Siemens / ITE J2B175 Molded Case Circuit Breaker
- 175A
- 2 Pole
- Bolt-On
Quantity
Siemens / ITE J2B175 - 175A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Restoring power to aging facilities requires exact-fit components like the Siemens J2B175. This 2-pole, 175A molded case circuit breaker provides dependable thermal-magnetic protection for commercial applications. Engineered as a bolt-on solution, it mounts securely into vintage ITE FC-1 or S-Series switchboards. It serves as an ideal substitute for the JXD62B175, ensuring compatibility with existing hardware. With a 25kAIC rating at 240VAC, this J-Frame breaker delivers reliable performance.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | J2B175-R |
| Series | J |
| Amperage | 175A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | J |
|---|---|
| Terminal Type | Lugs |
| For Use With | ITE/Siemens Panelboards (FC-1, S-Series), Switchboards |
| Wire Gauge | 4 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 4 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 | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5.1, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40°C |
| Construction Features | Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
6 answersWhat panelboards accept the J2B175 circuit breaker?
This legacy J-frame breaker is designed to install into ITE and Siemens FC-1 and S-Series panelboards, as well as compatible switchboards.
What wire sizes and materials are compatible with the lugs on this breaker?
The standard lugs on the J2B175 accept wire gauges ranging from 4 AWG up to 300 kcmil. They are dual-rated for use with both copper (Cu) and aluminum (Al) conductors.
Can the J2B175 be used in direct current (DC) systems?
Yes, in addition to its AC ratings, this breaker is rated for use in DC applications up to 250VDC, where it provides an interrupting capacity of 10kA.
Is the trip unit on this breaker adjustable?
The J2B175 features a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element, allowing you to fine-tune the instantaneous short-circuit trip threshold.
How is this breaker secured inside the panelboard?
It utilizes a bolt-on connection. The breaker bolts directly to the panelboard bus, ensuring a secure, high-contact-pressure connection suitable for 175-amp commercial and industrial loads.
What does the LI trip function code mean for this breaker?
The LI designation indicates that the breaker provides Long-Time (L) and Instantaneous (I) protection. The long-time function protects against sustained overcurrents, while the instantaneous function clears severe short circuits immediately.
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.
Reviews
Review summary
Customers rate this product 4.5 out of 5 based on 2 reviews.
- CSCHARLES S.Verified BuyerRated 5 out of 5 stars10/15/26SALES REP
SQD IS A GREAT PRODUCT
- MCMARK C.Verified BuyerReviewingITE/Siemens J20M Control RelayI recommend this productRated 4 out of 5 stars2/4/26it control relay but it was just the coil for the relay. do you have a J20A40 CONTACTS?
it control relay but it was just the coil for the relay. do you have a J20A40 CONTACTS?