Eaton / Cutler-Hammer GB2090 Molded Case Circuit Breaker
- 90A
- 2 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer GB2090 - 90A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed for commercial power distribution, the Eaton GB2090 90A, 2-pole molded case circuit breaker functions within the Series C family. It utilizes fixed thermal-magnetic trip units to provide consistent LI protection. This G-Frame breaker installs into Eaton Pow-R-Line and Series C panelboards. The bolt-on mounting style guarantees a secure connection, and it serves as a direct cross-reference for the GHB2090 substitute.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GB2090 |
| Series | GB |
| Amperage | 90A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Pow-R-Line Panelboards, Eaton Series C Panelboards |
| Wire Gauge | 8-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included, Mounting Hardware |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
6 answersWhat is the difference between the Eaton GB2090 and GHB2090?
The primary difference is the maximum voltage rating. The GB2090 is rated for 240V AC, while the GHB2090 is rated for up to 277/480Y V AC. Both are Series C G-frame breakers and share the exact same physical footprint and panelboard compatibility.
Are Westinghouse, Cutler-Hammer, and Eaton GB2090 breakers interchangeable?
Yes. Eaton acquired the Westinghouse electrical distribution division and later transitioned the Cutler-Hammer brand into Eaton. A GB2090 breaker labeled by any of these three brands is the exact same component and is fully interchangeable.
What is required to install the GB2090 in an Eaton Pow-R-Line panelboard?
Installing this G-frame breaker into a Pow-R-Line panelboard typically requires a dedicated panelboard connector kit, such as the KPRL3AGB06 for twin mounting. These kits provide the necessary phase connectors and hardware for a secure bolt-on connection to the panel bus.
Is the GB2090 rated for DC applications?
Yes, 2-pole GB breakers like the GB2090 are rated for up to 125/250 Vdc maximum. Because DC interrupting ratings differ from AC ratings, you must verify the specific DC fault current requirements of your system before installation.
What does the LI trip function on the GB2090 indicate?
The LI designation means this thermal-magnetic breaker features fixed Long-Time (thermal) and fixed Instantaneous (magnetic) trip functions. The thermal element protects against sustained overloads, while the magnetic element provides immediate tripping during short circuits.
What does the 65 kAIC rating mean for the GB2090?
The 65 kAIC rating indicates that the breaker can safely interrupt up to 65,000 amps of fault current at 240V AC without sustaining internal damage. This high interrupting capacity makes it suitable for commercial and industrial systems with high available fault currents.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.