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Siemens JXD22B350 Molded Case Circuit Breaker
- 350A
- 2 Pole
- Bolt-On
Siemens
JXD22B350
Molded Case Circuit Breaker
Brand
Siemens
SKU
JXD22B350
Quantity
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Siemens JXD22B350 - 350A 2 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens JXD22B350 - 350A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | JXD22B350 |
| Series | JXD2 |
| Amperage | 350A |
| 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, IEC 60947-2, UL 489 |
| Approval | CE, 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 |
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Siemens JXD22B350 - 350A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | JXD22B350-R |
| Series | JXD2 |
| Amperage | 350A |
| 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, IEC 60947-2, UL 489 |
| Approval | CE, 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 |
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Description
Serving commercial and industrial power systems, the Siemens JXD22B350 is a heavy-duty 2-pole, 350A molded case circuit breaker. As part of the Sentron JD frame series, it utilizes proven thermal-magnetic technology to deliver precise long-time and instantaneous protection against electrical faults. This bolt-on MCCB mounts into Siemens Sentron panelboards, SB switchboards, and motor control centers. Boasting an interrupting rating of 65kAIC at 240VAC, it includes a trip-free mechanism.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JXD22B350 |
| Series | JXD2 |
| Amperage | 350A |
| 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, IEC 60947-2, UL 489 |
| Approval | CE, 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
8 answersWhat equipment is compatible with the JXD22B350 circuit breaker?
The JXD22B350 is a JD frame breaker designed to mount in Siemens Sentron panelboards, SB switchboards, and motor control centers.
Which lug kits are compatible with the JXD22B350?
This breaker requires JD frame lug kits for wire termination. Common options include the TA2J6500 for aluminum or copper wire, and the TC2J6500 for copper wire only. Both accept 3/0 AWG to 500 kcmil conductors.
How is the magnetic trip adjusted on the JXD22B350?
The magnetic trip is adjusted using a dial on the face of the breaker. This allows electricians to customize the instantaneous trip threshold to coordinate with downstream devices and prevent nuisance tripping from motor inrush currents.
Can the JXD22B350 be reverse fed?
Yes. Because the JXD22B350 is built with a non-interchangeable trip unit, it meets UL 489 requirements for reverse feeding, allowing power to be supplied to either the top or bottom terminals.
How should the JXD22B350 be wired for 250VDC systems?
When applying this 2-pole breaker on 250VDC systems, one pole must be wired on each leg of the supply circuit to ensure proper voltage distribution across the breaker contacts.
What is the difference between the JXD22B350 and a standard JD6 breaker?
The JXD22B350 features a factory-sealed, non-interchangeable trip unit. Standard JD6 breakers, such as the JD62B350, have interchangeable trip units that allow the trip element to be swapped out without replacing the entire breaker frame.
Why is proper lug torque critical when installing the JXD22B350?
Under-torqued lugs can cause high contact resistance, leading to voltage drop, overheating, and premature breaker failure. Always apply the exact torque value specified on the breaker or lug kit label using a calibrated torque wrench.
Is the JXD22B350 suitable for HVAC applications?
Yes, the JXD22B350 is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires group motor protection.
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