Square D QHB325 Miniature Circuit Breaker
- 25A
- 3 Pole
- Bolt-On
Quantity
Square D QHB325 - 25A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Part of the QO family, the QHB325 operates as a 3-pole, 25A miniature circuit breaker for commercial use. It provides essential long-time and instantaneous trip functions. The bolt-on mounting style ensures a rigid connection within Square D NQ panelboards. It features pressure plate terminals compatible with 14-8 AWG wire. With a 65 kAIC rating at 120/240VAC, this HACR-rated breaker offers superior fault protection. The Visi-Trip window clearly flags tripped conditions.Specifications
| Brand | Square D |
|---|---|
| Series | QHB |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 65kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| 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, Visual Trip Indicator, High Interrupting Capacity |
Product FAQs
6 answersCan I install the QHB325 in a standard QO load center?
No. The QHB325 is a bolt-on circuit breaker designed specifically for NQ panelboards. Standard QO load centers require plug-on breakers.
What is the difference between the QHB325 and the QOB325?
Both are 25A, 3-pole, bolt-on circuit breakers for NQ panelboards. The difference is the interrupting rating. The standard QOB325 is rated at 10kAIC, while the QHB325 is a high-interrupting breaker rated at 65kAIC at 120/240VAC.
Is the QHB325 HACR rated?
Yes. Square D QHB circuit breakers are HACR rated, making them suitable for group motor applications in heating, air conditioning, and refrigeration equipment.
Can the QHB325 be used in older NQOB panelboards?
No. According to Schneider Electric, QHB and QOB-VH breakers were not tested or approved for use in legacy NQOB panelboards. They are designed for use in modern NQ panelboards.
Does the QHB325 provide visual trip indication?
Yes. It features the Square D Visi-Trip indicator. When the breaker trips, the handle moves to a center position and a red indicator appears in the window to easily identify the tripped circuit.
Are QHB breakers suitable for seismic applications?
Yes. When installed in NQ panelboards, bolt-on breakers like the QHB325 meet the mechanical requirements for seismic certification, whereas standard plug-on breakers do not.
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