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Siemens B370HH Molded Case Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
Siemens
B370HH
Molded Case Circuit Breaker
Brand
Siemens
SKU
B370HH
Quantity
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Siemens B370HH - 70A 3 Pole Molded Case Circuit Breaker
New
Quantity
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Siemens B370HH - 70A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B370HH |
| Series | B |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 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, HACR, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Non-Interchangeable Trip |
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Siemens B370HH - 70A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B370HH-R |
| Series | B |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 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, HACR, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Non-Interchangeable Trip |
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Description
Built for commercial and industrial power distribution, this 70A molded case circuit breaker delivers dependable overcurrent and short-circuit protection. The thermal-magnetic design ensures accurate tripping characteristics for three-phase electrical systems. Designed specifically for Siemens P1 through P5 panelboards, the device utilizes a sturdy bolt-on mounting configuration. With a high interrupting rating of 65kAIC at 240VAC, this HACR-rated breaker handles demanding electrical loads.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B370HH |
| Series | B |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 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, HACR, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Non-Interchangeable Trip |
Product FAQs
5 answersWhich Siemens panelboards are compatible with the B370HH circuit breaker?
The B370HH is designed for direct bus connection in Siemens P1, P2, P3, P4, and P5 panelboards. It is not compatible with standard residential load centers that require plug-on breakers.
What does the "HH" in the B370HH part number indicate?
The "HH" designates this as a high-interrupting HBL type breaker. It features an interrupting rating of 65kAIC at 240VAC, compared to the standard 10kAIC (B370) or 22kAIC (B370H) versions.
Can the B370HH replace older ITE circuit breakers?
Yes, Siemens acquired ITE, and the B370HH is a direct replacement for legacy ITE B370HH breakers. It can also replace standard ITE B370 breakers if a higher 65kAIC interrupting rating is required.
Is the B370HH suitable for use with heating, air conditioning, and refrigeration equipment?
Yes, this breaker is HACR rated, making it suitable for protecting multi-motor and combination loads commonly found in HVAC and refrigeration systems.
How does the trip unit in the B370HH operate?
It utilizes a fixed thermal-magnetic trip unit. The thermal component provides delayed tripping for overloads, while the magnetic component provides instantaneous tripping for short circuits.
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