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Siemens / ITE EF2B070 Molded Case Circuit Breaker
- 70A
- 2 Pole
- Bolt-On
Siemens / ITE
EF2B070
Molded Case Circuit Breaker
Brand
Siemens / ITE
SKU
EF2B070
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Siemens / ITE EF2B070 - 70A 2 Pole Molded Case Circuit Breaker
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Description
Designed for heavy-duty commercial applications, the Siemens EF2B070 provides reliable 70A, 2-pole circuit protection. It utilizes fixed thermal and magnetic trip elements to defend against overloads in 600VAC systems. This bolt-on MCCB integrates into older Siemens and ITE panelboards, offering a precise fit for maintenance projects. It serves as the predecessor to the current ED62B070 substitute. The unit features an 18kA interrupting rating at 240VAC. Lugs are not included.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | EF2B070-R |
| Series | EF |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | EF |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens 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 | Lugs Not Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
6 answersIs the EF2B070 still in production, or is there a modern replacement?
The EF2B070 is a legacy E-frame breaker that is no longer in active production. The modern direct replacement is the Siemens ED62B070, which shares the same physical dimensions and bolt-on mounting for integration into older Siemens and ITE panelboards.
Which panelboards accept the EF2B070 circuit breaker?
This breaker is designed specifically for legacy Siemens and ITE panelboards and switchboards configured for bolt-on E-frame breakers. It will not fit in standard plug-on load centers.
What type of wire is compatible with the load side lugs on the EF2B070?
The factory-installed load side lugs are rated for both copper and aluminum (Cu/Al) conductors. They accept wire sizes ranging from 10 AWG up to 1/0 AWG.
Can this 2-pole breaker be used in DC voltage systems?
Yes, the EF2B070 is rated for use in 250VDC systems, where it provides an interrupting capacity of 10kA. This makes it suitable for specific industrial DC control and distribution applications.
Does the EF2B070 offer adjustable trip settings for coordination?
No, this breaker uses a non-interchangeable thermal-magnetic trip unit. Both the thermal (long-time) and magnetic (instantaneous) trip elements are fixed and cannot be adjusted in the field.
What are the short-circuit interrupting ratings across different AC voltages?
The breaker provides an 18kA interrupting rating at 240VAC. For higher voltage applications, the rating decreases to 14kA at both 480VAC and 600VAC. Ensure your system's available fault current does not exceed these values.
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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.