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Eaton / Cutler-Hammer CAH3125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
CAH3125
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
CAH3125
Quantity
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Eaton / Cutler-Hammer CAH3125 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Sold out
Quantity
Eaton / Cutler-Hammer CAH3125 - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CAH3125 |
| Series | CAH |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Cutler-Hammer Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 6 AWG-350 kcmil (Cu/Al) |
| Max Wire | 350 kcmil |
| Min Wire | 6 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 |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity |
Quantity
Eaton / Cutler-Hammer CAH3125 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CAH3125-R |
| Series | CAH |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Cutler-Hammer Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 6 AWG-350 kcmil (Cu/Al) |
| Max Wire | 350 kcmil |
| Min Wire | 6 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 |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity |
Similar Items
175A 3 Pole Molded Case Circuit Breaker
225A 3 Pole Molded Case Circuit Breaker
Description
Designed for commercial use, the Eaton CAH3125 provides essential overcurrent protection in a 3-pole, 125A package. This MCCB is a key component of the legacy AB DE-ION series for older systems. The unit-mount design makes it compatible with vintage Cutler-Hammer switchboards and enclosures. For complete panel upgrades, the FD3125 serves as the modern equivalent. Rated for 240VAC, it delivers a 22kAIC interrupt capacity and relies on fixed LI functions to clear faults.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CAH3125-R |
| Series | CAH |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Cutler-Hammer Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 6 AWG-350 kcmil (Cu/Al) |
| Max Wire | 350 kcmil |
| Min Wire | 6 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 |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity |
Product FAQs
5 answersWhat is the modern replacement for the CAH3125 circuit breaker?
For complete panel upgrades, the Eaton FD3125 serves as the modern equivalent. The CAH3125 remains the direct replacement for existing legacy AB DE-ION series panelboards and switchboards.
What equipment is the CAH3125 designed to fit?
This unit mount breaker is compatible with vintage Cutler-Hammer and Westinghouse switchboards, panelboards, and motor control centers that accept the legacy CAH frame.
What wire sizes are accepted by the CAH3125 lugs?
The line and load lugs accommodate copper or aluminum conductors ranging from 6 AWG to 350 kcmil. Ensure proper torque specifications are followed during installation.
Are the trip settings on the CAH3125 adjustable?
No. This thermal-magnetic breaker relies on fixed long-time and instantaneous (LI) trip functions to clear faults. The trip curve cannot be modified in the field.
Can the CAH3125 be installed in a 480V system?
No. This breaker is rated for a maximum of 240VAC and provides a 22kAIC interrupt capacity at that voltage. Installing it in a 480V system violates safety standards and equipment ratings.
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