Siemens / ITE EF3B035 Molded Case Circuit Breaker
- 35A
- 3 Pole
- Unit Mount
Quantity
Siemens / ITE EF3B035 - 35A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Designed to maintain older infrastructure, the Siemens EF3B035 is a 35-amp, 3-pole molded case circuit breaker. It provides essential long-time and instantaneous (LI) protection for 600VAC commercial applications. This unit mount breaker integrates into legacy ITE and Siemens FC, FCI, and CDP panelboards. Utilizing this exact E-frame model ensures a proper fit without requiring the modern ED63B035 substitute. It delivers a 14 kAIC interrupt rating at 480VAC and utilizes reliable lug terminals.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | EF3B035-R |
| Series | EF |
| Amperage | 35A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | EF |
|---|---|
| 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 | None Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
7 answersWhich panelboards are compatible with the EF3B035 circuit breaker?
This E-frame breaker is designed for installation in legacy ITE and Siemens FC, FCI, and CDP panelboards.
What wire sizes are accepted by the load side lugs on the EF3B035?
The terminals accept 10 AWG to 1/0 AWG copper or aluminum (Cu/Al) conductors.
How does the EF3B035 mount into the panelboard?
It is a unit mount, bolt-on circuit breaker.
Is the EF3B035 rated for direct current (DC) systems?
Yes, in addition to its AC ratings, this breaker is rated for 250VDC applications with a 10kAIC interrupting capacity.
Can the trip unit on the EF3B035 be swapped or adjusted?
No, this breaker features a non-interchangeable thermal-magnetic trip unit with fixed long-time and instantaneous (LI) functions.
Is the EF3B035 a legacy breaker?
Yes, it is a legacy molded case circuit breaker used to maintain older ITE and Siemens infrastructure. Using this exact model allows for direct replacement without requiring modern frame substitutes.
What type of fault protection does the EF3B035 provide?
It provides standard long-time and instantaneous (LI) thermal-magnetic protection to safeguard circuits against overloads and short circuits.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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.