Eaton / Cutler-Hammer EC2020 Molded Case Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer EC2020 - 20A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the legacy Westinghouse E-Frame family, the Eaton EC2020 is a 2-pole, 20-amp molded case circuit breaker built for commercial systems. It delivers reliable thermal-magnetic protection with long-time and instantaneous trip functions. This unit mounts into older Cutler-Hammer Type EC panelboards using a standard bolt-on connection. For modern upgrades or replacements, the EHD2020 serves as the current substitute. Rated for 10 kAIC at 240VAC, it includes load side lugs for installation.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | EC |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | EC |
|---|---|
| Terminal Type | Lugs |
| For Use With | Cutler-Hammer Type EC Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | NEMA AB 1, UL 489 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | Common Trip |
Product FAQs
6 answersWhich panelboards are compatible with the EC2020 circuit breaker?
This breaker is designed specifically for installation in legacy Cutler-Hammer Type EC panelboards. It utilizes a bolt-on connection to secure directly to the panel bus.
What is the modern replacement for the legacy EC2020 breaker?
The Eaton EHD2020 serves as the direct modern equivalent for the EC2020. Both breakers share the same Westinghouse E-Frame footprint, allowing the EHD2020 to fit into the exact same panel spaces.
What wire sizes are accepted by the lugs on the EC2020?
The breaker includes load-side lugs that accommodate copper or aluminum conductors ranging from 14 AWG to 1/0 AWG.
How does the trip mechanism function on the EC2020?
It features a non-interchangeable, fixed thermal-magnetic trip unit. The thermal element provides long-time delay for overload conditions, while the magnetic element delivers instantaneous tripping for short circuits.
Can the EC2020 be installed in 480V or 600V systems?
No. The EC2020 is strictly rated for a maximum of 240VAC, where it provides a 10kA interrupting capacity. It lacks the internal clearances required for 480V or 600V distribution systems.
What frame family does the EC2020 belong to?
It is part of the legacy Westinghouse E-Frame family. This frame group includes the EC, EH, and EHD series of molded case circuit breakers, which share identical physical dimensions.
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