Siemens / ITE EFC3M020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Unit Mount
Quantity
Siemens / ITE EFC3M020 - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for commercial power distribution, the Siemens EFC3M020 is a 3-pole, 20A molded case circuit breaker. It features a thermal-magnetic trip unit providing long-time and instantaneous (LI) protection. This legacy E-frame unit mounts into Siemens Sentron P1, P2, and P3 panelboards, as well as compatible switchboards. It serves as an exact fit for older systems and is officially replaced by the ED63A020.Specifications
| Brand | Siemens / ITE |
|---|---|
| Series | EFC |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 415VAC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 35kA @ 415VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards (Type P1, P2, P3), Enclosures, Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 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 | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | IEC Rated, 50C Ambient Calibration |
Product FAQs
5 answersWhich panelboards are compatible with the EFC3M020 circuit breaker?
This E-Frame breaker is designed for installation in Siemens Sentron Type P1, P2, and P3 panelboards. It can also be utilized in compatible Siemens switchboards and standalone enclosures.
What are the wire size and material requirements for the EFC3M020 lugs?
The factory lugs accept conductor sizes ranging from 14 AWG to 1/0 AWG. They are dual-rated for use with either copper or aluminum wiring, providing flexibility for field installations.
How does the interrupting capacity of the EFC3M020 change based on system voltage?
While the breaker carries a maximum interrupting rating of 35kA at 415VAC, the capacity is 18kA at 240VAC and 14kA at 480VAC. Verify that your system fault current does not exceed these limits at your specific operating voltage.
Are the trip settings adjustable on this Siemens E-Frame breaker?
No, the thermal-magnetic trip unit features fixed thermal and fixed magnetic settings. It provides standard long-time and instantaneous (LI) protection without field adjustability.
Is the EFC3M020 a current production model?
This model is classified as a legacy molded case circuit breaker within the Siemens E-Frame group. It is typically sourced for replacing existing units in older Sentron panels.
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