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Siemens B370H Miniature Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
Siemens
B370H
Miniature Circuit Breaker
Brand
Siemens
SKU
B370H
Quantity
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Siemens B370H - 70A 3 Pole Miniature Circuit Breaker
New
Quantity
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Siemens B370H - 70A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B370H |
| Series | B |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Non-Interchangeable Trip |
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Siemens B370H - 70A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B370H-R |
| Series | B |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Non-Interchangeable Trip |
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Description
A dependable choice for industrial facilities, the Siemens B370H provides 70 amps of thermal-magnetic overcurrent protection. This three-pole, 240V miniature circuit breaker is part of the BLH family, offering a 22kA interrupt rating. Installation is straightforward with a bolt-on mounting style designed for Siemens P1 through P5 panelboards. The included load side lugs accommodate a wide range of wire gauges. This HACR-rated component features a trip-free mechanism and Insta-Wire technology.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B370H |
| Series | B |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Non-Interchangeable Trip |
Product FAQs
6 answersWhich panelboards accept the Siemens B370H circuit breaker?
The B370H is a bolt-on breaker specifically designed to fit Siemens P1, P2, P3, P4, and P5 panelboards. It is not compatible with standard load centers that require plug-on breakers.
What wire gauges are compatible with the B370H load lugs?
The factory-installed lugs accommodate 4 AWG to 1/0 AWG copper conductors, or 2 AWG to 1/0 AWG aluminum conductors. Ensure proper torque is applied during installation as specified on the breaker label.
What does the H in the B370H part number signify?
The H indicates that this is a BLH-type breaker with a high interrupting rating of 22kAIC at 240VAC, compared to standard 10kAIC BL breakers. This makes it suitable for commercial and industrial systems with higher available fault currents.
What type of protection does the B370H trip unit provide?
It features a fixed thermal-magnetic trip unit. The thermal component provides long-time protection against sustained overloads, while the magnetic component offers instantaneous protection against short circuits.
Is the Siemens B370H HACR rated?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires group motor protection.
Does the B370H feature Insta-Wire technology?
Yes, this breaker includes Siemens Insta-Wire technology. The lug screws are backed out from the factory, allowing electricians to insert wires immediately and speed up the installation process.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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1 review
- HCHeidi C.Rated 5 out of 5 stars6/20/23Excellent customer service!
Very helpful customer service followed up by a speedy accurate order delivery! Will definitely use again!