Siemens BQ3B035H - 35 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens BQ3B035H is a purpose-built 35A, 240V, 3‑pole bolt‑on molded case circuit breaker designed to safeguard your electrical infrastructure in panelboards and load centers. Built for dependable branch circuit overcurrent and short-circuit protection, this unit delivers robust performance where it matters most—in homes, commercial spaces, and light industrial environments.

Key benefits you’ll notice in real-world use

• Secure bolt‑on mounting provides a rigid, vibration‑resistant bus connection. This makes it ideal for installations in mechanical rooms, near HVAC equipment, or any setting where vibration could loosen connections over time.
• Thermal‑magnetic trip unit delivers stable, repeatable protection. The thermal element handles sustained overloads while the magnetic component responds quickly to short circuits, helping to prevent damage to wiring and connected equipment.
• OEM-compatible fit works with matching Siemens OEM load centers and panelboards, simplifying replacements and upgrades without sacrificing performance or reliability.
• 3‑pole, 240V design supports 3‑phase systems and multi‑wire branch circuits, providing coordinated protection for equipment like motors, compressors, and lighting circuits in commercial or light industrial applications.
• Versatile for multiple settings whether you’re upgrading a residential service panel, outfitting a small commercial space, or equipping a light industrial facility, this breaker covers a wide range of protective needs.

Technical snapshot

• Manufacturer: Siemens
• Part number: BQ3B035H
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage rating: 35A
• Voltage rating: 240V
• Number of poles: 3
• Mounting style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

Use cases and practical scenarios

• Upgrading an aging panelboard in a small office building where reliable 3‑phase protection is needed for motor loads or HVAC equipment.
• Installing a dedicated protection device for a critical 3‑wire or 3‑phase circuit in a workshop or light industrial space.
• Replacing a worn‑out breaker in a Siemens‑compatible panelboard with a bolt‑on solution that minimizes the risk of loose connections due to vibration.
• Specifying a consistent, OEM‑level component for retrofit projects where panel compatibility and straightforward installation matter.

Who should consider the Siemens BQ3B035H

• Licensed electricians and electrical contractors seeking a durable, easy‑to‑install bolt‑on breaker for panel upgrades or new installations.
• Facility managers responsible for reliable protection in commercial or light industrial environments with moderate electrical loads.
• Homeowners or property owners planning safer, compliant protection for 3‑pole circuits in multi‑wire configurations.

Why this breaker stands out

• Unlike plug‑in styles, bolt‑on mounting reduces the likelihood of connection looseness in vibration‑prone spaces, helping maintain consistent protection over time.
• The combination of thermal and magnetic trip mechanisms ensures both protection for normal overloads and a rapid response to short circuits, minimizing damage and downtime.
• Designed to align seamlessly with Siemens OEM load centers and panelboards, offering a dependable, OEM‑grade replacement option that fits with existing infrastructure.

Whether you’re reinforcing a residential panel or equipping a commercial or light industrial setup, the Siemens BQ3B035H delivers precise protection, solid mounting, and compatibility you can trust. It’s the practical, high‑confidence choice when you need reliable branch circuit protection for 3‑pole, 240V systems.