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Siemens JXD22B250 Molded Case Circuit Breaker
- 250A
- 2 Pole
- Bolt-On
Siemens
JXD22B250
Molded Case Circuit Breaker
Brand
Siemens
SKU
JXD22B250
Quantity
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Siemens JXD22B250 - 250A 2 Pole Molded Case Circuit Breaker
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Description
Built for industrial power distribution, the Siemens JXD22B250 is a 2-pole, 250A molded case circuit breaker. It utilizes proven thermal-magnetic trip technology to safeguard critical commercial circuits. This JD-frame unit mounts into Siemens Sentron panelboards, SB switchboards, and motor control centers. It is frequently used to maintain existing infrastructure before upgrading to the 3VA series. Delivering 65kAIC at 240VAC, it features a trip-free mechanism. Lugs are sold separately.Specifications
| Brand | Siemens |
|---|---|
| Series | JXD2 |
| Amperage | 250A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 30kA @ 250VDC |
| Frame Type | JXD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Sentron Panelboards, SB Switchboards, Motor Control Centers |
| Wire Gauge | 3/0 AWG - 500 kcmil (Cu/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, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Terminal Shields |
|---|---|
| Accessories | Lugs Not Included (Requires TA2J6500) |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, 2-Pole in 3-Pole Housing |
Product FAQs
7 answersWhat enclosures and panelboards are compatible with the JXD22B250?
This JD frame breaker is designed to mount in Siemens Sentron panelboards, SB switchboards, and motor control centers.
Does the JXD22B250 come with lugs installed?
No, this breaker is typically supplied without lugs. You will need to purchase a compatible lug kit, such as the TA2J6500, which accepts 3/0 AWG to 500 kcmil copper or aluminum wire.
What does the adjustable magnetic trip function do on this breaker?
The adjustable magnetic trip allows you to set the instantaneous short circuit trip threshold to coordinate with other protective devices in your system, while the thermal overload protection remains fixed at 250 amps.
Can the JXD22B250 replace older legacy JD frame breakers?
Yes, this breaker shares the same physical dimensions and mounting footprint as legacy I-T-E and Siemens JD frame breakers, making it a direct replacement for maintaining existing infrastructure.
Is the JXD22B250 rated for DC applications?
Yes, in addition to its 240VAC rating, this breaker is rated for 250VDC with an interrupting capacity of 30kAIC, making it suitable for specific DC power distribution systems.
How does the JXD22B250 connect to the busbar?
This is a bolt-on circuit breaker. It bolts directly to the busbar in compatible panelboards and switchboards, providing a secure connection that resists loosening from thermal cycling and vibration.
Is the trip unit on the JXD22B250 interchangeable?
No, this specific breaker features a non-interchangeable thermal magnetic trip unit. If the trip unit fails or requires a different rating, the entire breaker frame must be replaced.
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