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Siemens Q212500S01 Miniature Circuit Breaker
- 125A
- 2 Pole
- Plug-On
Siemens
Q212500S01
Miniature Circuit Breaker
Brand
Siemens
SKU
Q212500S01
Quantity
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Siemens Q212500S01 - 125A 2 Pole Miniature Circuit Breaker
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Description
Featuring a factory-installed 120VAC shunt trip, this 125-amp device allows for remote power disconnection in commercial and industrial applications. The thermal-magnetic unit fits standard Siemens load centers and serves as an exact cross-reference for legacy Murray MP2125ST installations. Utilizing Insta-Wire technology for faster connections, it accepts 4-2/0 AWG copper or aluminum wiring. This HACR-rated component delivers reliable 10kAIC protection with common trip functionality.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q212500S01 |
| Series | QP |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, Siemens Panelboards |
| Wire Gauge | 4-2/0 AWG (Cu/Al) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Factory Installed Shunt Trip (120VAC) |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
Product FAQs
5 answersDoes the Q212500S01 include a shunt trip mechanism?
Yes, the 00S01 catalog suffix indicates that this breaker comes equipped with a factory-installed 120V AC shunt trip, which allows for remote power disconnection.
Is the Q212500S01 a suitable replacement for the Murray MP2125ST?
Yes, Siemens manufactures this QP series breaker as the direct cross-reference replacement for the legacy Murray MP2125ST.
Can I install the Q212500S01 in a bolt-on panelboard?
No, this Q-frame breaker features a plug-in connection type and is specifically designed for Siemens load centers and panelboards that accept plug-on miniature circuit breakers.
Are the trip settings adjustable on this 125A breaker?
No, the Q212500S01 features a fixed thermal-magnetic trip unit with non-adjustable long-time and instantaneous trip functions.
What type of wire is compatible with the lugs on the Q212500S01?
The load side lugs are rated for both copper and aluminum conductors, accepting wire sizes from 4 AWG up to 2/0 AWG.
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