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Eaton / Cutler-Hammer JDB3150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
JDB3150
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
JDB3150
Quantity
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Eaton / Cutler-Hammer JDB3150 - 150A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for heavy-duty power distribution, the Eaton JDB3150 provides 150 amps of thermal-magnetic protection. This three-pole, unit mount MCCB is a drop-in replacement for legacy JD3150 breakers, ensuring seamless integration into existing infrastructure. It fits securely into Series C panelboards, industrial enclosures, and switchboards. Featuring a factory-sealed, non-interchangeable trip unit, it handles fault currents up to 35kA at 480VAC while offering reverse feed capabilities.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | JDB3150 |
| Series | JDB |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers, Enclosures |
| Wire Gauge | 4 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 4 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, Terminal Shields |
|---|---|
| Accessories | Standard Lugs (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, Factory Sealed, Non-Interchangeable Trip |
Product FAQs
7 answersWhat enclosures and panelboards are compatible with the JDB3150?
This J-Frame breaker is designed for use in Eaton Series C panelboards, switchboards, motor control centers, and industrial enclosures.
Can the JDB3150 be reverse fed?
Yes, this breaker is suitable for reverse feed applications.
What wire sizes do the standard lugs on the JDB3150 accept?
The included line and load side lug terminals accept 4 AWG to 350 kcmil aluminum or copper (Al/Cu) conductors.
Is the JDB3150 rated for direct current (DC) systems?
Yes, it is rated for DC applications up to 250VDC with an interrupting capacity of 10kA.
What is the difference between the JDB3150 and the JD3150?
Both are 150A Series C J-Frame breakers, but the JDB3150 features a factory-sealed, non-interchangeable trip unit. The JD3150 uses an interchangeable trip unit, allowing the thermal-magnetic trip to be swapped if system requirements change.
How does the JDB3150 differ from the HJD3150?
While they share the same physical dimensions, the HJD3150 is a high-interrupting breaker rated for 65kA at 480VAC. The JDB3150 is a standard-interrupting breaker rated for 35kA at 480VAC.
What does the LI trip function indicate on this breaker?
LI stands for Long-Time and Instantaneous trip functions. On the JDB3150, this is provided by a fixed thermal and fixed magnetic trip unit to protect against overloads and short circuits.
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