CCH3125 - Eaton Cutler-Hammer - Bolt-On Molded Case Circuit Breaker - 125 Amp - 3 Pole - 240 Volt
CCH3125 - Eaton Cutler-Hammer - Bolt-On Molded Case Circuit Breaker - 125 Amp - 3 Pole - 240 Volt
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The Eaton Cutler-Hammer CCH3125 is a 125A, 3-pole molded case circuit breaker with bolt-on mounting, rated 240VAC and built as a tenant main for Type ECC unit enclosures and commercial meter stacks.
Multi-tenant commercial buildings need a dedicated main for each metered space, and the CCH is Eaton's purpose-built device for that position. It provides fixed thermal-magnetic Long-Time and Instantaneous (LI) protection with a 25kA interrupting rating at 240VAC — enough margin for the fault current typically available downstream of a utility transformer serving a meter bank. Line and load lugs are included and accept conductors from 2/0 AWG up to 300 kcmil, which covers the full range of feeder sizes used at 125A. Eaton has since replaced this catalog number with the CVH3125X, but the CCH3125 remains the exact mechanical and electrical fit for existing CCH hardware.
Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | CCH |
| Part Number | CCH3125 |
| Amperage | 125A |
| Voltage | 240VAC |
| Poles | 3 |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC (UL 489) |
| Mounting Style | Bolt-On |
| Terminal Type | Lugs |
| For Use With | Type ECC Unit Enclosures, Commercial Meter Stacks |
| Trip Technology | Thermal Magnetic (LI — Long-Time, Instantaneous) |
| Trip Adjustability | Fixed Thermal / Fixed Magnetic |
| Wire Range | 2/0 AWG – 300 kcmil (Cu/Al) |
| Accessories Included | Line and Load Lugs |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
| Superseded By | Eaton CVH3125X |
| Standards | UL 489, CSA C22.2 |
| Approvals | UL, CSA |
| Construction Features | High Interrupting Capacity, Tenant Main Application |
| Operating Temperature | 40°C |
| Shipping Dimensions | 12 x 9 x 9 in |
| Shipping Weight | 10 lb |
| Condition | New |
Frequently Asked Questions
What is a tenant main breaker?
The overcurrent device that serves an individual metered tenant space in a multi-occupancy commercial building, installed in the meter stack or unit enclosure downstream of the utility metering.
What is the interrupting rating of the CCH3125?
25kA at 240VAC.
Can the CCH3125 be used at 480V?
No. It is rated 240VAC maximum. For 480V applications, select a 480V- or 600V-class device.
What replaced the CCH3125?
Eaton's current catalog number is the CVH3125X. The CCH3125 remains the exact fit for existing CCH-series enclosures and meter stacks.
Are lugs included with the CCH3125?
Yes. Both line and load lugs are supplied, accepting 2/0 AWG through 300 kcmil copper or aluminum conductors.
What enclosures accept the CCH3125?
Eaton Type ECC unit enclosures and commercial meter stack assemblies designed for CCH-series bolt-on mounting.
Is the 125A trip rating adjustable?
No. The CCH uses a fixed thermal and fixed magnetic trip unit.
Is the CCH3125 UL listed?
Yes. It is UL 489 listed and CSA certified to C22.2.