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Eaton / Cutler-Hammer JDB3175 Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
JDB3175
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
JDB3175
Quantity
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Eaton / Cutler-Hammer JDB3175 - 175A 3 Pole Molded Case Circuit Breaker
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Quantity
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Description
Delivering 175A of continuous current capacity, this Eaton JDB3175 molded case circuit breaker is built for commercial and industrial applications. The three-pole, J-Frame device mounts easily into Series C motor control centers, switchboards, and standard enclosures. As a drop-in substitute for the older JD3175, it simplifies facility upgrades and maintenance. It comes equipped with standard line and load lugs, providing fixed thermal and magnetic (LI) protection with a 65kAIC rating at 240V.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | JDB3175 |
| Series | JDB |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | J |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers, Enclosures |
| Wire Gauge | 8 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Handle Mechanism |
|---|---|
| Accessories | Line and Load Lugs Included (TA250KB) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
7 answersWhat panels and enclosures are compatible with the JDB3175?
This breaker is designed for installation in Eaton Series C panelboards, switchboards, motor control centers, and standalone enclosures configured for J-Frame circuit breakers.
What does the LI trip function mean for this breaker?
The LI designation indicates that the thermal magnetic trip unit provides Long-Time overload protection and Instantaneous short circuit protection. Both the thermal and magnetic trip settings are fixed on this model.
Can this Eaton J-Frame breaker be used in direct current systems?
Yes, it is rated for DC applications up to 250VDC, providing an interrupting capacity of 10kA.
What wire sizes and materials do the standard lugs accept?
The included lugs are compatible with 8 AWG to 350 kcmil wire and can accommodate either aluminum or copper conductors.
How is this circuit breaker mounted in a panel?
It features a unit mount, feed-thru design. It must be bolted directly to the enclosure backpan or mounting plate rather than plugging into a busbar.
Are there direct replacements with higher interrupting ratings?
Yes, if your application requires a higher fault current rating, the HJD3175 and JDC3175 offer higher interrupting capacities while maintaining the exact same Series C J-Frame physical footprint.
What safety checks are required before installing this breaker?
Always de-energize the switchboard or panel before beginning work. Ensure the system voltage does not exceed 600VAC or 250VDC, and verify the available fault current is within the breaker's maximum interrupting ratings.
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