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Siemens EF2B020 Molded Case Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Siemens
EF2B020
Molded Case Circuit Breaker
Brand
Siemens
SKU
EF2B020
Quantity
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Siemens EF2B020 - 20A 2 Pole Molded Case Circuit Breaker
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Description
Built for industrial applications, this 20A E-Frame breaker utilizes fixed thermal and magnetic trip elements. It operates safely up to 600VAC or 250VDC, making it highly versatile for older commercial facilities. The bolt-on configuration is specifically engineered for compatibility with legacy Siemens and I-T-E FC-1 panelboards. Facility managers looking for current equivalents can cross-reference the ED62B020. With an 18kAIC rating at 240VAC, it ensures robust fault clearing capabilities.Specifications
| Brand | Siemens |
|---|---|
| Part Number | EF2B020 |
| Series | EF |
| Amperage | 20A |
| 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 / I-T-E Panelboards, FC-1 Panelboards, FC-20 Switchboards |
| Wire Gauge | 14-10 AWG (Cu/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, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
6 answersWhat panelboards are compatible with the EF2B020?
This bolt-on breaker is designed for use in legacy Siemens and I-T-E panelboards, specifically FC-1 panelboards and FC-20 switchboards.
What wire sizes and materials are accepted by the lugs on this breaker?
The factory lugs accept 14 AWG to 10 AWG copper or aluminum conductors.
Is the EF2B020 an I-T-E breaker?
Yes, the EF frame was originally manufactured by I-T-E before Siemens acquired the brand. It may be labeled as either Siemens or I-T-E depending on the production year, but the physical dimensions and mounting are identical.
What is the modern replacement for the EF2B020?
The legacy EF frame has been officially replaced by the ED frame. The direct modern equivalent for this 2-pole, 20-amp breaker is the ED62B020.
Can this breaker be used in DC applications?
Yes, it is rated for up to 250VDC with a maximum interrupting capacity of 10kA.
What is the trip unit configuration on the EF2B020?
It features a non-interchangeable thermal magnetic trip unit with fixed long time and fixed instantaneous trip functions.
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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.