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Eaton / Cutler-Hammer CHH3125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
CHH3125
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
CHH3125
Quantity
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Eaton / Cutler-Hammer CHH3125 - 125A 3 Pole Molded Case Circuit Breaker
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Eaton / Cutler-Hammer CHH3125 - 125A 3 Pole Molded Case Circuit Breaker
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| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CHH3125 |
| Series | CHH |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC |
| Frame Type | CHH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Modular Metering Stacks (35MM, 37MM, 37SS) |
| Wire Gauge | #2 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | #2 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Tenant Main, High Interrupting Capacity |
Quantity
Eaton / Cutler-Hammer CHH3125 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | CHH |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC |
| Frame Type | CHH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Modular Metering Stacks (35MM, 37MM, 37SS) |
| Wire Gauge | #2 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | #2 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Tenant Main, High Interrupting Capacity |
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Description
Part of Eaton's CHH series, the 125A CHH3125 delivers robust thermal-magnetic protection for commercial and residential applications. This three-pole breaker is HACR rated and specifically engineered to serve as a tenant main. It mounts into Eaton 35MM, 37MM, and 37SS modular metering stacks using a secure bolt-on connection. For legacy panel upgrades, this unit is officially replaced by the CVH3125XMM. Featuring a high interrupting capacity of 100 kAIC at 240VAC, it safely clears severe faults.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | CHH |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC |
| Frame Type | CHH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Modular Metering Stacks (35MM, 37MM, 37SS) |
| Wire Gauge | #2 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | #2 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Tenant Main, High Interrupting Capacity |
Product FAQs
7 answersWhat equipment is the CHH3125 breaker designed to be installed in?
The CHH3125 is a bolt-on main tenant circuit breaker specifically designed for use in Eaton commercial modular metering stacks, including the 35MM, 37MM, and 37SS series.
What does the 100kAIC rating mean for this specific frame?
The 100kAIC rating indicates that the breaker can safely interrupt up to 100,000 amps of fault current at 240VAC. This high interrupting capacity makes it suitable for commercial metering applications where high available fault currents are present.
Can the CHH3125 be installed in a standard plug-on residential load center?
No. The CHH3125 is a bolt-on molded case circuit breaker designed exclusively for feed-thru connections in Eaton modular metering stacks. It is not compatible with standard plug-on load centers.
What is the modern replacement for the CHH3125 in legacy panel upgrades?
For complete panel upgrades or when replacing legacy tenant mains in certain metering stacks, the CVH3125XMM is the official modern equivalent. Always verify fitment and interrupting requirements with your specific modular metering stack.
Are the lugs on the CHH3125 rated for aluminum wire?
Yes, the factory-installed lugs are dual-rated for both copper (Cu) and aluminum (Al) conductors. They accept wire sizes ranging from #2 AWG up to 300 kcmil.
Does the CHH3125 feature adjustable trip settings?
No, this breaker utilizes a fixed thermal-magnetic trip unit with standard Long-Time and Instantaneous (LI) trip functions. The trip settings cannot be adjusted in the field.
Is the CHH3125 suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires a 125A, 3-pole disconnect.
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