Eaton / Cutler-HammerJGS3175FAG
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Eaton / Cutler-Hammer JGS3150FAG Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
JGS3150FAG
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
JGS3150FAG
Quantity
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Eaton / Cutler-Hammer JGS3150FAG - 150A 3 Pole Molded Case Circuit Breaker
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Description
Delivering advanced circuit protection, this 150A Eaton MCCB is engineered for heavy-duty commercial and industrial environments. The JGS catalog designation indicates a standard interrupting capacity of 35 kAIC at 480VAC. Designed as a unit-mount solution, the JG-frame device fits perfectly into compatible Eaton panelboards, MCCs, and switchboards. Equipped with an adjustable magnetic (LI) trip, it provides reliable long-time and instantaneous fault clearing for complex power networks.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | JGS3150FAG |
| Series | JGS |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC, 22kA @ 250VDC |
| Frame Type | JG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series G Panelboards, Switchboards, MCCs |
| Wire Gauge | 4 AWG - 350 kcmil |
| 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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Terminal Shields |
|---|---|
| Accessories | Line and Load Lugs Included (TA250FJ), Mounting Hardware |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, KEMA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
9 answersWhat equipment is the JGS3150FAG compatible with?
This JG-frame breaker is designed for Eaton Series G panelboards, switchboards, and motor control centers. It is also compatible with select Allen-Bradley and Rockwell Automation enclosed controls.
Are mounting lugs included with the JGS3150FAG?
Yes, this catalog number ships with standard mechanical line and load lugs installed for feed-thru wiring.
What does the FAG suffix mean in the JGS3150FAG catalog number?
The FAG designation indicates the breaker features a fixed thermal and adjustable magnetic trip unit, and comes factory-equipped with standard line and load terminals.
How is the magnetic trip adjusted on the JGS3150FAG?
The instantaneous magnetic trip is adjustable via a dial on the front face of the trip unit. This allows electricians to fine-tune the short-circuit pickup level based on the specific load characteristics.
Does the JGS3150FAG use a 150A or 250A frame?
It uses the 250-amp JG frame, which is the physical housing size, but the thermal trip unit is factory-calibrated for a maximum continuous current of 150 amps.
Is the JGS3150FAG a direct replacement for older Westinghouse JG breakers?
No. While Eaton acquired Westinghouse, the modern Series G breakers have different physical dimensions and mounting footprints than legacy Westinghouse classic JG or Series C breakers. Verify your enclosure hardware before upgrading.
What does free-standing or unit-mount mean for this breaker?
It means the breaker is designed to be bolted directly to a mounting pan or chassis using hardware, rather than plugging onto a panelboard busbar.
Is the JGS3150FAG HACR rated?
Yes, this circuit breaker carries an HACR rating, making it approved for protecting heating, air conditioning, and refrigeration equipment circuits.
Does this breaker provide ground fault protection?
No, the JGS3150FAG features a standard thermal-magnetic trip unit for overload and short-circuit protection. It does not include integral ground fault or earth leakage protection.
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