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Siemens Q320H Miniature Circuit Breaker
- 20A
- 3 Pole
- Plug-On
Siemens
Q320H
Miniature Circuit Breaker
Brand
Siemens
SKU
Q320H
Quantity
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Siemens Q320H - 20A 3 Pole Miniature Circuit Breaker
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Description
Part of the QPH series, the Siemens Q320H is a 3-pole, 20-amp miniature circuit breaker designed for commercial and industrial environments. It delivers robust thermal-magnetic protection for 240V systems. This breaker installs into Siemens, Murray, EQ, PL, and ES load centers using a plug-on mount. It functions as a direct substitute for the legacy Murray MP320H.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q320H |
| Series | QPH |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, Murray Load Centers, EQ Load Centers, PL Load Centers, ES Load Centers, Ultimate Load Centers |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment, Handle Tie |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, HACR Rated, Insta-Wire |
Product FAQs
5 answersCan I install the Siemens Q320H in a Murray load center?
Yes. Siemens QPH breakers, including the Q320H, are compatible with Murray load centers, as well as Siemens EQ, PL, ES, and Ultimate load centers.
What is the difference between Siemens QP and QPH circuit breakers?
The primary difference is the interrupting rating. Siemens QPH breakers like the Q320H feature a 22kAIC rating, whereas standard QP breakers are rated for 10kAIC. Both share the same physical dimensions and plug-on design.
Is the Siemens Q320H HACR rated?
Yes, this breaker is HACR rated, making it suitable for protecting heating, air conditioning, and refrigeration equipment.
Can the Q320H replace older ITE or Gould circuit breakers?
Yes. Siemens acquired ITE, and the Q320H serves as a direct replacement for older ITE and Gould 3-pole, 20-amp plug-in breakers with the same Q frame type.
How much panel space does the Q320H require?
As a full-size 3-pole breaker, the Q320H requires three standard 1-inch spaces in a compatible load center. It does not use tandem slots.
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