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Siemens JXD63B350 Molded Case Circuit Breaker
- 350A
- 3 Pole
- Unit Mount
Siemens
JXD63B350
Molded Case Circuit Breaker
Brand
Siemens
SKU
JXD63B350
Quantity
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Siemens JXD63B350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens JXD63B350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | JXD63B350 |
| Series | JXD6 |
| 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 |
| Frame Type | JXD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type P4, P5, S4, S5), Switchboards, Motor Control Centers |
| 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, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Quantity
Siemens JXD63B350 - 350A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | JXD63B350-R |
| Series | JXD6 |
| 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 |
| Frame Type | JXD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type P4, P5, S4, S5), Switchboards, Motor Control Centers |
| 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, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
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Description
Engineered for heavy-duty applications, the Siemens JXD63B350 is a 3-pole, 350A molded case circuit breaker from the Sentron family. It delivers reliable long-time and instantaneous (LI) protection for commercial and industrial electrical systems. This unit-mount JD frame breaker integrates seamlessly into Siemens P4, P5, S4, and S5 panelboards, switchboards, and motor control centers. Rated at 35kAIC at 480VAC, it features a non-interchangeable trip unit and is reverse feed capable.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JXD63B350 |
| Series | JXD6 |
| 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 |
| Frame Type | JXD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type P4, P5, S4, S5), Switchboards, Motor Control Centers |
| 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, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
5 answersWhat is the difference between the Siemens JXD63B350 and JD63B350?
The JXD63B350 features a non-interchangeable trip unit that is factory assembled and sealed. The JD63B350 utilizes an interchangeable trip unit, allowing the trip mechanism to be replaced without changing the entire breaker frame. Both models share the exact same footprint and panel compatibility.
What wire size does the standard lug kit for the JXD63B350 accept?
The standard lug kit for this JD frame breaker is the TA2J6500. These lugs accept either copper or aluminum conductors ranging from 3/0 AWG to 500 kcmil.
What is the adjustable magnetic trip range on the JXD63B350?
The instantaneous magnetic trip on this 350A breaker can be adjusted between 2000A and 4000A. This adjustability allows installers to tune the short-circuit response to prevent nuisance tripping during high inrush currents.
Which panelboards accept the Siemens JXD63B350 breaker?
This unit mount breaker is designed to install into Siemens Sentron series panelboards, specifically types P4, P5, S4, and S5. It is also fully compatible with Siemens switchboards and motor control centers designed for JD frame breakers.
Can the JXD63B350 be reverse fed?
Yes. Because the JXD63B350 is built with a factory-sealed, non-interchangeable trip unit, it is approved for reverse-feed applications according to UL 489 standards.
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