Square D QHB330 Miniature Circuit Breaker
- 30A
- 3 Pole
- Bolt-On
Quantity
Square D QHB330 - 30A 3 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Square D QHB330 - 30A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | QHB330 |
| Series | QHB |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 65kA @ 120/240VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | NQ Panelboards |
| Wire Gauge | 14-8 AWG (Al/Cu) |
| Max Wire | 8 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, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Visual Trip Indicator, Common Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Quantity
Square D QHB330 - 30A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Series | QHB |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 65kA @ 120/240VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | NQ Panelboards |
| Wire Gauge | 14-8 AWG (Al/Cu) |
| Max Wire | 8 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, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Visual Trip Indicator, Common Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Description
Delivering reliable thermal-magnetic protection, the QHB330 functions as a 3-pole, 30A circuit breaker from Square D. It safeguards commercial electrical systems. This unit features a secure bolt-on design for installation into NQ panelboards. The pressure plate terminals accommodate 14-8 AWG conductors for flexible wiring. Capable of interrupting 65 kAIC at 120/240VAC, it meets rigorous safety standards. The signature Visi-Trip indicator provides immediate visual confirmation of a trip.Specifications
| Brand | Square D |
|---|---|
| Series | QHB |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 65kA @ 120/240VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | NQ Panelboards |
| Wire Gauge | 14-8 AWG (Al/Cu) |
| Max Wire | 8 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, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Visual Trip Indicator, Common Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
5 answersWhich panelboards accept the Square D QHB330 circuit breaker?
The QHB330 is a bolt-on miniature circuit breaker designed specifically for use in Square D NQ panelboards. Because of its bolt-on mounting style, it is not compatible with standard QO plug-on load centers.
What is the difference between a QOB330 and a QHB330?
The primary difference is the interrupting rating. The standard QOB330 has a 10kAIC rating, whereas the QHB330 is a high-interrupting breaker rated at 65kAIC at 120/240VAC. Both are 30A, 3-pole, bolt-on breakers that fit the same NQ panelboards.
What wire gauge and material can be used with the QHB330?
The pressure plate terminals on the QHB330 are designed to accept 14 AWG to 8 AWG copper (Cu) or aluminum (Al) conductors.
Does the QHB330 include a Visi-Trip indicator?
Yes, this breaker features the Square D Visi-Trip indicator. When the breaker trips, the handle moves to a center position and a highly visible red flag appears in the window, making it easy to identify the tripped circuit in a crowded panel.
Is the QHB330 suitable for HVAC equipment?
Yes, this thermal-magnetic circuit breaker is HACR rated, making it suitable for group installation with heating, air conditioning, and refrigeration equipment that requires inverse-time overcurrent protection.
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