Siemens BQ2B110H Molded Case Circuit Breaker
- 110A
- 2 Pole
- Bolt-On
Siemens
BQ2B110H
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQ2B110H
Quantity
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Siemens BQ2B110H - 110A 2 Pole Molded Case Circuit Breaker
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Description
Designed for modular meter centers, the Siemens BQ2B110H is a 2-pole, 110A molded case circuit breaker. It delivers reliable thermal-magnetic protection for 120/240V commercial electrical systems. This bolt-on breaker installs securely into Siemens meter centers and is fully compatible with legacy ITE panelboards. It serves as a direct substitute for the older HB2B110 part number. Featuring a 22 kAIC high-interrupting capacity, this common-trip breaker is HACR rated for HVAC applications.Specifications
| Brand | Siemens |
|---|---|
| Series | BQH |
| Amperage | 110A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Modular Meter Centers, Legacy ITE Panelboards |
| Wire Gauge | 2-1/0 AWG (Cu), 1/0-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu), 2/0 AWG (Al) |
| Min Wire | 2 AWG (Cu), 1/0 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Non-Interchangeable Trip, High Interrupting Capacity |
Product FAQs
7 answersWhich panelboards are compatible with the Siemens BQ2B110H?
This bolt-on breaker is designed for Siemens Modular Meter Centers and legacy ITE panelboards. It requires a bolted bus connection and will not fit in standard plug-on residential load centers.
What wire sizes and materials are approved for the BQ2B110H terminals?
The factory lugs accept 2 AWG to 1/0 AWG copper conductors, or 1/0 AWG to 2/0 AWG aluminum conductors. Always verify the torque specifications printed directly on the breaker label before terminating the wires.
What applications require the 22kAIC rating on this breaker?
The 22kAIC interrupting rating allows this breaker to safely clear higher fault currents than standard 10kAIC breakers. This is typically required in commercial facilities, industrial settings, or locations close to a utility transformer where available fault current is elevated.
Does the BQ2B110H include ground fault or arc fault protection?
No. This is a standard thermal-magnetic breaker featuring fixed long-time and instantaneous trip functions. It provides essential overload and short-circuit protection but does not contain GFCI or AFCI circuitry.
Can the BQ2B110H replace older ITE circuit breakers?
Yes. Because Siemens manufactures replacements for legacy ITE equipment, this BQ family breaker serves as a direct replacement for older ITE 110A, 2-pole, bolt-on breakers with matching dimensions and interrupting capacity.
Are the trip settings adjustable on the BQ2B110H?
No, the thermal-magnetic trip unit on this breaker is completely fixed. Both the long-time overload and instantaneous short-circuit pickup levels are factory set and cannot be adjusted in the field.
Can I install this breaker in a standard DIN rail enclosure?
No. The BQ2B110H is strictly a bolt-on breaker designed to mount directly to the busbars of compatible Siemens or ITE panelboards. It does not have the mounting hardware for DIN rail applications.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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2 reviews
- YRYoan R.Verified BuyerReviewingSiemens BQ2B125H - 125A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/19/26Best prices and quality 🫶
Best prices and quality 🫶
- JDJames D.ReviewingSiemens BQ2B030H - 30A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/13/17shop manager
thanks for the fast accurate service