Siemens B120 BL 20A 1-Pole 120V 10 kA Molded Case Circuit Breaker
MFR Part #:B120
- Amperage Rating :20 A
- Interrupt Rating :10 kA
- Manufacturer Name :Siemens
- Number of Poles :1
- Trip Type :Thermal/Magnetic
- Voltage Rating :120 VAC
Siemens Molded Case Circuit Breaker, Type BL, 120 VAC, 20 A, 60 Hz Frequency, 10 kA Interrupt, BL Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Toggle Actuator, Bolt-On Connection, 14 to 10 AWG, 12 to 10 AWG Wire, Panel Mounting, 40 deg C, 3 in L x 3 in W x 1 in H Dimensions.
Circuit breakers provide a manual means of energizing and de-energizing a circuit. in addition, circuit breakers provide automatic over current protection of a circuit. A circuit breaker allows a circuit to be reactivated quickly after a short circuit or overload is cleared. unlike fuses, which must be replaced when they open, a simple flip of the breakers operating handle restores the circuit.
Siemens B120 Molded Case Circuit Breaker The Siemens B120 is a Type BL, 1-pole molded case circuit breaker that provides manual circuit energizing/de-energizing and automatic thermal-magnetic overcurrent protection for 120 V AC circuits with a 10 kA interrupt rating.
- Siemens B120 Type BL Molded Case Circuit Breaker, 120 VAC, 20 A, 10 kA Interrupt, 1 Poles, Thermal/Magnetic Trip
20 A amperage rating → Protects circuits sized for up to 20 A
This breaker is rated for 20 A to match branch circuits and equipment that require that amperage capacity.
120 V AC voltage rating → Designed for standard single-phase 120 V systems
Rated for 120 V AC and 60 Hz, the breaker is suitable for typical residential and light commercial single-phase circuits.
10 kA interrupt rating → Limits fault energy during short circuits
The 10 kA interrupt rating indicates the maximum available fault current the breaker is rated to safely interrupt.
Thermal-magnetic trip → Combines overload and short-circuit protection
The thermal element protects against prolonged overloads while the magnetic element trips quickly on high fault currents.
Bolt-on connection and panel mounting → Secure installation in distribution panels
The bolt-on connection and panel mounting style provide a fixed, panel-mounted installation method common in electrical distribution equipment.
Toggle actuator → Simple manual on/off operation and reset
A toggle-style handle gives a straightforward manual means to energize, de-energize, and reset the circuit after a trip.
Specification
Details
Manufacturer
Siemens
Manufacturer Part Number
B120
Type / Frame
Type BL, BL Frame
Voltage Rating
120 V AC
Frequency Rating
60 Hz
Amperage Rating
20 A
Interrupt Rating
10 kA
Trip Type
Thermal Magnetic
Number of Poles
1 pole
Phase
1 phase
Actuator Type
Toggle
Connection Type
Bolt-On
Wire Size (as listed)
14 to 10 AWG, 12 to 10 AWG (also listed elsewhere as 8 to 4 AWG copper, 8 to 2 AWG aluminum)
Mounting Type
Panel mount
Temperature Rating
40 °C
Product Dimensions
3 in L x 3 in W x 1 in H
UPC
783643263420
Country of Origin
MEX
Certifications / Ratings (verbatim)
ULLISTED/CSA/NOMCERTIFIED|UL 489|HACR Rated
Electrical distribution circuits
Use as a branch circuit protective device in single-phase 120 V distribution panels to provide manual switching and overcurrent protection.
Panel-mounted circuit protection
Designed for panel mounting with a bolt-on connection to replace or install a protected circuit in a distribution panelboard.
Installation:
- Panel mounting with bolt-on connection
- Mounting with insta wire (listed in source features)
- Supports 120 V shunt trip voltage (listed in source features)
- Wire sizes listed in source: 14 to 10 AWG and 12 to 10 AWG; source also lists 8 to 4 AWG copper and 8 to 2 AWG aluminum
What voltage and frequency is the B120 rated for?
120 V AC, 60 Hz.
What is the amperage rating and number of poles for this breaker?
20 A, 1 pole.
What type of trip mechanism does the B120 use?
Thermal-magnetic trip.
What wire sizes does the B120 accept?
The source lists wire sizes as 14 to 10 AWG and 12 to 10 AWG; a separate features listing also shows 8 to 4 AWG copper and 8 to 2 AWG aluminum.
Is the B120 certified to industry standards?
The source lists certifications verbatim as: ULLISTED/CSA/NOMCERTIFIED|UL 489|HACR Rated.