Siemens Q330HH Miniature Circuit Breaker
- 30A
- 3 Pole
- Plug-On
Quantity
Siemens Q330HH - 30A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Built for demanding commercial and industrial environments, this 30A miniature breaker offers maximum short-circuit defense. It mounts into Siemens load centers and panelboards, serving as an exact drop-in replacement for the legacy Murray MP330HH. Featuring an exceptional 65kAIC rating at 240VAC, the three-pole unit utilizes Insta-Wire technology and a common trip mechanism to ensure superior electrical safety.Specifications
| Brand | Siemens |
|---|---|
| Series | Q |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, Panelboards |
| Wire Gauge | 10-8 AWG (Cu), 10-6 AWG (Al) |
| Max Wire | 8 AWG (Cu), 6 AWG (Al) |
| Min Wire | 10 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Extra High Interrupting Capacity, Common Trip, Insta-Wire |
Product FAQs
6 answersWhat panels are compatible with the Siemens Q330HH circuit breaker?
The Q330HH is a Type HQP plug-on breaker designed for use in Siemens 3-phase load centers and panelboards that accept QP-frame breakers, including PL and ES series panels. It is also backward compatible with older I-T-E and Murray panels that list Type HQP or QP breakers.
What does the HH in the Q330HH catalog number indicate?
The HH designates it as a Type HQP high-interrupting circuit breaker. It features a 65kAIC rating at 240V, which provides significantly higher fault current protection compared to standard 10kAIC Type QP or 22kAIC Type QPH breakers.
What is the recommended wire size and torque for the Q330HH terminals?
The lugs accept 10 to 8 AWG copper or 10 to 6 AWG aluminum wire. For 10 AWG wire, torque the terminals to 25 lb-in. For 8 AWG, use 40 lb-in, and for 6 AWG aluminum, tighten to 45 lb-in. Always verify exact torque requirements on the breaker label.
Can the Q330HH replace older I-T-E or Gould 3-pole breakers?
Yes, Siemens Type HQP breakers are direct replacements for legacy I-T-E, Gould, and Murray 3-pole plug-on breakers with the same frame size and interrupting requirements. Ensure your panel label lists Type HQP, QPH, or QP as an acceptable branch breaker.
Does this 3-pole breaker require a hold-down kit?
A hold-down kit is only required if the Q330HH is being used as a back-fed main breaker in a load center. When installed as a standard branch breaker, it simply plugs onto the bus bar without additional securing hardware.
Can I use the Q330HH in a single-phase residential panel?
No. The Q330HH is a 3-pole breaker designed specifically for 3-phase electrical systems. It will not fit properly or function correctly in a standard single-phase 120/240V residential load center.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 48 reviews.
- DTDawn T.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/8/26Timely
This is exactly what I was looking for! Worked perfectly, arrived promptly, no hassles.
- 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