Square D EGB36100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Square D
EGB36100
Molded Case Circuit Breaker
Brand
Square D
SKU
EGB36100
Quantity
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Square D EGB36100 - 100A 3 Pole Molded Case Circuit Breaker
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Description
Built for heavy-duty distribution, this 100A, 3-pole E-Frame circuit breaker delivers reliable thermal-magnetic protection. It is designed to meet the demands of commercial facilities. This model mounts into Square D NF panelboards via a sturdy bolt-on connection. The lugs accept wire sizes from 14 to 2/0 AWG in copper and aluminum. It boasts a 65 kAIC rating at 240V and 35 kAIC at 480Y/277V. Additional features include an HACR certification and a Visi-Trip flag for rapid troubleshooting.Specifications
| Brand | Square D |
|---|---|
| Series | EGB |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 480Y/277VAC, 600Y/347VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC, 18kA @ 600Y/347VAC |
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, cULus, HACR, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Visual Trip Indicator |
Product FAQs
8 answersWhat panelboards are compatible with the EGB36100 circuit breaker?
The EGB36100 is designed exclusively for use in Square D NF series panelboards. It will not fit NQ, I-Line, or standard QO load centers.
What does the G in the EGB36100 part number signify?
The G indicates the interrupting rating tier within the Square D E-frame family. EGB breakers provide a 35 kAIC rating at 480Y/277 VAC, which sits between the standard EDB and high-interrupting EJB tiers.
Is there a higher interrupting rating alternative to the EGB36100?
Yes. If your system requires a higher fault current rating, the EJB36100 offers 65 kAIC at 480Y/277 VAC while maintaining the exact same physical footprint and NF panelboard compatibility.
Can I substitute an EDB36100 instead of the EGB36100?
The EDB36100 is the standard 18 kAIC version of this breaker at 480Y/277 VAC. It can only be used as a substitute if your system's available fault current is confirmed to be below 18 kA. Always verify required interrupting ratings before downgrading.
Does the EGB36100 feature an adjustable trip unit?
No, this breaker utilizes a fixed thermal magnetic trip unit with factory-set long-time and instantaneous (LI) trip functions. It does not have adjustable dials for coordination settings.
What wire sizes are accepted by the EGB36100 terminals?
The factory lugs accept 14 to 2/0 AWG copper wire or 12 to 2/0 AWG aluminum wire. Ensure all conductors are properly sized for the 100A rating according to the National Electrical Code (NEC).
How does the EGB36100 connect to the panelboard?
This is a bolt-on circuit breaker. It secures directly to the NF panelboard bus using mounting bolts, which provides a secure mechanical and electrical connection designed for commercial and industrial applications.
What safety procedures are required when installing this bolt-on breaker?
Always completely de-energize the NF panelboard before installing or removing bolt-on breakers. Verify that all power is disconnected using a properly rated voltage meter and follow standard lockout/tagout protocols.
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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.