Siemens / ITE ET5914 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Quantity
Siemens / ITE ET5914 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Delivering robust protection for commercial and industrial facilities, the Siemens ET5914 provides 150A of capacity across three poles. It features standard interrupting ratings and thermal-magnetic trip technology for reliable performance up to 600VAC. This legacy unit mount breaker integrates with older ITE and Siemens J-Frame panelboards, ensuring a precise fit for maintenance operations. When upgrading panel components, this exact replacement model crosses over to the modern JXD63B150.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | ET5914-R |
| Series | ET |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 22kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | ITE / Siemens J-Frame Panelboards |
| Wire Gauge | 4 AWG - 350 kcmil (Cu/Al) |
| Max Wire | 350 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, Alarm Switch |
|---|---|
| Accessories | Lugs Not Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Standard Interrupting Capacity |
Product FAQs
7 answersWhich panelboards are compatible with the ET5914 circuit breaker?
This unit mount breaker is designed for installation in legacy ITE and Siemens J-Frame panelboards.
What wire sizes are accepted by the lugs on the ET5914?
The terminal lugs accommodate both copper and aluminum conductors ranging from 4 AWG to 350 kcmil.
Are the trip settings on the ET5914 adjustable?
Yes, this thermal-magnetic breaker features a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
Can the ET5914 be used in DC electrical systems?
Yes, in addition to its standard AC ratings, this breaker is rated for up to 250VDC with an interrupting capacity of 10kA.
How does the ET5914 mount into the electrical panel?
It is a unit mount circuit breaker, meaning it bolts directly to the panelboard structure or mounting pan rather than plugging onto a bus bar.
Is the ET5914 manufactured by ITE or Siemens?
ITE was acquired by Siemens, so this breaker may be branded as either ITE or Siemens depending on the production year. Both versions share the exact same physical dimensions and electrical specifications.
Does the ET5914 provide ground fault or arc fault protection?
No, this is a standard thermal-magnetic circuit breaker designed for basic overload and short-circuit protection. It does not include GFCI or AFCI capabilities.
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