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Square D EGB34125SA Molded Case Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
Square D
EGB34125SA
Molded Case Circuit Breaker
Brand
Square D
SKU
EGB34125SA
Quantity
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Square D EGB34125SA - 125A 3 Pole Molded Case Circuit Breaker
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Description
Designed for advanced control applications, the Square D EGB34125SA integrates a 120VAC shunt trip mechanism into a standard E-Frame molded case circuit breaker. This allows facility managers to remotely open the 125-amp circuit for emergency shutdowns. The breaker installs into Square D NF panelboards via a secure bolt-on connection. Due to the factory-installed shunt trip, this model features a wider 3.92-inch profile. It maintains robust protection ratings and includes a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Series | EGB |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC |
| Frame Type | EGB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NF Panelboards |
| Wire Gauge | 14-2/0 AWG (Cu), 12-2/0 AWG (Al) |
| Max Wire | 2/0 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 | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included, Shunt Trip (Factory Installed) |
| Standards | CSA C22.2 No. 5, HACR Rated, NEMA AB 1, NOM 117, RoHS, UL 489 |
| Approval | CSA, cULus, HACR, NOM, RoHS, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
5 answersWhat does the SA suffix on the EGB34125SA catalog number indicate?
The SA suffix denotes that the circuit breaker includes a factory installed 110V to 130V AC shunt trip. This allows the breaker to be tripped remotely by applying voltage to the shunt trip coil.
How many pole spaces does the EGB34125SA occupy in an NF panelboard?
Although it is a three pole breaker, the EGB34125SA requires four pole spaces. The factory installed shunt trip module adds an extra 0.98 inch section to the unit, resulting in a total overall width of 3.92 inches.
Can I field install a shunt trip module on a standard EGB34125 circuit breaker?
No. Shunt trips for Square D E-Frame molded case circuit breakers are factory installed only. If your application requires remote tripping capabilities, you must order a breaker originally manufactured with the SA suffix.
Is the EGB34125SA suitable for use in I-Line or QO panelboards?
No. This breaker is strictly designed with a bolt on mounting base for Square D NF series distribution and lighting panelboards. It cannot be adapted for I-Line bus systems or QO load centers.
How is the shunt trip on the EGB34125SA utilized for safety applications?
The integrated 120V AC shunt trip is commonly wired into fire alarm control panels, emergency stop stations, or building automation interlocks. This allows external safety systems to instantly drop power to the 125A circuit when a hazard is detected.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 25 reviews.
Total 5 star reviews: 23 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
25 reviews
- RSRobert S.Verified BuyerReviewingSquare D EGB34015 - 15A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars4/21/26New breaker
Great product, exactly what I needed and shipped in a timely manner!
- EBEd B.Verified BuyerReviewingSquare D EGB34100 - 100A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars11/5/25100 amp breaker
Prompt ordering and shipping at a fair price. Thanks
- EBEd B.Verified BuyerReviewingSquare D EGB34015 - 15A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/11/25Breaker purchase
quick response and shipping
- TITim I.Verified BuyerReviewingSquare D EGB34040 - 40A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/6/25Problem Solved
The breakers showed up packaged very well and in great shape. The pricing was very competitive and solved our problem sourcing older circuit breakers.
- MKMarvin K.Verified BuyerReviewingSquare D EGB34045 - 45A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Square D EGB34045 3 Pole Circuit Breaker
Breaker and service was great and always has been. Looking forward more business in the future. Thanks.