Siemens / ITE F3B030 Molded Case Circuit Breaker
- 30A
- 3 Pole
- Bolt-On
Quantity
Siemens / ITE F3B030 - 30A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
A drop-in replacement for aging infrastructure, the Siemens F3B030 is a 3-pole, 30A molded case circuit breaker from the legacy F-Frame family. It installs into ITE and Siemens E-Frame panelboards to restore safe power distribution in commercial and industrial environments. The breaker features a non-interchangeable thermal-magnetic trip unit with a 25kAIC rating at 240VAC. When transitioning to current-generation hardware, the ED63B030 serves as the recommended substitute.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | F3B030-R |
| Series | F3B |
| Amperage | 30A |
| 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 | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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
7 answersWhich panelboards accept the F3B030 circuit breaker?
This F-frame breaker is specifically designed for bolt-on installation in legacy ITE and Siemens E-Frame panelboards.
What wire sizes are compatible with the factory lugs on the F3B030?
The standard lugs accommodate 14 AWG through 1/0 AWG conductors and are rated for both copper and aluminum wiring, giving installers flexibility during installation.
How is the F3B030 secured to the panelboard bus?
It features a bolt-on mounting design, which requires bolting the breaker directly to the busbars. This provides a highly secure, vibration-resistant connection compared to plug-in alternatives.
Can the F3B030 be utilized in DC electrical systems?
Yes, while primarily used in AC systems up to 600VAC, this breaker is also rated for 250VDC applications with a 10kA interrupting capacity.
Are the trip parameters on the F3B030 adjustable?
No, this breaker is built with fixed thermal and fixed magnetic trip elements. It provides standard long-time and instantaneous (LI) protection without field adjustability.
What type of fault protection does the F3B030 provide?
It utilizes a thermal-magnetic trip unit to deliver comprehensive protection. The thermal element responds to prolonged overloads, while the magnetic element trips instantaneously in the event of a short circuit.
Is the F3B030 still actively manufactured by Siemens?
This specific F-frame model is part of the legacy molded case circuit breaker family originally produced by ITE and Siemens, making it a direct replacement for existing installations.
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