The Siemens ED43B020 is a Sentron molded case circuit breaker designed for reliable low-voltage power distribution. Operating as a Type ED4 breaker within the ED frame series, it provides thermal-magnetic trip protection for standard applications. This 3-pole breaker delivers a 20 Amp rating and is rated for use up to 480V AC or 250V DC. It offers an interrupting capacity of 18 kA at 480V, ensuring safety under fault conditions. Key mechanical features include load lug connections that accept 14-10 AWG copper or 12-10 AWG aluminum wire, and it is calibrated for a standard 40°C operating environment. This breaker is typically utilized in commercial panelboards and distribution enclosures. Please confirm panel compatibility, condition, source, availability, and lead time in the written quote before making a final selection.
Application context: This breaker is designed for low-voltage commercial panelboards and distribution equipment.
Primary technical source for ED43B020 | Supporting documentation
The Siemens ED43B020 is a Sentron molded case circuit breaker designed for reliable low-voltage power distribution. Operating as a Type ED4 breaker within the ED frame series, it provides thermal-magnetic trip protection for standard applications. This 3-pole breaker delivers a 20 Amp rating and is rated for use up to 480V AC or 250V DC. It offers an interrupting capacity of 18 kA at 480V, ensuring safety under fault conditions. Key mechanical features include load lug connections that accept 14-10 AWG copper or 12-10 AWG aluminum wire, and it is calibrated for a standard 40°C operating environment. This breaker is typically utilized in commercial panelboards and distribution enclosures. Please confirm panel compatibility, condition, source, availability, and lead time in the written quote before making a final selection.
| Specification | Value |
|---|---|
| Amperage | 20 A |
| Voltage | 480V AC / 250V DC |
| Poles | 3 |
| Interrupting Rating | 18 kA at 480V |
| Trip Type | Thermal-Magnetic |
| Frame | ED |
| Wire Size | 14-10 AWG (Cu) / 12-10 AWG (Al) |
| Temperature Rating | 40°C |
This breaker is designed for low-voltage commercial panelboards and distribution equipment. Match the physical nameplate, panel label, mounting method, electrical ratings, and manufacturer instructions before purchase or installation.
Siemens ED43B020 catalog record. Call (951) 903-9804 to request a written quote confirming the nameplate, ratings, mounting, condition, source, availability, lead time, shipping method, warranty, and compatibility requirements.
Brand: Siemens | Catalog Number: ED43B020 | Series: ED4 E-Frame