Description
The Siemens BF120H is a 1-pole ground fault circuit breaker designed for reliable protection of electrical circuits against overloads, short circuits, and ground faults. With a current rating of 20 amps and an operating voltage of 120 VAC, it ensures safe operation in residential, commercial, and light industrial systems. This bolt-on breaker features a compact molded case design with high interrupting capacity for dependable performance.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Siemens |
| Category |
Circuit Protection |
| Part Number |
BF120H |
| Subcategory |
Ground Fault Circuit Breaker |
| Series |
BL |
| Frame Type |
B Frame |
| Current Rating (In) |
20 Amps |
| Voltage Rating (Ue) |
120 VAC |
| Poles |
1 |
| Phase |
1 |
| Interrupting Capacity |
22 kAIC @ 120V |
| Trip Function |
LI - Long-Time and Instantaneous |
| Protection Type |
Thermal Magnetic |
| Ground Fault Protection |
Yes (GFCI) |
| Mounting Type |
Bolt-On |
| Connection Type |
Load Side Lug |
| Terminal Wire Range |
10 AWG – 14 AWG |
| Actuator Type |
Toggle |
| Certifications |
UL, CSA, NOM |
| Dimensions (L × W × H) |
5 × 4 × 1 in |
| Weight |
12 oz |
Information About
BF120H
The BF120H is part of the Siemens BL Series of thermal-magnetic molded case circuit breakers, engineered for panelboard mounting and long-term service reliability. It incorporates LI trip functions (long-time and instantaneous) for precise fault response and a built-in GFCI mechanism to protect personnel and equipment from ground fault currents. The breaker’s bolt-on mounting system ensures secure installation, while compliance with UL, CSA, and NOM standards guarantees global compatibility. Its durable construction and efficient thermal-magnetic protection make it suitable for both new installations and retrofit applications.
Key Features:
- Rated Current: 20A current rating supports general-purpose circuit protection.
- Voltage Rating: Operates at 120 VAC for standard residential and commercial systems.
- Interrupting Capacity: 22 kAIC at 120V for reliable fault interruption under load.
- Ground Fault Protection: Integrated GFCI safeguards equipment and personnel from leakage currents.
- Trip Functionality: Long-time and instantaneous (LI) trip curve ensures optimal protection response.
- Mounting Style: Bolt-on design provides secure and vibration-resistant installation.
- Terminal Compatibility: Accepts wire sizes from 10 AWG to 14 AWG for flexible wiring options.
- Safety Certifications: UL, CSA, and NOM approved for use in compliant electrical systems.
The BF120H delivers the reliability and precision required for safe and efficient ground fault protection in low-voltage electrical installations.
