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Siemens JD63B350L Molded Case Circuit Breaker
- 350A
- 3 Pole
- Unit Mount
Siemens
JD63B350L
Molded Case Circuit Breaker
Brand
Siemens
SKU
JD63B350L
Quantity
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Siemens JD63B350L - 350A 3 Pole Molded Case Circuit Breaker
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Description
Built for demanding industrial environments, the Siemens JD63B350L is a 3-pole, 350A MCCB within the Sentron JD frame lineup. It delivers dependable long-time and instantaneous (LI) overcurrent protection. Designed for unit mounting, this breaker integrates seamlessly into Siemens Sentron panelboards and switchboards. A key feature of the L suffix model is the inclusion of factory-installed TA2J6500 lugs. Delivering 65kAIC at 240VAC, it handles high fault currents safely.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JD63B350L |
| Series | JD6 |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (1-2) 3/0 AWG - 500 kcmil (Cu) or (1-2) 4/0 AWG - 500 kcmil (Al) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG (Cu), 4/0 AWG (Al) |
| 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, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Line and Load Lugs (TA2J6500) Installed |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Product FAQs
7 answersWhat is the difference between the Siemens JD63B350 and the JD63B350L?
The L suffix in the JD63B350L catalog number indicates that the breaker comes factory-equipped with line and load side lug terminals. The base JD63B350 model typically requires lugs to be purchased separately.
Are the line and load lugs included with this breaker?
Yes, the JD63B350L comes complete with factory-installed line and load side lug terminals.
How many conductors can the included lugs accept per phase?
The standard lugs on the JD63B350L can accept one or two conductors per phase. They accommodate 3/0 AWG to 500 kcmil copper wire, or 4/0 AWG to 500 kcmil aluminum wire.
Is the trip unit on the JD63B350L adjustable?
Yes, this breaker features a thermal-magnetic trip unit with a fixed thermal setting and an adjustable magnetic (instantaneous) trip setting.
Can the trip unit on this breaker be swapped out later?
Yes, the JD63B350L features an interchangeable trip unit design, allowing for modifications or replacements without replacing the entire breaker frame.
What types of enclosures or equipment is the JD63B350L designed for?
This unit-mount JD frame breaker is designed for use in Siemens Sentron panelboards, switchboards, and motor control centers.
Does the JD63B350L provide ground fault protection?
No, this is a standard thermal-magnetic breaker with Long-Time and Instantaneous (LI) trip functions. It does not include integral equipment ground fault or personnel ground fault protection.
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