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Siemens JL3B175 Molded Case Circuit Breaker
- 175A
- 3 Pole
- Bolt-On
Siemens
JL3B175
Molded Case Circuit Breaker
Brand
Siemens
SKU
JL3B175
Quantity
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Siemens JL3B175 - 175A 3 Pole Molded Case Circuit Breaker
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Description
The JL3B175 is a 3-pole, 175A molded case circuit breaker designed by Siemens for demanding commercial environments. It utilizes a thermal magnetic trip unit with adjustable magnetic settings, providing reliable long-time and instantaneous protection. Engineered for bolt-on mounting, this breaker fits into Siemens P4 and P5 panelboards, switchboards, and motor control centers. It is also fully compatible with legacy ITE FC-1 panelboards. This HACR-rated breaker delivers 35kAIC at 480VAC.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JL3B175-R |
| Series | JL |
| Amperage | 175A |
| 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 answersWhat enclosures are compatible with the JL3B175 breaker?
The JL3B175 is designed for installation in Siemens P4 and P5 panelboards, switchboards, and motor control centers. It is also fully backwards compatible with legacy ITE FC-1 panelboards, ensuring a direct fit for aging infrastructure.
Are terminal lugs included with the JL3B175?
No, terminal lugs are not included with this breaker. You will need to source compatible J-frame lug kits separately, such as the TA2J6500 for aluminum or copper wire, or the TC2J6500 for copper-only applications.
How is the JL3B175 mounted into a panelboard?
This is a bolt-on molded case circuit breaker. It requires the appropriate mounting strap or hardware kit to securely bolt the line-side terminals to the busbars of your specific Siemens or ITE enclosure.
Can the JL3B175 be used in DC electrical systems?
Yes, this breaker is rated for DC applications up to 250VDC with an interrupting capacity of 30kA. This makes it suitable for industrial DC control panels, battery systems, and other specialized direct current circuits.
Are the trip settings on the JL3B175 adjustable?
The JL3B175 features a thermal-magnetic trip unit with a fixed thermal element for overload protection and an adjustable magnetic element. This allows electricians to fine-tune the instantaneous short-circuit response to coordinate with other devices in the system.
Is the Siemens JL3B175 a direct replacement for older ITE models?
Yes, this breaker is a direct replacement for legacy ITE JL-frame breakers with the same catalog number. It maintains the original physical dimensions and mounting configuration, eliminating the need for retrofit adapter kits.
Does the JL3B175 provide ground fault protection?
No, the JL3B175 is a standard thermal-magnetic breaker equipped with long-time and instantaneous (LI) trip functions. It does not include built-in equipment ground fault (LSIG) or personnel ground fault (GFCI) protection.
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