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Siemens HF3B040 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Siemens
HF3B040
Molded Case Circuit Breaker
Brand
Siemens
SKU
HF3B040
Quantity
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Siemens HF3B040 - 40A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial applications, the Siemens HF3B040 is a 3-pole, 40A molded case circuit breaker. As part of the legacy F-Frame family, it provides reliable thermal-magnetic protection for heavy-duty systems. This bolt-on MCCB installs into Siemens Sentron, P1, P2, and P3 panelboards, as well as compatible switchboards. For modern upgrades, it is replaced by the HHED63B040. Featuring a 65kAIC rating at 480VAC, it ensures robust fault clearing and includes load side lugs.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HF3B040-R |
| Series | HF |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards, P1, P2, P3 Panelboards, Switchboards, Motor Control Centers |
| 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 |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Reverse Feed, Trip-Free Mechanism, Quick-Make/Quick-Break |
Product FAQs
7 answersWhich panelboards are compatible with the HF3B040 circuit breaker?
This bolt-on breaker is designed for use in Siemens Sentron, P1, P2, and P3 panelboards, as well as compatible switchboards and motor control centers.
What wire sizes and materials are accepted by the load side lugs on this breaker?
The factory-installed load side lugs accept 10 AWG to 1/0 AWG wire and are rated for both copper (Cu) and aluminum (Al) conductors.
Can I use the Siemens HF3B040 to replace an older ITE breaker with the same catalog number?
Yes. Siemens acquired ITE and continued manufacturing the Sentron series. The Siemens HF3B040 is a direct replacement for the legacy ITE HF3B040.
Is the HF3B040 rated for use in DC electrical systems?
Yes, this breaker is rated for up to 250VDC with a 10kA interrupting capacity, making it suitable for specific direct current applications in addition to standard AC systems.
How does the HF3B040 connect to the panelboard bus?
It utilizes a bolt-on mounting configuration, securing directly to the panelboard bus bars with mechanical fasteners for a secure, vibration-resistant connection.
Does the HF3B040 include adjustable trip settings?
No, this breaker features fixed thermal and fixed magnetic trip elements for long-time and instantaneous (LI) protection. The trip points cannot be adjusted in the field.
What does the HF designation indicate compared to standard F-frame breakers?
The HF prefix designates this as a high-interrupting F-frame breaker. It provides a 65kA interrupting capacity at 480VAC, which is higher than standard-tier F-frame models used in Sentron panelboards.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- TJTravis J.ReviewingSiemens HF364 Heavy Duty Safety SwitchI recommend this productRated 5 out of 5 stars5/18/22fast!
wow great service
- SNShane N.ReviewingFederal Pacific HF631100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/28/18Excellent Service and Fast Shipping
Breaker was shipped from the US to remote northern LAbrador, Canada very quickly and was in excellent condition. I would highly recommend SuperBreakers.