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Square D EH34050 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Plug-On
Square D
EH34050
Molded Case Circuit Breaker
Brand
Square D
SKU
EH34050
Quantity
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Square D EH34050 - 50A 3 Pole Molded Case Circuit Breaker
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Square D EH34050 - 50A 3 Pole Molded Case Circuit Breaker
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| Brand | Square D |
|---|---|
| Part Number | EH34050 |
| Series | EH |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Frame Type | EH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 14-2 AWG (Cu), 12-2 AWG (Al) |
| Max Wire | 2 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, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
Quantity
Square D EH34050 - 50A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | EH34050 |
| Series | EH |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Frame Type | EH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 14-2 AWG (Cu), 12-2 AWG (Al) |
| Max Wire | 2 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, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
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Description
Manufactured for industrial and commercial power distribution, the Square D EH34050 provides 50 amps of reliable circuit protection. The thermal-magnetic mechanism ensures consistent response to overcurrent events. Designed specifically for Square D NEHB panelboards, this three-pole breaker features a convenient plug-on mounting style. It helps maintain older electrical systems without requiring complete panel upgrades. The unit boasts a 65 kAIC rating at 240V and includes the Visi-Trip flag.Specifications
| Brand | Square D |
|---|---|
| Part Number | EH34050 |
| Series | EH |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Frame Type | EH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 14-2 AWG (Cu), 12-2 AWG (Al) |
| Max Wire | 2 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, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
Product FAQs
6 answersWhich panelboards are compatible with the EH34050 breaker?
The EH34050 is designed exclusively for legacy Square D NEHB panelboards. It uses a plug-in connection, making it a direct replacement part for maintaining older commercial distribution systems without requiring a full panel upgrade.
What is the difference between the EH34050 and the EHB34050?
Both are 50A, 3-pole breakers for NEHB panelboards, but they use different mounting methods. The EH34050 is a plug-in breaker, whereas the EHB34050 requires a bolt-on connection. Verify your panelboard's bus structure before selecting a replacement.
What wire sizes are supported by the EH34050 lugs?
The factory-installed load lugs accept 14 AWG to 2 AWG copper (Cu) conductors, or 12 AWG to 2 AWG aluminum (Al) conductors.
How does the interrupting rating change based on system voltage?
The EH34050 is rated for 65kAIC when installed in 240VAC systems. When applied to 480Y/277VAC systems, the maximum interrupting rating is 14kAIC.
What trip functions are included in the EH34050?
This breaker utilizes a fixed thermal-magnetic trip unit with long-time and instantaneous (LI) functions. The thermal component protects against sustained overloads, while the magnetic component provides immediate tripping during short-circuit faults.
Does the EH34050 feature a visual trip indicator?
Yes, it includes the Square D Visi-Trip indicator. When the breaker trips, the handle moves to a center position and a red flag appears, allowing facility managers and electricians to quickly identify the faulted circuit in the NEHB panelboard.
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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!!!