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Eaton / Cutler-Hammer CHH2125H4X Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Eaton / Cutler-Hammer
CHH2125H4X
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
CHH2125H4X
Quantity
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Eaton / Cutler-Hammer CHH2125H4X - 125A 2 Pole Molded Case Circuit Breaker
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Description
The Eaton CHH2125H4X is a 125A, two-pole molded case circuit breaker tailored for residential and commercial metering centers. Designed with a bolt-on mounting style, it integrates into Eaton 1MM, 35MM, 37MM, and 37SS modular metering stacks as a tenant main. For system upgrades, this model is replaced by the CVS2125XMM. Rated for 42 kAIC at 120/240VAC, it offers enhanced interrupting capacity and supports optional accessories like shunt trips.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CHH2125H4X |
| Series | CHH |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 42kA @ 120/240VAC |
| Frame Type | CHH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Modular Metering Stacks (1MM, 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 | Load Side Lugs |
| Standards | UL 489, CSA C22.2 No. 5 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Tenant Main |
Product FAQs
5 answersWhich Eaton metering stacks are compatible with the CHH2125H4X?
This breaker serves as a tenant main and bolts directly into Eaton 1MM, 35MM, 37MM, and 37SS modular metering stacks.
What are the acceptable wire sizes for the load lugs on this breaker?
The integrated lugs accept conductor sizes from #2 AWG up to 300 kcmil and are rated for both copper and aluminum wiring.
What is the direct replacement for the CHH2125H4X?
For system upgrades or when replacing this legacy tenant main, Eaton officially replaces this model with the CVS2125XMM.
Is the trip unit on this breaker adjustable?
No, it features a fixed thermal-magnetic trip unit with preset long-time and instantaneous (LI) trip functions.
Can this breaker be used in systems with high fault currents?
Yes, it is rated to safely interrupt up to 42,000 amps (42kAIC) at 240V, making it suitable for commercial metering centers that require higher fault current protection than standard residential breakers.
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