Siemens EF1B015 Molded Case Circuit Breaker
- 15A
- 1 Pole
- Bolt-On
Quantity
Siemens EF1B015 - 15A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built for commercial power distribution, the Siemens EF1B015 is a 1-pole, 15A molded case circuit breaker. Part of the legacy E-Frame family, it features a fixed thermal-magnetic trip unit for dependable long-time and instantaneous protection. This bolt-on breaker installs into Siemens P1, P2, and P3 panelboards, as well as older I-T-E enclosures. For modern upgrades, it is replaced by the ED61B015. Rated 14 kAIC at 347VAC, it includes HACR, SWD, and HID ratings for versatile use.Specifications
| Brand | Siemens |
|---|---|
| Part Number | EF1B015-R |
| Series | EF |
| Amperage | 15A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 125VDC, 347VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 125VDC, 14kA @ 347VAC |
| Frame Type | EF |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Legacy I-T-E Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, HID Rated, Non-Interchangeable Trip |
Product FAQs
6 answersWhich panelboards accept the Siemens EF1B015 circuit breaker?
This bolt-on breaker is compatible with Siemens P1, P2, and P3 panelboards. It is also backward compatible with legacy I-T-E panelboards designed for E-frame breakers.
Can I use the Siemens EF1B015 to replace an older I-T-E breaker?
Yes, Siemens manufactures this breaker as a direct replacement for legacy I-T-E 1-pole, 15A EF-frame breakers. It maintains the exact same physical footprint and bolt-on mounting style.
Do the lugs on the EF1B015 accept both copper and aluminum wiring?
Yes, the factory-installed lugs are dual-rated for both copper (14 to 10 AWG) and aluminum (12 to 10 AWG) conductors. Always apply an appropriate oxide inhibitor when terminating aluminum wire.
Can the EF1B015 be installed in direct current (DC) control panels?
Yes, the thermal-magnetic trip unit is rated for DC applications up to 125VDC, delivering a 10kA interrupting capacity. This makes it suitable for various industrial DC control and distribution circuits.
Can the EF1B015 be used in 347V lighting circuits?
Yes, this breaker is commonly used in commercial and industrial 347VAC applications, where it provides a 14kA interrupting rating. It is also fully rated for up to 600V systems at 10kA.
How does the trip unit on the EF1B015 operate?
The breaker uses a fixed thermal-magnetic trip unit. The thermal component provides long-time protection against sustained overloads, while the magnetic component offers instantaneous protection against short circuits.
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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.