Free Shipping Over $99
Siemens JL3B150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Siemens
JL3B150
Molded Case Circuit Breaker
Brand
Siemens
SKU
JL3B150
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens JL3B150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
125A 3 Pole Molded Case Circuit Breaker
200A 3 Pole Molded Case Circuit Breaker
225A 3 Pole Molded Case Circuit Breaker
Description
Designed for commercial facilities, the Siemens JL3B150 is a 150A, 3-pole molded case circuit breaker. It offers fixed thermal and adjustable magnetic trip settings for precise LI protection. This bolt-on breaker integrates into Siemens P4 and P5 panelboards, MCCs, and switchboards. It is also an exact fit for legacy ITE FC-1 systems. Operating at up to 600VAC, it provides a 35kAIC rating at 480V. The unit is HACR rated and features a trip-free mechanism.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JL3B150-R |
| Series | JL |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 30kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P4, P5 Panelboards, Switchboards, Motor Control Centers, Legacy ITE FC-1 Panelboards |
| 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 | HACR Rated, Interchangeable Trip Unit, Trip-Free Mechanism |
Product FAQs
7 answersWhich panelboards are compatible with the Siemens JL3B150 circuit breaker?
This breaker is designed for use in Siemens P4 and P5 panelboards, switchboards, and motor control centers. It is also backwards compatible with legacy ITE FC-1 panelboards.
Can I use the JL3B150 in a standard residential load center?
No, this is a J-Frame molded case circuit breaker designed for commercial and industrial distribution equipment. It will not fit in standard residential plug-on or bolt-on load centers.
Does the JL3B150 feature adjustable trip settings?
Yes, it features a thermal magnetic trip unit with fixed thermal protection for overloads and an adjustable magnetic trip for short-circuit protection, allowing for better coordination in your electrical system.
What does the LI designation mean on the JL3B150 trip unit?
The LI code indicates that the breaker provides Long-Time (L) and Instantaneous (I) trip functions. Long-Time protects against sustained overloads, while Instantaneous protects against sudden short circuits.
Can the Siemens JL3B150 replace older ITE branded breakers?
Yes, Siemens acquired ITE, and the JL3B150 is the direct replacement for the legacy ITE JL3B150. They share the same physical dimensions and mounting configurations.
How is the JL3B150 installed into the panelboard?
It is a bolt-on circuit breaker, meaning it secures directly to the panel busbars using bolted connections rather than snapping into place. This provides a secure, high-capacity connection suitable for commercial and industrial environments.
Is the JL3B150 rated for direct current (DC) applications?
Yes, in addition to its standard AC ratings, this breaker is rated for up to 250VDC with an interrupting capacity of 30kA, making it suitable for specific industrial DC applications.
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.