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Siemens JXD63B250H Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Siemens
JXD63B250H
Molded Case Circuit Breaker
Brand
Siemens
SKU
JXD63B250H
Quantity
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Siemens JXD63B250H - 250A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for industrial power systems, the Siemens JXD63B250H is a 3-pole, 250A molded case circuit breaker providing long-time and instantaneous (LI) protection. This unit-mount MCCB installs into Siemens Sentron panelboards (P4, P5, S4, S5) and switchboards. As a JD frame breaker, it offers a robust solution for facility upgrades. Rated 35kAIC at 480V, it features a fixed thermal and adjustable magnetic trip. It is 100% rated, HACR certified, and reverse feed capable. Lugs are not included.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JXD63B250H |
| Series | JXD6 |
| Amperage | 250A |
| 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 | JD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P4, P5, S4, S5), 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, Padlock Attachment, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, 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
8 answersDoes the Siemens JXD63B250H come with lugs installed?
No, this circuit breaker is supplied without lugs. You must purchase compatible lug kits separately, such as the TA2J6500 for aluminum wire or the TC2J6500 for copper wire.
What wire sizes are compatible with the standard lug kits for this JD frame breaker?
The TA2J6500 aluminum lug kit and TC2J6500 copper lug kit both accept wire sizes ranging from 3/0 AWG to 500 kcmil.
How is the trip unit adjusted on the JXD63B250H?
This breaker features a thermal-magnetic trip unit with a fixed thermal setting and an adjustable magnetic setting. The instantaneous magnetic trip can be adjusted using the dial on the front of the breaker to meet specific coordination requirements.
Can the JXD63B250H be used to replace older JD6 frame circuit breakers?
Yes, the JXD6 series is a direct replacement for legacy I-T-E and Siemens JD6 series breakers, such as the JD63B250. They share the same physical dimensions and mounting requirements.
Is the Siemens JXD63B250H suitable for reverse-feed applications?
Yes, this breaker is reverse-feed capable. This allows it to be wired with the line connections on either the top or bottom terminals without affecting the tripping characteristics.
Can this molded case circuit breaker be used in DC power systems?
Yes, in addition to its AC ratings, the JXD63B250H is rated for use in direct current applications up to 500VDC.
Which panelboards and enclosures are compatible with the JXD63B250H?
This unit-mount breaker is designed for installation in Siemens Sentron panelboards, including P4, P5, S4, and S5 models, as well as compatible Siemens switchboards and standalone enclosures.
What does the H suffix in the JXD63B250H catalog number indicate?
The H suffix indicates that this is a 100 percent rated circuit breaker. This allows it to carry its full 250A continuous current rating when installed in an appropriately sized and ventilated enclosure, rather than being limited to the standard 80 percent continuous rating.
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