Siemens / ITE F3B090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Quantity
Siemens / ITE F3B090 - 90A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered to support aging infrastructure, this 90A Siemens MCCB delivers reliable thermal-magnetic protection for 3-phase commercial applications. The bolt-on design integrates seamlessly into legacy ITE and Siemens E-Frame panelboards. Functioning as a direct replacement for the ED63B090, it restores system safety without requiring panel modifications. It features a 25kAIC interrupting capacity at 240V, HACR certification, and a durable non-interchangeable trip unit.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | F3B090-R |
| Series | F3B |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | ITE / Siemens E-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, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
5 answersWhich panelboards accept the F3B090 circuit breaker?
This legacy bolt-on breaker is specifically designed for installation in compatible ITE and Siemens E-Frame panelboards.
Does the F3B090 use an F-Frame or E-Frame footprint?
The F3B090 is classified as an F-Frame molded case circuit breaker, but it is specifically configured for use within legacy ITE and Siemens E-Frame panelboards.
How does the LI trip function operate on the F3B090?
The thermal-magnetic trip unit provides two levels of protection. The long-time (L) thermal element responds to sustained overloads, while the instantaneous (I) magnetic element trips the breaker immediately during severe short circuits.
Can this breaker replace older ITE F3B090 models?
Yes, this is an authentic Siemens and ITE component that serves as a direct replacement for aging 90A F3B series breakers, allowing you to maintain existing panels without a full retrofit.
Can the F3B090 be used in 250VDC control circuits?
Yes, the F3B090 is rated for direct current applications up to 250VDC, providing a 10 kAIC interrupting capacity for industrial DC control and distribution systems.
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