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Siemens / ITE EF2B035 Molded Case Circuit Breaker
- 35A
- 2 Pole
- Unit Mount
Siemens / ITE
EF2B035
Molded Case Circuit Breaker
Brand
Siemens / ITE
SKU
EF2B035
Quantity
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Siemens / ITE EF2B035 - 35A 2 Pole Molded Case Circuit Breaker
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Description
Built for commercial and industrial power distribution, the Siemens EF2B035 is a 35A, 2-pole molded case circuit breaker. It features thermal-magnetic trip technology with fixed long-time and instantaneous (LI) protection functions. Rated for 14 kAIC at 480VAC, this legacy E-frame unit mounts into older ITE and Siemens FC, FCI, and CDP panelboards. It serves as an exact drop-in replacement, eliminating the need for retrofits. Can be substituted with the newer ED62B035 model.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | EF2B035-R |
| Series | EF |
| Amperage | 35A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | ITE / Siemens FC, FCI, CDP Panelboards |
| Wire Gauge | 10-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 10 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, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
8 answersWhat panelboards are compatible with the EF2B035 circuit breaker?
The EF2B035 is a legacy E-frame breaker designed specifically for bolt-on installation in older ITE and Siemens FC, FCI, and CDP panelboards.
Can I install the EF2B035 in a standard residential load center?
No. The EF2B035 is an industrial molded case circuit breaker designed for commercial panelboards. It will not fit in standard Siemens residential plug-on load centers that require QP or QT type breakers.
Are ITE and Siemens EF-frame breakers interchangeable?
Yes, Siemens acquired ITE and continued manufacturing the same E-frame breakers under the Siemens brand. An ITE EF2B035 and a Siemens EF2B035 are the exact same physical and electrical component.
Can I use a modern ED-frame breaker to replace the EF2B035?
While modern Siemens ED-frame breakers serve as the current equivalent, upgrading from an EF-frame to an ED-frame often requires changing the panelboard mounting strap kit. Sourcing an exact EF2B035 replacement allows you to reuse your existing hardware.
Is the EF2B035 suitable for DC voltage applications?
Yes, in addition to its 600VAC rating, this thermal-magnetic breaker is rated for up to 250VDC with an interrupting capacity of 10kAIC, making it suitable for specific industrial DC control circuits.
Does this breaker provide adjustable trip settings?
No, the EF2B035 features a fixed thermal and fixed magnetic trip unit. It provides standard Long-Time and Instantaneous (LI) protection without field-adjustable dials.
What type of wire is approved for the EF2B035 lugs?
The factory-installed lugs accept both copper and aluminum conductors ranging from 10 AWG to 1/0 AWG. Always apply an approved oxide-inhibiting joint compound when terminating aluminum wire.
How is the EF2B035 secured to the panelboard bus?
This is a unit-mount, bolt-on circuit breaker. It fastens directly to the panelboard bus bars using bolted connections, which provides a secure, high-vibration resistant termination compared to plug-on designs.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 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
2 reviews
- VGVictor G.Verified BuyerRated 5 out of 5 stars11/6/25Breakers fit my needs
I wish I would of shopped this I found exact breaker for 400.00 cheaper
- RFRobert F.ReviewingSiemens EF3A100 - 100A 3 Pole Motor Circuit ProtectorI recommend this productRated 5 out of 5 stars7/25/22Fast order and service for a part in good condition
Fast order and service for a part in good condition.