Designed for commercial power distribution networks, this 90-amp Siemens breaker offers an upgraded 22kAIC interrupting capacity for environments requiring higher fault tolerance. It mounts firmly into Siemens modular meter centers as well as older ITE panelboard configurations. The thermal-magnetic unit utilizes a non-interchangeable trip design and includes standard load side lugs, making it a reliable choice for demanding 120/240VAC industrial applications.
Siemens Modular Meter Centers, Legacy ITE Panelboards
Wire Gauge
8-1 AWG (Cu), 6-1/0 AWG (Al)
Max Wire
1 AWG (Cu), 1/0 AWG (Al)
Min Wire
8 AWG (Cu), 6 AWG (Al)
Protection and operation
Trip Technology
Thermal Magnetic
Trip Function Code
LI
Trip Function
Long-Time, Instantaneous
Trip Adjustability
Fixed
Standards and features
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
5 answers
What type of panelboards accept the BQ2B090H circuit breaker?
This bolt-on breaker is designed for use in Siemens Modular Meter Centers and legacy ITE panelboards. It requires a compatible bolt-on busbar configuration and will not fit in standard plug-on load centers.
What is the difference between the Siemens BQ2B090 and the BQ2B090H?
The standard BQ2B090 has an interrupting rating of 10kAIC, while the BQ2B090H features a higher interrupting capacity of 22kAIC at 240V. Both share the same physical dimensions and bolt-on mounting style.
Can I use the BQ2B090H to replace an older ITE brand breaker?
Yes. Siemens acquired ITE, and modern Siemens BQ frame breakers are direct replacements for legacy ITE bolt-on breakers of the same frame size and specifications.
Is the Siemens BQ2B090H rated for use with heating and air conditioning equipment?
Yes, this breaker is HACR rated. It is suitable for protecting heating, air conditioning, and refrigeration circuits that require a 90-amp, 2-pole configuration.
How does the BQ2B090H connect to the panel busbar?
It uses a bolt-on connection, meaning it must be physically screwed into the panelboard busbar. This provides a secure, high-torque connection commonly required in commercial lighting panels and meter centers, unlike standard plug-on residential breakers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.