Siemens G3B090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Siemens
G3B090
Molded Case Circuit Breaker
Brand
Siemens
SKU
G3B090
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens G3B090 - 90A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
90A 3 Pole Molded Case Circuit Breaker
90A 3 Pole Molded Case Circuit Breaker
90A 3 Pole Molded Case Circuit Breaker
Description
Engineered for heavy-duty commercial use, the Siemens G3B090 is a 90A, 3-pole molded case circuit breaker. It delivers reliable thermal-magnetic overcurrent protection with fixed long-time and instantaneous (LI) functions. Designed for bolt-on installation, this GB frame breaker mounts into Siemens P1, P2, and P3 panelboards. It includes load side lugs and accommodates 8-1/0 AWG wire. It is replaced by the NGB3B090. With 65kA at 240VAC and 25kA at 480VAC, it provides excellent fault clearing.Specifications
| Brand | Siemens |
|---|---|
| Series | GB |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480Y/277VAC, 25kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 8-1/0 AWG (Cu/Al) |
| 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, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1, IEC 60947-2 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Trip-Free Mechanism |
Product FAQs
5 answersAre Siemens and ITE G3B090 breakers the exact same component?
Yes. Siemens acquired the ITE electrical line, and the G3B090 catalog number has been retained. An older ITE label and a newer Siemens label represent the exact same GB frame breaker.
Which Siemens panelboards are compatible with the G3B090?
This Sentron series GB frame breaker is designed for bolt-on installation in Siemens P1, P2, and P3 distribution panelboards.
Is the G3B090 suitable for direct current applications?
Yes, in addition to standard AC ratings, this thermal magnetic breaker is rated for DC systems up to 250VDC with a 14kA interrupting capacity.
What conductor materials are supported by the G3B090 lugs?
The standard factory lugs on this breaker are dual-rated for both copper and aluminum wiring, accepting conductor sizes from 8 AWG up to 1/0 AWG.
What safety precautions are required before installing this breaker?
Always completely de-energize the panelboard before installing or servicing the breaker. Verify that power is disconnected using a properly rated voltage sensing device to prevent shock and arc flash hazards.
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.