Free Shipping Over $99
Siemens HE43B090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Siemens
HE43B090
Molded Case Circuit Breaker
Brand
Siemens
SKU
HE43B090
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens HE43B090 - 90A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
100A 3 Pole Molded Case Circuit Breaker
70A 3 Pole Molded Case Circuit Breaker
60A 3 Pole Molded Case Circuit Breaker
Description
Built for heavy-duty applications, the Siemens HE43B090 delivers 90A of thermal-magnetic protection across three poles. Operating at up to 480VAC, this E-Frame breaker features a 25kAIC rating at 480V and 65kAIC at 240V, making it ideal for robust commercial environments. Designed for secure integration, it bolts into Siemens P1, P2, and P3 panelboards, along with legacy ITE systems. When modernizing equipment, note that this specific frame is replaced by the HED43B090.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HE43B090 |
| Series | HE |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC |
| Frame Type | HE4 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, ITE Panelboards |
| Wire Gauge | 10-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 10 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, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip, Reverse Feed, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
6 answersWhat is the modern replacement for the HE43B090?
When modernizing equipment or replacing older units, the Siemens HED43B090 serves as the direct modern cross-reference for this legacy E-frame breaker. It maintains the same 90A rating and bolt-on configuration.
Can I install the HE43B090 in an older ITE panelboard?
Yes. Because Siemens acquired ITE, this E-frame breaker is fully compatible with legacy ITE panelboards that require bolt-on branch breakers. It also fits modern Siemens P1, P2, and P3 distribution panels.
Can the HE43B090 be applied in systems with high available fault currents?
Yes. While rated for 25kAIC at 480VAC, this breaker can safely interrupt up to 65kAIC when applied in 240VAC systems, providing flexibility for commercial installations with varying fault current requirements.
Are the lugs on the HE43B090 rated for aluminum wire?
Yes. The factory-installed lugs are dual-rated for both copper and aluminum conductors. They accept wire sizes ranging from 10 AWG up to 1/0 AWG, providing flexibility during installation.
Can the trip curve on the HE43B090 be adjusted in the field?
No. This breaker utilizes fixed thermal and fixed magnetic trip elements. It delivers reliable long-time and instantaneous (LI) protection, but the trip thresholds cannot be modified by the user.
Is the HE43B090 suitable for applications requiring GFCI protection?
No. This is a standard thermal magnetic circuit breaker designed strictly for overcurrent and short circuit protection. It does not include the specialized circuitry needed for ground fault (GFCI) or arc fault (AFCI) protection.
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.