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Siemens HGB2B090B Molded Case Circuit Breaker
- 90A
- 2 Pole
- Bolt-On
Siemens
HGB2B090B
Molded Case Circuit Breaker
Brand
Siemens
SKU
HGB2B090B
Quantity
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Siemens HGB2B090B - 90A 2 Pole Molded Case Circuit Breaker
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Description
Delivering dependable power distribution, this 90A molded case circuit breaker utilizes fixed thermal and magnetic trip elements. It carries a HACR rating and handles up to 35kA at 480Y/277VAC, making it ideal for demanding industrial environments. The device fastens into Siemens P1, P2, and P3 panelboards via a secure bolt-on mounting style. It accepts 8-1/0 AWG copper or 8-2/0 AWG aluminum wire. When upgrading, facilities can transition to the 3VA4190-5ED24-0AA0 using an xGB/3VA strap kit.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HGB2B090B |
| Series | HGB |
| Amperage | 90A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC, 35kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 42kA @ 125/250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 8-1/0 AWG (Cu), 8-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu), 2/0 AWG (Al) |
| 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, Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, High Interrupting Capacity |
Product FAQs
7 answersWhich panelboards are compatible with the Siemens HGB2B090B circuit breaker?
The HGB2B090B is a bolt-on molded case circuit breaker designed specifically for use in Siemens P1, P2, and P3 panelboards.
What is the difference between Siemens NGB and HGB circuit breakers?
Both belong to the Siemens xGB family of molded case circuit breakers and share the same physical footprint. The HGB series features a higher interrupting capacity compared to the standard NGB series.
What wire sizes are accepted by the lugs on the HGB2B090B breaker?
The factory-installed lugs accept 8 to 1/0 AWG copper wire or 8 to 2/0 AWG aluminum wire.
Can the Siemens HGB2B090B be used in reverse feed applications?
Yes, this thermal-magnetic molded case circuit breaker is suitable for reverse feed applications.
Is the HGB2B090B rated for use in DC electrical systems?
Yes, this breaker is rated for DC applications, providing an interrupting capacity of 42kA at 125 or 250V DC.
Are the trip settings adjustable on the HGB2B090B?
No, this breaker features a fixed thermal and fixed magnetic trip unit with standard Long-Time and Instantaneous (LI) protection functions.
Can I install this Siemens breaker in a panelboard from another manufacturer?
No. The HGB2B090B is UL listed specifically for use in compatible Siemens panelboards. Installing it in a different brand's panelboard violates the UL listing and can create a severe fire hazard.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
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2 reviews
- CSCody S.Verified BuyerReviewingSiemens HGB3B020B - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars12/1/25I love SuperBreakers
Excellent shipping time and everything works perfectly
- JMJessica M.ReviewingSiemens HGB3B020B - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/16/23works as intended
works as intended