Siemens EH2B040 Molded Case Circuit Breaker
- 40A
- 2 Pole
- Bolt-On
Quantity
Siemens EH2B040 - 40A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Delivering consistent thermal magnetic trip performance, this 40A Siemens MCCB is engineered for commercial power systems. The two-pole E-frame device provides essential long-time and instantaneous protection for branch circuits. Designed for secure bolt-on mounting, it fits into legacy ITE and Siemens P1, E2, and F2 panelboards. Facilities needing modern alternatives can cross-reference this unit with the ED42B040 replacement breaker.Specifications
| Brand | Siemens |
|---|---|
| Part Number | EH2B040 |
| Series | EH |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | EH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens / ITE Panelboards (Type E2, F2, P1) |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, CSA C22.2 No. 5 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
6 answersWhat panelboards are compatible with the EH2B040 circuit breaker?
This E-frame breaker is designed for secure bolt-on mounting in legacy ITE and Siemens P1, E2, and F2 panelboards.
Can the Siemens EH2B040 replace an older ITE brand EH breaker?
Yes. Siemens acquired ITE, and the Siemens EH2B040 serves as a direct bolt-on replacement for the legacy ITE EH2B040.
Is there a modern replacement for the EH2B040?
Yes. Facilities needing a modern alternative can cross-reference this unit with the Siemens ED42B040 circuit breaker, which serves as a functional replacement in many panelboard applications.
Can the EH2B040 be used in DC power systems?
Yes. This thermal-magnetic breaker is rated for use in DC applications up to 250VDC, where it provides a 10kAIC interrupting rating.
What wire sizes and materials are accepted by the EH2B040 lugs?
The factory lugs accept 14 AWG to 1/0 AWG wire and are rated for both copper and aluminum conductors.
Does this breaker provide both overload and short-circuit protection?
Yes. It features a thermal-magnetic trip unit with fixed long-time and instantaneous trip functions to protect against both overcurrents and short circuits.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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!!!