Siemens legacy nomenclature, a 'frame only' designation indicates that the breaker is supplied without terminal lugs. The LL3F600 still includes the complete thermal-magnetic trip unit with long-time and instantaneous (LI) protection.
Does the LL3F600 come with terminal lugs installed?
No, this is a frame-only unit and is supplied without lugs. Compatible L-Frame lugs must be sourced separately based on your specific wire size and material requirements.
What types of panels are compatible with the LL3F600?
This unit-mount breaker is designed specifically for use with compatible Siemens Sentron panelboards, switchboards, and standalone enclosures.
How does the adjustable magnetic trip function benefit my installation?
The adjustable magnetic setting allows you to fine-tune the instantaneous short-circuit trip threshold. This helps coordinate the breaker with downstream devices and prevents nuisance tripping from high inrush currents, such as those generated by large motors.
Can I mount the LL3F600 on a standard DIN rail?
No, the LL3F600 is a bolt-on, unit-mount circuit breaker. It must be bolted directly to the bus or mounting pan in Sentron panelboards and switchboards, and is too large for DIN rail mounting.
Can the LL3F600 be used to protect commercial HVAC equipment?
Yes, this breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment that requires this specific protection standard.
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