SIEMENS
SIEMENS B230 BL Series 30A 2 Pole 120/240V AC Circuit Breaker
A 30 A, two-pole miniature breaker rated 120/240 V AC with a 10 kA interrupting rating for Siemens P1 panelboards
- 30 A rating handles heavy-duty circuits
- 10 kA interrupting rating clears faults safely
- Bolt-on mounting secures to Siemens P1 panels
- Two-pole design protects both 120 V and 240 V lines
- Lug terminals accept 12 AWG aluminium or 14 AWG copper wire
SIEMENS BL Series 30 A breaker
The SIEMENS B230 is a bolt-on miniature circuit breaker rated 30 A at 120/240 V AC. It uses the BL series frame and fits single-phase P1 panelboards. The toggle actuator provides manual switching and the lug terminals accept 14 AWG copper or 12 AWG aluminium conductors.
Ideal for P1 panelboard circuits
This breaker suits electricians adding or replacing a 30 A two-pole branch circuit in a compatible Siemens load centre. It is not for panels that require a different mounting style or series, nor for applications needing a DC voltage rating or a higher interrupting capacity than 10 kA at 120/240 V AC.
30 A two-pole 120/240 V AC rating
The decisive specification is the 30 A, two-pole, 120/240 V AC rating combined with the BL series bolt-on mounting. Verify that the panelboard accepts BL series breakers and that the load does not exceed 30 A before installing.
Highlights
- 30 A rating handles heavy-duty circuits
- 10 kA interrupting rating clears faults safely
- Bolt-on mounting secures to Siemens P1 panels
- Two-pole design protects both 120 V and 240 V lines
- Lug terminals accept 12 AWG aluminium or 14 AWG copper wire
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
How is the bolt-on breaker installed in a Siemens P1 panelboard, and which step is often missed?
Align the breaker with the bus stabs, press firmly until it seats fully, then secure the mounting bolt; the step often missed is confirming the bolt is torqued so the breaker cannot rock on the bus.
What maintenance or replacement will this 30 A BL series breaker need over time?
No scheduled maintenance is required; replace the breaker if it trips repeatedly without overload, shows discoloration at the lug terminals, or fails to reset cleanly after a fault.
What limit appears first when the breaker carries 30 A continuously on a 120/240 V AC circuit?
The 10 kA interrupting rating is the first hard limit; sustained loads above 30 A will trip the thermal element, while a fault above 10 kA exceeds the breaker's ability to clear safely.
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