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Siemens JXD63B400H Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Siemens
JXD63B400H
Molded Case Circuit Breaker
Brand
Siemens
SKU
JXD63B400H
Quantity
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Siemens JXD63B400H - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens JXD63B400H - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | JXD63B400H |
| Series | JXD6 |
| Amperage | 400A |
| 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 |
| 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, Padlock Attachment |
|---|---|
| Accessories | Lugs Not Included |
| Standards | IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, 100% Rated |
Quantity
Siemens JXD63B400H - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Series | JXD6 |
| Amperage | 400A |
| 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 |
| 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, Padlock Attachment |
|---|---|
| Accessories | Lugs Not Included |
| Standards | IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, 100% Rated |
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Description
Designed for continuous efficiency, the Siemens JXD63B400H is a 100% rated, 3-pole, 400A MCCB. It provides robust LI protection for critical commercial and industrial circuits. This unit-mount breaker is engineered for Siemens panelboards, switchboards, and motor control centers. The 100% rating allows it to carry its full 400A load continuously without derating. Capable of handling 35kAIC at 480VAC, it features an adjustable magnetic trip unit. It is HACR rated and reverse feed capable.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JXD63B400H |
| Series | JXD6 |
| Amperage | 400A |
| 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 |
| 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, Padlock Attachment |
|---|---|
| Accessories | Lugs Not Included |
| Standards | IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, 100% Rated |
Product FAQs
9 answersWhich panelboards are compatible with the Siemens JXD63B400H circuit breaker?
This JD-frame breaker is designed for unit mounting in Siemens Sentron panelboards, including Type P4, P5, S4, and S5, as well as compatible switchboards and motor control centers.
Is the Siemens JXD63B400H a 100 percent rated circuit breaker?
Yes, the H suffix in the catalog number indicates that this breaker is 100 percent rated. This allows it to carry its full 400A continuous load without the standard 80 percent derating requirement, provided it is installed in an appropriately sized and ventilated enclosure.
Can I adjust the trip settings on the JXD63B400H?
This breaker features a thermal-magnetic trip unit with a fixed thermal element for long-time overcurrent protection and an adjustable magnetic element for instantaneous short-circuit protection.
What field-installable accessories are compatible with this JD-frame breaker?
The JXD63B400H supports standard Siemens Sentron JD-frame internal accessories, including shunt trips, auxiliary switches, alarm switches, and undervoltage releases.
What wire size is accepted by the standard lugs for the JXD63B400H?
When equipped with standard Siemens JD-frame mechanical lugs, the terminals accept copper or aluminum wire ranging from 3/0 AWG to 500 kcmil. Always verify your specific lug kit catalog number for exact wire range and torque specifications.
Can the JXD63B400H be used in DC power applications?
Yes, in addition to its AC ratings, this thermal-magnetic breaker is rated for use in 500VDC systems, providing a 25kAIC interrupting capacity for direct current applications.
Can I use the JXD63B400H to replace an older JD63B400 or HJD63B400?
The JXD63B400H shares the same physical JD-frame dimensions and bolt-on mounting configuration as standard JD6 and high-interrupting HJD6 breakers. However, you must verify that its 35kAIC at 480VAC interrupting rating and 100 percent continuous current rating meet the requirements of your specific application before substituting.
Does this breaker support reverse feeding?
Yes, the Siemens JXD63B400H is reverse feed capable, allowing it to be wired with the line connections on either the top or bottom terminals depending on your enclosure layout.
Is the JXD63B400H suitable for HVAC applications?
Yes, this breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment that requires dedicated overcurrent protection.
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