Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Siemens JXD23B350 Molded Case Circuit Breaker
- 350A
- 3 Pole
- Bolt-On
Siemens
JXD23B350
Molded Case Circuit Breaker
Brand
Siemens
SKU
JXD23B350
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens JXD23B350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens JXD23B350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Series | JXD2 |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| 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 |
|---|---|
| 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 |
Quantity
Siemens JXD23B350 - 350A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Series | JXD2 |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| 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 |
|---|---|
| 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 |
Similar Items
300A 3 Pole Molded Case Circuit Breaker
250A 3 Pole Molded Case Circuit Breaker
225A 3 Pole Molded Case Circuit Breaker
Description
Built for demanding electrical systems, this 350-amp molded case breaker offers robust long-time and instantaneous trip functions. The reverse-feed capable design ensures flexible installation across various commercial environments. It integrates into Siemens Sentron panelboards, motor control centers, and SB switchboards. For modern upgrades, this unit is eventually replaced by the 3VA series using a retrofit kit. With a 65kAIC rating at 240V, it safely clears high-level faults.Specifications
| Brand | Siemens |
|---|---|
| Series | JXD2 |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| 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 |
|---|---|
| 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 |
Product FAQs
6 answersWhat types of distribution equipment are compatible with the JXD23B350?
This JD frame breaker is engineered for installation in Siemens Sentron Panelboards, SB Switchboards, and Motor Control Centers.
Can the Siemens JXD23B350 replace older I-T-E circuit breakers?
Yes. Because Siemens acquired I-T-E, modern Sentron JD frame breakers like the JXD23B350 are frequently used as direct replacements for legacy I-T-E JD frame breakers in existing electrical systems.
Which lug kit is required for terminating wire to this breaker?
For standard 3/0 AWG to 500 kcmil copper or aluminum conductors, the Siemens TA2J6500 aluminum lug kit is commonly used with this 350A JD frame breaker.
How is the magnetic trip adjusted on the JXD23B350?
The thermal-magnetic trip unit features a fixed thermal element for long-time protection, while the instantaneous magnetic trip can be adjusted using the dials located on the front face of the breaker.
What do the LI trip functions indicate on this Sentron breaker?
The LI designation means the breaker provides Long-Time (L) protection against sustained overloads and Instantaneous (I) protection to quickly clear severe short-circuit faults.
Does this breaker require a specific mounting hardware kit?
As a bolt-on breaker, it mounts directly to the bus bars of compatible Sentron panels and switchboards. Specific mounting strap kits or connector kits may be required depending on the exact panelboard chassis.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.