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Eaton / Cutler-Hammer JDB3250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
JDB3250
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
JDB3250
Quantity
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Eaton / Cutler-Hammer JDB3250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer JDB3250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | JDB3250 |
| Series | JDB |
| Amperage | 250A |
| 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 |
Quantity
Eaton / Cutler-Hammer JDB3250 - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | JDB3250 |
| Series | JDB |
| Amperage | 250A |
| 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 |
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Description
Built for heavy-duty applications, the Eaton JDB3250 is a 3-pole, 250A molded case circuit breaker. As part of the Series C J-Frame lineup, it provides dependable long-time and instantaneous (LI) protection. This unit mount breaker replaces legacy JD3250 models. It is designed for use within Eaton Series C panelboards, switchboards, and motor control centers. Featuring a factory-sealed trip unit, this HACR-rated breaker delivers 35 kAIC at 480V and supports reverse feed setups.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | JDB3250 |
| Series | JDB |
| Amperage | 250A |
| 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 panels and enclosures accept the JDB3250 circuit breaker?
The JDB3250 mounts in Eaton Series C panelboards, switchboards, and motor control centers. It is also compatible with standalone NEMA enclosures designed for Series C J-Frame breakers.
Can the JDB3250 be reverse fed?
Yes. This breaker features a non-interchangeable thermal magnetic trip unit and is rated for reverse feed applications, allowing power to be supplied to either the line or load side terminals.
What terminal lugs are standard for this breaker?
The factory standard terminal lugs are part number TA250KB, which accept 4 AWG to 350 kcmil aluminum or copper conductors.
Is the trip unit on the JDB3250 interchangeable?
No. The JDB3250 comes equipped with a factory-sealed, non-interchangeable thermal magnetic trip unit with fixed long-time and instantaneous (LI) functions. If you require field-interchangeable trip units, you must use a standard JD or HJD frame instead.
Which older Cutler-Hammer breakers does the JDB3250 directly replace?
The Series C JDB3250 is a direct dimensional and functional replacement for legacy Westinghouse and Cutler-Hammer JB3250 and JB3250S molded case circuit breakers.
Does this breaker accept field-installable accessories?
Yes. It accepts standard Eaton Series C J-Frame internal accessories such as shunt trips, auxiliary switches, and undervoltage releases, as well as external operating mechanisms like flex shafts and rotary handles.
Is this circuit breaker approved for HVAC motor loads?
Yes. The JDB3250 is HACR rated, meaning it has been tested and approved for the unique inrush currents and short-circuit demands of heating, air conditioning, and refrigeration equipment.
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