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Siemens BQ3B03000S01 Molded Case Circuit Breaker
- 30A
- 3 Pole
- Bolt-On
Siemens
BQ3B03000S01
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQ3B03000S01
Quantity
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Siemens BQ3B03000S01 - 30A 3 Pole Molded Case Circuit Breaker
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Description
Featuring a factory-installed 120VAC shunt trip, the Siemens BQ3B03000S01 is a 3-pole, 30A molded case circuit breaker built for applications requiring remote shutdown. The breaker mounts into Siemens P1, P2, and P3 panelboards, as well as legacy ITE enclosures. It provides standard thermal-magnetic protection with a 10kAIC rating at 240VAC. This HACR-rated unit includes load side lugs and fixed trip functions, making it a reliable choice for commercial power distribution.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BQ3B03000S01 |
| Series | BQ |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3 Panelboards, ITE Panelboards |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment, Handle Blocking Device |
|---|---|
| Accessories | Factory Installed 120VAC Shunt Trip, Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Product FAQs
8 answersWhich panelboards are compatible with the BQ3B03000S01 circuit breaker?
This breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as legacy ITE panelboards. It features a bolt-on connection for secure mounting in these commercial and industrial enclosures.
What does the 00S01 suffix indicate on the BQ3B03000S01?
The 00S01 suffix indicates that this breaker includes a factory-installed 120VAC shunt trip. This feature allows for remote tripping of the breaker in emergency shutdown or control applications when a 120V signal is applied.
Can I use this Siemens breaker to replace an older ITE BQ3B03000S01?
Yes, Siemens acquired ITE and continues to manufacture this exact BQ series breaker. The Siemens BQ3B03000S01 is the direct, manufacturer-approved replacement for the legacy ITE version.
What is the maximum frame size for this Siemens BQ series breaker?
The BQ3B03000S01 is built on a 125A BQ frame, though this specific unit is calibrated for a 30A continuous current rating.
How does the thermal-magnetic trip unit in the BQ3B03000S01 operate?
It utilizes fixed Long-Time and Instantaneous (LI) functions. The thermal element protects against sustained overloads by heating up and tripping, while the magnetic element responds immediately to short circuits to prevent equipment damage.
What is the advantage of the bolt-on connection for the BQ3B03000S01?
As a bolt-on circuit breaker, it fastens directly to the panelboard bus bars with screws. This provides a highly secure mechanical and electrical connection that resists vibration and thermal cycling better than standard plug-in breakers.
Is the BQ3B03000S01 suitable for HVAC applications?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment that requires this specific safety certification.
Can I install a padlock device on the BQ3B03000S01 for lockout and tagout procedures?
Yes, this 3-pole BQ breaker is compatible with standard Siemens padlocking devices, such as the ECPLD3. This allows the breaker to be securely locked in the OFF position during maintenance to protect personnel.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 73 reviews.
Reviews Summary
Generated by AI from 67 most recent customer reviews
Last updated 6/3/26
Customers say these breakers arrive quickly and fit perfectly for their electrical needs. Fast shipping and competitive pricing are frequently mentioned, with many users appreciating the availability of hard-to-find and older-style breakers. The products are well-packaged and arrive in good condition. Most customers report successful installations and reliable performance. A few note missing items from orders or concerns about product condition, though the majority express satisfaction with their purchases and indicate they would order again.
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Rating
73 reviews
- HSHector S.Verified BuyerReviewingSiemens BQ3B100H - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/27/26Perfect replacement
Fit perfectly and good price
- AFAnthony F.Verified BuyerReviewingSiemens BQ2B020 - 20A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/25/26works as expected
works as expected
- MSMike S.Verified BuyerReviewingEaton / Cutler-Hammer BQ250250 - 50/50A Quadplex Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/12/26Electrical company
Breaker worked awesome thank you very much
- PEPhilip E.Verified BuyerReviewingSiemens BQ3B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/10/26Siemens BQ3B020
The breaker arrived as described and on time. It works as expected. I will order from SuperBreakers again in the future without hesitation.
- PLPaul L.Verified BuyerReviewingSiemens BQ1B020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/23/26Breaker
Quick shipping. Exact fit.