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Siemens JL3B125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
Siemens
JL3B125
Molded Case Circuit Breaker
Brand
Siemens
SKU
JL3B125
Quantity
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Siemens JL3B125 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
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Description
Designed for commercial and industrial power distribution, this 125A, 3-pole molded case circuit breaker offers dependable long-time and instantaneous protection. It features an interchangeable trip unit and handles fault currents up to 35kAIC at 480VAC. The breaker bolts securely into Siemens P4 and P5 panelboards, switchboards, and motor control centers. It also provides a replacement solution for older ITE FC-1 systems and serves as a substitute for JD63B125 or JXD63B125 frames.Specifications
| Brand | Siemens |
|---|---|
| Series | JL |
| Amperage | 125A |
| 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 | Interchangeable Trip Unit |
Product FAQs
4 answersWhich panelboards are compatible with the Siemens JL3B125?
This J-frame 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.
Are the trip settings adjustable on the JL3B125?
Yes, this thermal-magnetic breaker features an adjustable magnetic trip for short-circuit protection, while the thermal element for long-time overload protection is fixed.
Is the JL3B125 suitable for direct current systems?
Yes, this breaker is rated for use in DC applications up to 250VDC, providing an interrupting capacity of 30kAIC at that voltage.
Can the Siemens JL3B125 replace older ITE breakers?
Yes, Siemens acquired ITE and continued manufacturing this series. The JL3B125 can directly replace older ITE breakers with the same catalog number in existing FC-1 panels and switchboards.
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