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Siemens / ITE EH3B125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
Siemens / ITE
EH3B125
Molded Case Circuit Breaker
Brand
Siemens / ITE
SKU
EH3B125
Quantity
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Siemens / ITE EH3B125 - 125A 3 Pole Molded Case Circuit Breaker
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Description
Built for industrial applications, the EH3B125 delivers reliable overcurrent protection in a classic E-frame footprint. It mounts into Siemens P2 and P3 panelboards, offering an exact replacement solution for aging electrical systems without the need for retrofit kits. Rated for 14kAIC at 480VAC, this three-pole MCCB utilizes fixed thermal and magnetic trip elements. Facility managers can use this unit to replace older ITE breakers or as a substitute for the ED63B125 model.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | EH3B125-R |
| Series | EH |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P2, P3 Panelboards, ITE Panelboards |
| Wire Gauge | 4 AWG - 3/0 AWG (Cu/Al) |
| Max Wire | 3/0 AWG |
| Min Wire | 4 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, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
5 answersWhich panelboards accept the EH3B125 circuit breaker?
This E frame breaker is engineered for bolt-on installation in Siemens P2 and P3 panelboards, as well as legacy ITE panelboards.
Can the EH3B125 substitute for other Siemens catalog numbers?
Yes, facility managers and electricians can use this unit to replace older ITE breakers or as a direct substitute for the ED63B125 model in compatible panels.
What are the wire size requirements for the load side terminals?
The load side lugs accommodate copper or aluminum conductors ranging from 4 AWG to 3/0 AWG. Ensure proper torque specifications are followed during installation.
What type of protection does the LI trip unit offer?
The fixed thermal magnetic trip unit provides long-time (L) protection for sustained overloads and instantaneous (I) protection for immediate response to short-circuit faults.
Does this breaker support adjustable trip settings?
No, the EH3B125 features fixed thermal and fixed magnetic trip elements. It does not allow for field adjustments to the trip curve.
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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!!!