Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Siemens B240H Miniature Circuit Breaker
- 40A
- 2 Pole
- Bolt-On
Siemens
B240H
Miniature Circuit Breaker
Brand
Siemens
SKU
B240H
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens B240H - 40A 2 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Siemens B240H - 40A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B240H |
| Series | B |
| Amperage | 40A |
| Poles | 2 |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Common Trip, Non-Interchangeable Trip |
Sold out
Quantity
Siemens B240H - 40A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B240H-R |
| Series | B |
| Amperage | 40A |
| Poles | 2 |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Common Trip, Non-Interchangeable Trip |
Similar Items
60A 2 Pole Miniature Circuit Breaker
20A 2 Pole Miniature Circuit Breaker
70A 2 Pole Miniature Circuit Breaker
Description
Engineered for commercial and industrial applications, the Siemens B240H provides reliable thermal-magnetic protection for 120/240VAC systems. This 2-pole, 40A miniature circuit breaker features a bolt-on mounting style for secure electrical connections. It mounts into Siemens P1, P2, P3, P4, and P5 panelboards. With a 22kAIC interrupting rating, it safely clears moderate fault currents while offering standard long-time and instantaneous trip functions. HACR rated for HVAC equipment.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B240H |
| Series | B |
| Amperage | 40A |
| Poles | 2 |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Common Trip, Non-Interchangeable Trip |
Product FAQs
9 answersWhat panelboards are compatible with the Siemens B240H circuit breaker?
The B240H is a bolt-on miniature circuit breaker designed specifically for use in Siemens P1, P2, P3, P4, and P5 commercial panelboards.
What is the difference between the Siemens B240 and the B240H?
The primary difference is the interrupting rating. The standard B240 has a 10kAIC rating, while the B240H features a higher 22kAIC rating at 120/240VAC.
What wire sizes and materials are accepted by the B240H lugs?
The lugs on this breaker accept 8 to 6 AWG copper wire or 8 to 4 AWG aluminum wire.
Is the Siemens B240H suitable for use with HVAC equipment?
Yes, this breaker is HACR rated, making it approved for use with heating, air conditioning, and refrigeration equipment.
Does the B240H plug into the panel bus or bolt on?
This is a bolt-on circuit breaker. It requires a bolted connection to the panelboard bus and is not compatible with standard plug-on load centers.
Can I use the B240H in a residential Siemens load center?
No, the B240H is a bolt-on breaker designed for commercial P-series panelboards. Residential load centers typically require plug-on breakers like the QP series.
What type of trip mechanism does the B240H use?
It utilizes a fixed thermal-magnetic trip unit, providing both long-time thermal protection against overloads and instantaneous magnetic protection against short circuits.
Can I replace a B240H with a B240HH?
Yes, if your panel requires a 40A, 2-pole bolt-on breaker, the B240HH can be used as an upgrade. The B240HH offers a higher 65kAIC interrupting rating compared to the 22kAIC of the B240H.
Why is it important to match the AIC rating when replacing a B240H?
The 22kAIC rating indicates the maximum fault current the breaker can safely interrupt. Replacing it with a lower-rated breaker, such as the 10kAIC B240, could result in catastrophic failure during a severe short circuit.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.