Siemens E43B025 Molded Case Circuit Breaker
- 25A
- 3 Pole
- Bolt-On
Quantity
Siemens E43B025 - 25A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the legacy E4 series, this 25-amp molded case circuit breaker delivers reliable long-time and instantaneous trip functions for commercial environments. It installs into Siemens Sentron panelboards, SB switchboards, and older ITE F-Series enclosures. Rated for 18kA interrupting capacity at 480VAC, the unit features a non-interchangeable trip unit and is HACR rated for HVAC equipment. Note that this specific frame has been superseded by the ED43B025 for newer installations.Specifications
| Brand | Siemens |
|---|---|
| Part Number | E43B025 |
| Series | E4 |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | E4 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, SB Switchboards, ITE F-Series Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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 Lugs (Factory Installed) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
5 answersWhich panelboards are compatible with the Siemens E43B025?
This bolt-on breaker is designed for use in Siemens Sentron Panelboards, SB Switchboards, and legacy ITE F-Series Panelboards.
What wire sizes and materials are accepted by the terminals on the E43B025?
The lugs on this breaker accept 14 to 10 AWG copper wire or 12 to 10 AWG aluminum wire.
Is the E43B025 rated for direct current (DC) applications?
Yes, this breaker is rated for use in DC systems up to 250VDC, where it provides an interrupting capacity of 30kA.
What type of protection is provided by the fixed thermal magnetic trip unit?
The thermal magnetic trip unit provides Long-Time (L) protection against sustained overloads and Instantaneous (I) protection against short circuits. Both settings are fixed and non-adjustable.
Can the Siemens E43B025 replace older ITE circuit breakers?
Yes, Siemens acquired ITE, and this E4 frame breaker serves as a direct replacement for older ITE E43B025 breakers used in F-Series panelboards.
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