The Siemens B120H00S01 is a 1 Pole thermal magnetic molded case circuit breaker with a current rating of 20 Amps and a voltage rating of 120/240VAC. It has an interrupting rating of 22kAIC at 120VAC. The B120H00S01 has a bolt-on connection type and includes long time and instantaneous trip functions.
Specifications
Key specifications
Amperage
20 A
Voltage
120/240VAC
Series
BL
Poles
1
Electrical ratings
Phase
1
Interrupting Rating
22kAIC at 120VAC
Fit and installation
Mounting Type
Bolt-On
Frame Type
B
Connection Type
Bolt-On
Terminal Connection
Load Side Lug
Length (in)
5.5
Width (in)
4.4
Height (in)
3.8
For Use With
P1 Panelboards
Max Wire Size
10 AWG
Min Wire Size
12 AWG (Al), 14 AWG (Cu)
Protection and operation
Protection
Thermal Magnetic
Functions
LI - Long-Time and Instantaneous Trip
Circuit Breaker Type
Shunt Trip
Actuator Type
Toggle
Standards and features
Approval
UL
Temperature Rating
40 °C
Breaker Feature
Shunt Trip 120V
Product details
Brand
Siemens
MPN
B120H00S01
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Shipping
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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.
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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.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 35 reviews.
5.0
Rated 5.0 out of 5 stars
Based on 35 reviews
5
Rated out of 5 stars
34
Total 5 star reviews: 34
4
Rated out of 5 stars
1
Total 4 star reviews: 1
3
Rated out of 5 stars
0
Total 3 star reviews: 0
2
Rated out of 5 stars
0
Total 2 star reviews: 0
1
Rated out of 5 stars
0
Total 1 star reviews: 0
Reviews Summary
Generated by AI from 66 most recent customer reviews
Last updated 8/15/25
Customers say these circuit breakers meet their specifications and perform as expected. Many reviews highlight the quick delivery times and competitive pricing. Frequent comments address the reliable product quality and ease of installation. The ordering process receives praise for its simplicity, with users noting consistent product availability.