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Siemens B39000S01 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Siemens
B39000S01
Molded Case Circuit Breaker
Brand
Siemens
SKU
B39000S01
Quantity
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Siemens B39000S01 - 90A 3 Pole Molded Case Circuit Breaker
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Description
Designed for commercial power distribution, the Siemens B39000S01 is a 3-pole, 90A molded case circuit breaker. It integrates a 120VAC shunt trip mechanism, allowing users to remotely de-energize the circuit. This Type BL breaker utilizes a bolt-on mounting style for secure installation into Siemens P1 through P5 panelboards. The included lugs accept 4-1/0 AWG copper or 2-1/0 AWG aluminum conductors. Rated for 10kA at 240VAC, the unit is HACR certified for heating and cooling applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B39000S01 |
| Series | BL |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 4-1/0 AWG (Cu), 2-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG (Cu), 2 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip 120VAC (Factory Installed) |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Trip-Free Mechanism, Quick-Make/Quick-Break |
Product FAQs
8 answersWhat does the 00S01 suffix indicate on the B39000S01 catalog number?
The 00S01 suffix means this breaker comes with a factory-installed 120V AC shunt trip accessory. This allows the breaker to be tripped remotely using an external control signal.
Which Siemens panelboards are compatible with this bolt-on breaker?
The B39000S01 is designed for installation in Siemens P1, P2, P3, P4, and P5 commercial panelboards. It is not compatible with standard plug-on residential load centers.
How is the 120V AC shunt trip wired for remote operation?
The factory-installed shunt trip features its own control wires that must be connected to a separate 120V AC control circuit. Energizing this circuit via a remote switch, relay, or emergency stop button will mechanically trip the breaker.
What is the standard catalog number for this breaker without the shunt trip accessory?
If your application does not require a remote shunt trip, the standard 90A, 3-pole, 10kAIC bolt-on breaker is catalog number B390.
When wiring the B39000S01, what conductor sizes are supported by the factory lugs?
The factory lugs accommodate 4 to 1/0 AWG copper conductors or 2 to 1/0 AWG aluminum conductors. Ensure proper torque specifications are followed during installation.
What specific fault conditions does the LI trip function cover?
The fixed thermal-magnetic trip unit provides long-time (L) protection for sustained overloads and instantaneous (I) protection for immediate short-circuit faults.
Is the B39000S01 approved for use with commercial HVAC systems?
Yes, this breaker carries an HACR rating, meaning it is tested and approved for the specific inrush currents associated with heating, air conditioning, and refrigeration equipment.
What are the advantages of the bolt-on mounting style for this breaker?
As a bolt-on breaker, the B39000S01 secures directly to the panelboard bus bars using screws. This provides a highly reliable, vibration-resistant connection compared to standard plug-on designs.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 35 reviews.
Total 5 star reviews: 34 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Reviews Summary
Generated by AI from 66 most recent customer reviews
Last updated 8/15/25
Customers say these circuit breakers meet their specifications and perform as expected. Many reviews highlight the quick delivery times and competitive pricing. Frequent comments address the reliable product quality and ease of installation. The ordering process receives praise for its simplicity, with users noting consistent product availability.
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Rating
35 reviews
- TSTom S.Verified BuyerReviewingSiemens B3100 3 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Superbreakers is our go to!
Great prices, great service and quick delivery.
- MGMaggie G.Verified BuyerReviewingSiemens B250 - 50A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/24/26Great Service
Came in great condition and in an incredibly timely manner. Will continue superbreakers for all of my orders in the future!
- DBDonnie B.Verified BuyerReviewingSiemens B115 - 15A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/11/26New Breaker
Awesome breaker & Superbreakers is a awesome company!
- BLBrian L.Verified BuyerReviewingSiemens B120 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/4/26Brian
Works great
- JFJoseph F.Verified BuyerReviewingSiemens B120 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/23/26Great value
It was a great value