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circuit-breaker
Siemens B120H - 20 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState
★★★★★
| Part Number | B120H |
| Amperes | 20 |
| Poles | 1 |
| Voltage | 120 |
| Product Type | circuit-breaker |
Regular price
$710.00
Sale price
$710.00
Regular price
Unit price
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Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
Siemens B120H - 20 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState
Regular price
$710.00
Sale price
$710.00
Regular price
Unit price
Product description
Shipping
The Siemens B120H is a 20A, 120V, 1-pole bolt-on molded-case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for solid performance, it safeguards residential, commercial, and light industrial electrical circuits with accuracy and reliability.
- Bolt-on mounting: Secure, rigid attachment that creates a stable, vibration-resistant bus connection for long-term reliability.
- Thermal-magnetic trip unit: Delivers stable, repeatable protection by coordinating overload protection with fast short-circuit clearing.
- OEM compatibility: Designed to work with matching Siemens OEM load centers and panelboards for straightforward installation and dependable operation.
- Versatile applications: Ideal for a wide range of environments—from homes and small businesses to light industrial settings—where dependable single-pole protection is needed.
Technical specifications
- Manufacturer: Siemens
- Part Number: B120H
- Type: Thermal-magnetic molded case circuit breaker
- Amperage Rating: 20A
- Voltage Rating: 120V
- Number of Poles: 1
- Mounting Style: Bolt-on
- Application: Branch circuit overcurrent and short-circuit protection
Why this matters: when you’re building or upgrading a panel, the B120H’s bolt-on design minimizes connection looseness and vibration-related wear, while the thermal-magnetic trip unit provides reliable protection across a range of fault conditions. This means fewer nuisance trips, predictable performance, and safer electrical distribution in everyday spaces.
Ideal use cases include feeding lighting and outlets on a dedicated branch circuit in a home, furnishing reliable protection for a small commercial office, or supporting light industrial panelboard configurations where a robust, single-pole breaker is required. If you’re aligning with Siemens OEM components, the B120H ensures a clean, compatible fit that simplifies installation and maintenance.
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What Our Customers Say
General feedback we often hear from customers purchasing industrial electrical parts.
Verified
Lead time was reasonable and the part matched expectations when it arrived.
Procurement · Ontario
Verified
Good value for industrial use. Customers mention easy installation.
Service tech · Field work
