Square D QOH2100 Miniature Circuit Breaker
- 100A
- 2 Pole
- Plug-On
Quantity
Square D QOH2100 - 100A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Built to manage extreme fault conditions, this 100-amp plug-on breaker features an ultra-high 42kA interrupting capacity at 120/240V. It installs quickly into standard Square D QO load centers, NQ panelboards, and Speed-D switchboards without requiring specialized mounting hardware. The thermal-magnetic trip mechanism provides reliable overload and short-circuit defense for heavy residential or commercial loads. A built-in Visi-Trip window allows users to spot tripped circuits instantly.Specifications
| Brand | Square D |
|---|---|
| Series | QOH |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 42kA @ 120/240VAC |
| Frame Type | QO |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | NQ Panelboards, NQOD Panelboards, QO Load Centers, Speed-D Switchboards |
| Wire Gauge | 4 AWG-2/0 AWG (Al/Cu) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 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, Federal Specification W-C-375B/GEN, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, High Interrupting Capacity, Common Trip, Trip-Free Mechanism, Quick-Make/Quick-Break, RoHS Compliant |
Product FAQs
5 answersWhat panels accept the QOH2100, and how much space does it take?
This plug-on breaker requires two standard spaces and is compatible with Square D QO load centers, NQ and NQOD panelboards, as well as Speed-D switchboards.
Can the QOH2100 replace a standard QO2100 breaker?
Yes. The QOH2100 shares the exact same physical footprint and plug-on mounting as the standard QO2100. It serves as a direct replacement or upgrade for applications requiring a higher 42kAIC interrupting rating.
What does the H in the QOH2100 part number indicate?
The H designates a high interrupting rating. This breaker is engineered to safely interrupt up to 42,000 amps of fault current (42kAIC), making it suitable for commercial or heavy residential applications where a standard 10kAIC breaker is insufficient.
Does this breaker include a tripped circuit indicator?
Yes, it features the Square D Visi-Trip window. When the breaker trips due to an overload or short circuit, a red indicator flag appears in the window to help you quickly identify the faulted circuit.
Is the QOH2100 suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires motor group combination protection.
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