Part of the CHB series, this 90A two-pole miniature circuit breaker offers dependable power distribution for commercial facilities. It utilizes standard long-time and instantaneous (LI) trip functions to guard against electrical overcurrents. The bolt-on configuration ensures a rigid, secure connection when installed into Cutler-Hammer Type PB panelboards, PH panelboards, and meter panels. Delivering a 10kAIC rating at 120/240VAC, the breaker features a built-in Visi-Trip indicator.
Cutler-Hammer Type PB Panelboards, Type PH Panelboards, Meter Panels
Wire Gauge
4-1/0 AWG
Max Wire
1/0 AWG
Min Wire
4 AWG
Protection and operation
Trip Technology
Thermal Magnetic
Trip Function Code
LI
Trip Function
Long-Time, Instantaneous
Trip Adjustability
Fixed
Standards and features
Available Options
Handle Lock
Standards
CSA C22.2 No. 5, Federal Specification W-P-131a, UL 489
Approval
CSA, UL
Temp Rating
40C
Construction Features
HACR Rated, Common Trip
Product FAQs
5 answers
Which panelboards accept the CHB290 circuit breaker?
This bolt-on breaker is specifically engineered for Cutler-Hammer Type PB and Type PH panelboards, along with compatible meter panels and multi-metering modules.
Are Eaton CH and CHB circuit breakers interchangeable?
No. While they share the same internal components and accessories, Type CH breakers are plug-on, whereas Type CHB breakers feature a specialized cradle for bolt-on installation in PB and PH panelboards.
Is the CHB290 suitable for HVAC applications?
Yes, the CHB series is HACR rated, meaning it is tested and approved for use with heating, air conditioning, and refrigeration equipment.
Do standard CH handle locks fit the CHB290?
Yes. Because the CHB breaker utilizes the standard CH frame within a bolt-on cradle, it accepts the same handle locks and accessories as standard CH plug-on breakers.
How does the trip mechanism operate on the 2-pole CHB290?
It utilizes a thermal-magnetic trip unit with an internal common trip connection. This ensures that an overcurrent or short circuit on either leg will simultaneously open both poles, disconnecting all ungrounded conductors.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 4 reviews.