Siemens LJ63B600 Molded Case Circuit Breaker
- 600A
- 3 Pole
- Unit Mount
Quantity
Siemens LJ63B600 - 600A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built for heavy-duty commercial applications, the Siemens LJ63B600 delivers 600A of thermal-magnetic protection across three poles. This 600VAC molded case circuit breaker provides a 35kA interrupting rating at 480V, utilizing a fixed thermal and adjustable magnetic trip unit for precise LI protection. Designed as a unit-mount solution, it integrates seamlessly into Siemens P4 and P5 panelboards. This legacy L-Frame breaker is often replaced by the LXD63B600 or LD63B600 series.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LJ63B600-R |
| Series | LJ |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P4, P5 Panelboards, Switchboards |
| Wire Gauge | (2) 3/0 AWG-500 kcmil (Cu) or (2) 4/0 AWG-500 kcmil (Al) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
6 answersWhich panelboards are compatible with the Siemens LJ63B600 circuit breaker?
The LJ63B600 is designed for use in Siemens P4 and P5 panelboards, as well as Siemens switchboards.
What wire sizes are accepted by the standard lugs on the LJ63B600?
The included lugs accept two 3/0 AWG to 500 kcmil copper wires, or two 4/0 AWG to 500 kcmil aluminum wires per phase.
What is the magnetic trip adjustment range for the LJ63B600?
The adjustable magnetic trip on this 600A L-Frame breaker can be set between 3000A and 6000A for short-circuit protection.
Is the Siemens LJ63B600 the same as the ITE LJ63B600?
Yes, Siemens acquired ITE and continued manufacturing the LJ series under the Siemens brand. The LJ63B600 and ITE LJ63B600 are the exact same L-Frame circuit breaker.
What is the alternate catalog number for the LJ63B600?
This 600A L-Frame breaker is also listed under the alternate part number LJ63-B600.
Are lug terminals included with the LJ63B600?
Yes, this breaker is supplied with standard load side lug terminals for your wire connections.
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