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Square D EH34020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Plug-On
Square D
EH34020
Molded Case Circuit Breaker
Brand
Square D
SKU
EH34020
Quantity
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Square D EH34020 - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D EH34020 - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | EH34020 |
| Series | EH |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489, W-C-375B/GEN |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
Quantity
Square D EH34020 - 20A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | EH34020 |
| Series | EH |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489, W-C-375B/GEN |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
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Description
Engineered for commercial and industrial electrical systems, this 20-amp E-frame breaker delivers robust thermal-magnetic protection. It installs seamlessly into legacy Square D NEHB panelboards, providing a secure plug-on connection for three-phase distribution. Featuring a 14kAIC rating at 480Y/277VAC and a Visi-Trip indicator, it allows maintenance personnel to quickly identify tripped circuits during outages.Specifications
| Brand | Square D |
|---|---|
| Part Number | EH34020 |
| Series | EH |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489, W-C-375B/GEN |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
Product FAQs
6 answersWhich panelboards accept the EH34020 circuit breaker?
This breaker is designed specifically for legacy Square D NEHB panelboards. It features a plug-on mounting design that connects directly to the panelboard bussing without requiring mounting screws.
What is the difference between the EH34020 and the EHB34020?
The EH34020 features a plug-on mounting connection, whereas the EHB34020 is the bolt-on equivalent. Both breakers are designed for legacy NEHB series panelboards and share the same internal electrical ratings and physical dimensions.
What wire size is recommended for the load lugs on the EH34020?
The factory lugs accommodate 14 to 8 AWG copper wire or 12 to 8 AWG aluminum wire. Always refer to the breaker label for the exact torque specifications before terminating the connections.
Is the Square D EH34020 still actively manufactured?
No, the EH breaker family and NEHB panelboards are obsolete legacy products no longer produced by Schneider Electric. They are sourced through specialized electrical distributors holding legacy inventory.
Can the 3-pole EH34020 breaker be used on a 240V system even though it is rated for 480Y/277V?
Yes. Because it is rated for up to 480Y/277V AC, it can safely be installed on lower voltage 240V distribution systems. When applied at 240V, the short-circuit interrupting capacity rating increases from 14kAIC to 65kAIC.
What does the LI trip function indicate on this breaker?
LI stands for Long-Time and Instantaneous. The Long-Time thermal function provides protection against sustained overcurrent overloads, while the Instantaneous magnetic function protects against sudden, massive short circuits. Both trip thresholds are fixed on this E-frame breaker.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 7 reviews.
Total 5 star reviews: 7 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
7 reviews
- TSThomas S.Verified BuyerReviewingSiemens EH3B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/6/25Great
Thanks
- JMJim M.ReviewingSiemens EH3B040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/24/23They fit perfectly and saved
They fit perfectly and saved us a lot of money by being able to replace just these breakers
- KHKen H.ReviewingSiemens EH3B030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/12/23Great service
Great service and products fast shipping
- JSJerry S.ReviewingSiemens / ITE EH3B070 - 70A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/20/22Great Price - Breakers Work Fine
My local Supplier was charging me three times the price for a breaker that i bought on super Breakers.
- MRMatt R.ReviewingSiemens EH3B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/6/2020 Amp Breaker
Received item quickly and in great shape. Thank you!!!