Siemens BQD235 - 35 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens BQD235 is a 2-pole, bolt-on molded case circuit breaker designed to deliver dependable branch-circuit protection in panelboards and load centers. With a 35 A rating and 480 V capacity, this device is built to handle demanding commercial and light industrial environments while maintaining seamless compatibility with Siemens OEM panels.

• Secure bolt-on mounting: a rigid, vibration-resistant connection helps maintain a reliable bus interface and stable protection, even in installations with movement or vibration.
• Thermal-magnetic trip unit: combines precise overcurrent protection with fast short-circuit clearing, delivering stable, repeatable performance across temperature variations and load conditions.
• 2-pole, 35 A, 480 V: ideal for protecting two-phase circuits in 480 V distribution systems commonly found in commercial and light industrial settings.
• OEM panel compatibility: engineered to work with matching Siemens load centers and panelboards, simplifying replacements and ensuring proper fit and electrical continuity.
• Versatile用途: suitable for residential, commercial, and light industrial applications where reliable 480 V branch-circuit protection is required.

Why this breaker stands out: the bolt-on design minimizes loose connections that can lead to nuisance trips, while the thermal-magnetic protection responds quickly to faults, helping prevent damage to downstream wiring and equipment. The two-pole configuration supports coordinated protection for multi-wire branch circuits when paired with compatible panels, delivering safe, code-conscious performance.

Use cases and ideal scenarios

electricians and facilities teams upgrading or maintaining Siemens panelboards in office buildings, retail locations, data centers, and light manufacturing environments will find the BQD235 a straightforward, reliable choice for 480 V distribution. It’s also well-suited as a replacement part in existing Siemens systems needing a robust 35 A, 480 V, 2-pole bolt-on breaker to restore protected circuits quickly.

Key specifications at a glance

• Manufacturer: Siemens
• Part Number: BQD235
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 35 A
• Voltage Rating: 480 V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Installation and best practices

For optimal performance, follow local electrical codes and the panelboard manufacturer’s installation guide. Use the appropriate torque for bolt-on mounting to ensure a secure connection, and verify that the panelboard and bus configuration are compatible with the BQD235. Regularly inspect connections during maintenance to prevent vibration-related wear and ensure continued protection accuracy.

Designed to deliver dependable, site-ready protection, the Siemens BQD235 35 A, 480 V, 2-pole bolt-on circuit breaker is a trusted choice for professionals who value reliability, compatibility, and clear, actionable protection for their 480 V distribution systems. Available through AmpState, it helps keep commercial and light industrial electrical infrastructure protected and running smoothly.