Siemens Q320HH Miniature Circuit Breaker
- 20A
- 3 Pole
- Plug-On
Quantity
Siemens Q320HH - 20A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Delivering robust 65kAIC interrupting capacity, this three-pole 20-amp component is built for demanding commercial and industrial applications. It features Insta-Wire connections for faster installation and carries an HACR rating for HVAC equipment compatibility. Designed to mount into standard Siemens load centers and panelboards, it provides reliable long-time and instantaneous trip functions. The plug-on design ensures a secure fit without the need for bolted connections.Specifications
| Brand | Siemens |
|---|---|
| Series | Q |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Panelboards, Siemens Load Centers |
| Wire Gauge | 14-6 AWG (Cu), 14-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Insta-Wire, Common Trip |
Product FAQs
6 answersWhat types of panels are compatible with the Siemens Q320HH?
The Q320HH is designed for use in Siemens load centers and panelboards that accept QP-type plug-on circuit breakers.
What does the HH signify in the Q320HH catalog number?
The HH suffix indicates a high interrupting rating of 65kAIC at 240VAC. This provides greater fault protection compared to the standard Q320 at 10kAIC or the Q320H at 22kAIC.
How much panel space does this 3-pole breaker require?
The Q320HH requires three standard 1-inch spaces, taking up a total width of 3 inches in your load center or panelboard.
Can the Q320HH replace a standard Q320 or Q320H breaker?
Yes. The Q320HH shares the exact same physical footprint and plug-on mounting style as the Q320 and Q320H. It can serve as a direct replacement when a higher 65kAIC interrupting rating is specified by an engineer or local code.
Is the Siemens Q320HH approved for HVAC applications?
Yes, this breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment requiring a 20A, 3-pole circuit.
What wire sizes are accepted by the lugs on the Q320HH?
The breaker terminals are designed to accept 14 AWG to 6 AWG copper or aluminum conductors. Ensure proper torque specifications are followed during installation.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 47 reviews.
- CGCrocefissa G.Verified BuyerReviewingSiemens Q115 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Quick delivery and great price.
The circuit breakers are at a great cost.
- JBJason B.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Great experience
The product was exactly what I needed and it arrived on time.
- DQDon Q.Verified BuyerReviewingSiemens Q3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/14/26Siemens breaker
Great customer experience, great prices and fast shipping... Definitely will be buying her again.
- CSChristopher S.Verified BuyerRated 5 out of 5 stars8/12/26Siemens 60
Perfect new condition
- GSGeorge S.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/4/26Great service
Every time I call or go online you have the parts I'm looking for.