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Siemens / ITE CF3B030 Molded Case Circuit Breaker
- 30A
- 3 Pole
- Bolt-On
Siemens / ITE
CF3B030
Molded Case Circuit Breaker
Brand
Siemens / ITE
SKU
CF3B030
Quantity
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Siemens / ITE CF3B030 - 30A 3 Pole Molded Case Circuit Breaker
Re-Certified
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Description
A drop-in solution for aging infrastructure, this 30A current-limiting breaker provides essential long-time and instantaneous trip functions. It handles up to 600VAC in commercial power networks. Designed with a bolt-on mounting style, it fits perfectly into legacy Siemens C-Frame panelboards. Facility managers can use this exact replacement to maintain older systems, while the CED63B030 serves as the newer cross-reference. The integration of Amp-Trap fuses allows a 200kAIC rating at 480V.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | CF3B030-R |
| Series | CF |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 100kA @ 600VAC, 100kA @ 250VDC |
| Frame Type | CF |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (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 |
|---|---|
| Accessories | Amp-Trap Current Limiters, Line and Load Lugs Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Integral Amp-Trap Fuses, High Interrupting Capacity |
| Special Features | Current Limiting (Integrally Fused) |
Product FAQs
6 answersWhat is the modern replacement for the legacy CF3B030 circuit breaker?
The CED63B030 is the direct modern cross-reference for this legacy C-Frame breaker, offering equivalent ratings for panelboard upgrades.
Which older Siemens and ITE panelboards accept this C-Frame breaker?
This bolt-on MCCB is designed as a drop-in replacement for legacy Siemens and ITE panelboards, including the FC-20 and CDP-6 series.
How does the CF3B030 achieve its current limiting rating?
It utilizes integral fuses to clear faults extremely fast, drastically reducing let-through energy to protect downstream equipment. This design allows the breaker to achieve a 200kAIC rating at 480VAC.
Can the CF3B030 be reverse fed?
Yes. Because it is built with a non-interchangeable thermal magnetic trip unit and lacks specific line and load directional restrictions, it can be safely reverse fed in applications that require backfeeding.
Can the trip curve be adjusted in the field?
No, this breaker is built with a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous functions are factory set and non-interchangeable.
Is this breaker suitable for DC applications?
Yes, the CF3B030 is rated for use on 250VDC systems, providing up to 100kA of interrupting capacity for direct current networks.
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