Siemens BQD335 - 35 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens BQD335 — 35A, 480V, 3-pole bolt-on molded case circuit breaker — is engineered for dependable branch-circuit protection in panelboards and load centers. Designed to handle the demands of residential, commercial, and light industrial environments, this unit combines robust physical mounting with precise electrical protection for peace of mind in everyday operation.

Key benefits

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing connection movement and ensuring stable performance in environments with equipment vibration or movement.
• Thermal-magnetic trip unit delivers stable, repeatable protection by coordinating slow, thermal overcurrent sensing with fast magnetic trips for short circuits, helping to prevent nuisance trips while safeguarding equipment.
• Three-pole configuration ideal for 3‑phase systems, enabling reliable protection across phase conductors in commercial or light industrial distributions.
• 35A, 480V rating aligns with common branch-circuit protections in higher-voltage panelboards and load centers, supporting efficient, code-compliant installations.
• OEM-compatible design and mounting style are chosen to work seamlessly with matching Siemens OEM load centers and panelboards, ensuring a proper fit and straightforward replacement or upgrade.
• Versatile applications suitable for a range of settings—from small commercial apps to light industrial equipment protection and residential installations where three-phase protection is required.

Use cases and practical scenarios

• Upgrading or expanding a panelboard that requires bolt-on, 3-pole protection on a 480V three-phase distribution.
• Replacing a worn or damaged breaker in an existing Siemens-compatible load center to restore reliable overcurrent protection.
• Designing new electrical layouts for commercial spaces or light industrial facilities where robust, vibration-resistant connections improve long-term reliability.
• Protecting branch circuits feeding motors, transformers, or other equipment that benefit from a stable thermal-magnetic trip characteristic.

Technical snapshot

• Manufacturer: Siemens
• Part number: BQD335
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 35A
• Voltage rating:
480V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection