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Eaton / Cutler-Hammer EHC3040 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
EHC3040
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
EHC3040
Quantity
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Eaton / Cutler-Hammer EHC3040 - 40A 3 Pole Molded Case Circuit Breaker
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Description
Built for commercial and industrial applications, the Eaton EHC3040 is a 3-pole, 40-amp molded case circuit breaker from the Series C F-frame family. It installs into Eaton panelboards, switchboards, and motor control centers using a secure bolt-on connection. Rated for 14 kAIC at 480VAC, this breaker features fixed thermal and magnetic trip functions (LI) to protect against overloads and short circuits. It serves as an exact replacement for legacy EHC models and is superseded by the EHD3040.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | EHC |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | EHC |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Reverse Feed |
Product FAQs
4 answersWhat panelboards are compatible with the EHC3040 circuit breaker?
The EHC3040 is designed for use in Eaton Series C panelboards, switchboards, and motor control centers. It is commonly installed in Pow-R-Line 3a (PRL3a) and Pow-R-Line 4 (PRL4) panelboards using the appropriate F-frame connector kits.
What is the direct replacement for the legacy EHC3040?
The EHC3040 is a legacy Series C F-frame breaker that is directly superseded by the Eaton EHD3040. The EHD3040 shares the same physical dimensions, mounting hardware, and electrical ratings, making it an exact drop-in replacement.
What are the terminal torque specifications for the EHC3040?
For standard F-frame lugs, the required torque depends on the wire gauge: 35 lb-in for 14-10 AWG, 40 lb-in for 8 AWG, and 45 lb-in for 6-4 AWG. Always verify the exact torque values printed on the breaker nameplate before finalizing the installation.
What connector kits are required to mount the EHC3040 in Pow-R-Line panels?
When installing this 3-pole bolt-on breaker into Eaton Pow-R-Line panelboards, you must use the correct F-frame connector kit. Use the KPRL3AFD3 kit for PRL3a panels and the KPRL4FD kit for PRL4 panels.
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