Free Shipping Over $99
Siemens JL3B250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Bolt-On
Siemens
JL3B250
Molded Case Circuit Breaker
Brand
Siemens
SKU
JL3B250
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens JL3B250 - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
300A 3 Pole Molded Case Circuit Breaker
300A 3 Pole Molded Case Circuit Breaker
350A 3 Pole Molded Case Circuit Breaker
Description
A drop-in replacement for older distribution systems, the Siemens JL3B250 is a 250-amp, 3-pole molded case circuit breaker. It utilizes thermal-magnetic trip technology to deliver long-time and instantaneous (LI) protection for commercial environments. Designed for bolt-on installation, this J-Frame breaker fits into Siemens P4 and P5 panelboards, motor control centers, and legacy ITE FC-1 panels. It is replaced by the JD63B250 model.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JL3B250-R |
| Series | JL |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 30kA @ 250VDC |
| Frame Type | JL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P4, P5 Panelboards, Switchboards, Motor Control Centers, Legacy ITE FC-1 Panelboards |
| Wire Gauge | 3/0 AWG - 500 kcmil |
| 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, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
5 answersWhich panelboards and enclosures accept the Siemens JL3B250?
The JL3B250 is a bolt-on J-frame breaker compatible with Siemens P4 and P5 panelboards, switchboards, and motor control centers. It is also backward compatible with legacy ITE FC-1 panelboards.
Is there a modern replacement for the legacy JL3B250?
Yes, the Siemens JD63B250 is the direct modern replacement for the legacy JL3B250 J-frame circuit breaker.
What wire gauge range does the JL3B250 support?
When fitted with standard lugs, the breaker terminals accommodate wire sizes from 3/0 AWG up to 500 kcmil.
Is the JL3B250 suitable for direct current (DC) applications?
Yes, in addition to its standard AC ratings, this breaker is rated for use in 250VDC systems with a 30kAIC interrupting capacity.
How is the trip unit configured on the JL3B250?
It utilizes a thermal magnetic trip unit featuring a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
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.