Siemens BQ3B07000S07 Molded Case Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
Siemens
BQ3B07000S07
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQ3B07000S07
Quantity
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Siemens BQ3B07000S07 - 70A 3 Pole Molded Case Circuit Breaker
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Description
Tailored for specialized industrial automation, the Siemens BQ3B07000S07 incorporates a 24VDC shunt trip for low-voltage remote disconnects. This 70-amp, three-pole breaker delivers consistent thermal-magnetic protection. It fastens into Siemens P1 panelboards and older ITE enclosures, utilizing a robust bolt-on connection to maintain continuity. With a 10kAIC rating at 240VAC and HACR certification, it ensures compliant operation across diverse commercial HVAC and motor control applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BQ3B07000S07 |
| Series | BQ |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1 Panelboards, ITE Panelboards |
| Wire Gauge | 8-1 AWG (Cu), 6-1/0 AWG (Al) |
| Max Wire | 1 AWG (Cu), 1/0 AWG (Al) |
| Min Wire | 8 AWG (Cu), 6 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 | Load Side Lugs, Shunt Trip 24VDC |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Product FAQs
6 answersWhich panelboards are compatible with the BQ3B07000S07 breaker?
This bolt-on breaker is designed for installation in Siemens P1 panelboards as well as legacy ITE panelboards. Always verify compatibility with your specific panel labeling before installation.
What wire sizes and materials are supported by the load lugs on this breaker?
The included load side lugs accommodate 8 to 1 AWG copper (Cu) conductors or 6 to 1/0 AWG aluminum (Al) conductors.
What is the purpose of the 120V shunt trip on the BQ3B07000S07?
The factory-installed 120V shunt trip allows the breaker to be opened remotely by applying a 120V control signal. This feature is typically used for emergency stop circuits or automated safety shutdowns.
Are the thermal-magnetic trip settings adjustable on this breaker?
No, the BQ3B07000S07 features a fixed thermal-magnetic trip unit. The Long-Time (L) and Instantaneous (I) trip functions are factory-set and cannot be adjusted in the field.
Can this bolt-on breaker be installed in a standard plug-on load center?
No, the BQ3B07000S07 is a bolt-on molded case circuit breaker designed specifically for commercial panelboards like the Siemens P1 and legacy ITE panels. It is not compatible with residential plug-on load centers.
Does the shunt trip require an external power source?
Yes, the integrated 120V shunt trip requires an external 120VAC control power source to energize the coil and trip the breaker.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 74 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
74 reviews
- DVDavid V. O.Verified BuyerReviewingSiemens BQ3B030H - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/3/26Electrician
Came
fast
- 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.