Siemens BQ3B035 - 35 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens BQ3B035 is a dependable 35A, 240V, 3-pole bolt-on molded case circuit breaker engineered to protect branch circuits in panelboards and load centers. Designed for residential, commercial, and light industrial applications, this unit delivers reliable overcurrent and short-circuit protection with a focus on steady, repeatable performance in environments where vibration and movement are factors.

Key features that matter in real-world installs

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing nuisance trips and maintaining consistent electrical contact over time.
• Thermal-magnetic trip unit combines precise thermal sensing with magnetic trip action for fast, predictable protection against both overloads and short circuits.
• OEM-compatible design matches Siemens’ load centers and panelboards, ensuring clean integration with existing gear and minimizing retrofit headaches.
• Three-pole, 240V configuration designed to protect multi-line, multi-phase circuits common in modern panel installations.

Where it shines — ideal use cases

• Residential subpanels and main distribution panels requiring a robust 35A, 240V protection solution.
• Commercial light industrial panels where reliable trip performance across all poles is critical for motor loads, lighting, and receptacle circuits.
• New installations or replacements in panelboards that require bolt-on style protection with secure bus connections to withstand vibration or movement.

Technical snapshot

• Manufacturer: Siemens
• Part Number: BQ3B035
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 35A
• Voltage Rating:
240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Applications: Branch circuit overcurrent and short-circuit protection

Installation and compatibility tips

• Ensure your panelboard or load center supports bolt-on molded case breakers of the BQ family for a seamless fit and reliable engagement with the bus bars.
• Follow manufacturer torque and wiring instructions to preserve the integrity of the vibration-resistant connection and maintain the thermal-magnetic trip performance.
• Use this unit for circuits that require clean, dependable disconnection across all poles, reducing the risk of partial circuit protection in multi-phase setups.

Why this Siemens unit is a smart choice

• Distinctive bolt-on construction gives you a sturdier, more vibration-resistant connection than some plug-in alternatives, translating to longer-term reliability in challenging environments.
• The combination of thermal and magnetic tripping delivers predictable, fast response to both overloads and short circuits, helping protect wiring, devices, and downstream equipment.
• Designed to work harmoniously with matching OEM load centers and panelboards, supporting straightforward replacement or expansion without compatibility concerns.

For electricians and facilities technicians seeking a proven, purpose-built protection solution for 3-pole 240V circuits, the Siemens BQ3B035 offers targeted reliability, consistent protection performance, and installation simplicity in a compact bolt-on package. Part number BQ3B035, ready to safeguard your critical branch circuits wherever steady, controlled disconnection is essential.