Eaton / Cutler-Hammer CSH2125N Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer CSH2125N - 125A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for reliable power distribution, the CSH2125N is a 125A, two-pole main breaker from Eaton. It utilizes fixed thermal-magnetic trip technology to protect electrical systems from overcurrents. Designed for seamless integration, this unit bolts into Eaton CH load centers and Type ECB enclosures. It accepts 2 AWG to 300 kcmil conductors and replaces the lower-rated CSR2125N. With an elevated 35kAIC interrupting capacity at 120/240V, it provides an extra margin of safety for demanding setups.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CSH2125N |
| Series | CSH |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 35kA @ 120/240VAC |
| Frame Type | CSR |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton CH Load Centers, Type ECB Unit Enclosures |
| 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Bell Alarm |
|---|---|
| Accessories | Mounting Hardware |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker, High Interrupting Rating |
Product FAQs
6 answersWhich Eaton panels are compatible with the CSH2125N main breaker?
This breaker is specifically engineered to serve as the main disconnect in Eaton CH load centers and Type ECB unit enclosures.
Can I upgrade from a CSR2125N to the CSH2125N?
Yes. The CSH2125N shares the same physical dimensions and mounting configuration as the CSR2125N but offers a higher interrupting capacity of 35kAIC, making it an ideal upgrade for systems requiring higher fault current protection.
What frame type does the CSH2125N belong to?
It is built on the Eaton CSR frame, which is designed specifically for main breaker applications in CH series load centers. The CSH designation indicates the higher 35kAIC rating for this specific frame size.
Is the CSH2125N suitable for use as a service entrance main disconnect?
Yes, when installed in an approved Eaton CH load center or ECB unit enclosure, it functions as the primary service entrance disconnect and overcurrent protection device for residential and light commercial applications.
What conductor types and sizes are supported by the CSH2125N lugs?
The factory-installed lugs accept both copper and aluminum wiring from 2 AWG up to 300 kcmil, accommodating standard service entrance conductors for 125A applications.
How does the thermal-magnetic trip mechanism in the CSH2125N protect electrical circuits?
The fixed thermal element provides a delayed response to prevent nuisance tripping during temporary overloads, while the fixed magnetic element delivers an instantaneous trip to quickly clear severe short circuits.
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