Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Siemens B120HH Molded Case Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
Siemens
B120HH
Molded Case Circuit Breaker
Brand
Siemens
SKU
B120HH
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens B120HH - 20A 1 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
30A 1 Pole Molded Case Circuit Breaker
70A 1 Pole Molded Case Circuit Breaker
20A 2 Pole Molded Case Circuit Breaker
Description
Engineered for commercial and industrial applications, the Siemens B120HH provides reliable overcurrent protection for branch circuits. This 1-pole, 20A molded case circuit breaker features a thermal-magnetic trip unit with long-time and instantaneous functions. It installs into Siemens P1, P2, and P3 panelboards using a secure bolt-on connection. Delivering a robust 65kAIC interrupting rating at 120/240VAC, it ensures superior safety for high-fault environments. HACR and SWD rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B120HH |
| Series | B |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG (Cu), 12 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, Handle Tie |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, SWD Rated |
Product FAQs
6 answersWhat panelboards are compatible with the Siemens B120HH circuit breaker?
This bolt-on breaker is specifically designed for use in Siemens P1, P2, and P3 commercial panelboards. It is not compatible with standard residential plug-on load centers.
What breaker family and frame type does the B120HH belong to?
The B120HH is a Type HBL molded case circuit breaker within the Siemens BL family. The HH suffix in the catalog number signifies its extra-high short circuit interrupting rating.
How does the B120HH connect to the panelboard bus?
It is a bolt-on circuit breaker. Instead of snapping onto the bus bar, it fastens directly to the panelboard bus with a mounting screw to provide a rigid, secure mechanical connection.
What is the difference between the Siemens B120, B120H, and B120HH breakers?
While all three are 1-pole, 20-amp breakers in the BL family, their short circuit interrupting ratings differ. The standard B120 (Type BL) is rated for 10kAIC, the B120H (Type BLH) is rated for 22kAIC, and the B120HH (Type HBL) offers the highest protection at 65kAIC.
Can I use this Siemens breaker to replace an older ITE B120HH?
Yes. Siemens acquired ITE and continued manufacturing the same breaker frames. A modern Siemens B120HH is the direct replacement for an older ITE B120HH.
Is the Siemens B120HH interchangeable with standard Type QP breakers?
No. The B120HH is a Type HBL bolt-on breaker for commercial panelboards, whereas Type QP breakers are plug-on units designed for residential load centers. They cannot be interchanged.
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.