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Siemens B140H Molded Case Circuit Breaker
- 40A
- 1 Pole
- Bolt-On
Siemens
B140H
Molded Case Circuit Breaker
Brand
Siemens
SKU
B140H
Quantity
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Siemens B140H - 40A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
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Siemens B140H - 40A 1 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B140H |
| Series | B |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Non-Interchangeable Trip, Reverse Feed, Trip-Free Mechanism |
Sold out
Quantity
Siemens B140H - 40A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B140H-R |
| Series | B |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Non-Interchangeable Trip, Reverse Feed, Trip-Free Mechanism |
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Description
Part of the B-Frame series, the Siemens B140H delivers thermal-magnetic overcurrent protection for commercial electrical systems. This 40-amp, single-pole breaker is engineered to handle higher fault currents with its 22kAIC rating at 120/240VAC. It installs into Siemens P1 through P5 panelboards using a secure bolt-on connection. The unit also serves as a functional substitute for BAB1040H and QOB140VH breakers. This HACR-rated breaker features Insta-Wire technology to speed up wiring.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B140H-R |
| Series | B |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Non-Interchangeable Trip, Reverse Feed, Trip-Free Mechanism |
Product FAQs
6 answersWhich panelboards are compatible with the B140H breaker?
The B140H features a bolt-on connection designed specifically for installation in Siemens P1, P2, P3, P4, and P5 panelboards.
What does the H in the B140H part number indicate?
The H designates this as a Type BLH high-interrupting circuit breaker. It provides a 22kAIC rating at 120/240VAC, which is higher than the 10kAIC rating found on standard Type BL breakers.
What are the acceptable wire sizes for the B140H terminal lugs?
The load side lugs accept 8 to 6 AWG copper conductors or 8 to 4 AWG aluminum conductors.
Can the Siemens B140H replace older ITE brand breakers?
Yes, Siemens acquired ITE, and the B140H serves as the direct replacement for legacy ITE 40A, 1-pole, Type BLH bolt-on circuit breakers.
Does the B140H include Insta-Wire technology?
Yes, this breaker features Siemens Insta-Wire. The terminal screws are shipped backed out and ready for immediate wire insertion, which speeds up the wiring process during installation.
How does the thermal magnetic trip unit operate on the B140H?
The fixed thermal magnetic trip unit provides two types of protection. The thermal component offers long time delay protection against overloads, while the magnetic component provides instantaneous protection against short circuits.
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