Siemens / ITE ET225-3175 Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
Quantity
Siemens / ITE ET225-3175 - 175A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
A dependable choice for facility maintenance, this 175A, 3-pole molded case circuit breaker restores functionality to older electrical systems. It eliminates the need for extensive retrofitting by matching the original hardware footprint perfectly. Designed for unit mounting, the ET225-3175 fits seamlessly into legacy ITE and Siemens panelboards. Facilities upgrading their panels often transition to the QJ23B175 substitute. This 600VAC breaker includes an adjustable magnetic trip mechanism.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | ET225-3175-R |
| Series | ET |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | ITE / Siemens Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Standard Interrupting Capacity |
Product FAQs
5 answersWhich panelboards are compatible with the ET225-3175 circuit breaker?
This unit-mount breaker is designed to fit seamlessly into legacy ITE and Siemens panelboards. It matches the original hardware footprint, which helps eliminate the need for extensive retrofitting during facility maintenance.
What wire gauge is accepted by the lugs on the ET225-3175?
The terminals accept copper or aluminum (Cu/Al) conductors ranging from 4 AWG to 300 kcmil, providing flexibility when wiring 175A circuits in legacy panelboards.
How does the trip unit on the ET225-3175 operate?
It features a thermal-magnetic trip unit with fixed thermal and adjustable magnetic settings. This allows electricians to fine-tune the instantaneous magnetic trip response while maintaining fixed long-time (LI) overload protection.
What is a common substitute for the ET225-3175 when upgrading panelboards?
Facilities upgrading their legacy ITE or Siemens panels often transition to the QJ23B175 as a substitute. Electricians should verify voltage requirements, as the QJ23B175 is rated for 240VAC applications.
Can the ET225-3175 be used in DC electrical systems?
Yes, in addition to its AC ratings, this breaker is rated for use in DC systems up to 250VDC, delivering an interrupting capacity of 10kA. This makes it suitable for specific industrial DC applications.
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