Siemens BQD330 - 30A, 480VAC, 3-Pole, Miniature Circuit Breaker (MCB)

The Siemens BQD330 is a compact, three-pole miniature circuit breaker designed to deliver dependable overcurrent protection for demanding 3-phase electrical systems. With a 30A current rating and a 480VAC maximum, this MCB is built to safeguard distribution panels, switchboards, and control panels in industrial, commercial, and OEM environments.

What makes the BQD330 stand out

Three-pole configuration ensures synchronized protection across all phases in 3-phase networks, simplifying panel design and reducing wiring complexity. Engineered for reliability in space-constrained installations, the BQD330 fits neatly into standard panelboards and motor control centers without compromising performance. It provides fast, predictable isolation when faults occur, helping protect motors, drives, and connected equipment from damage and unexpected downtime.

Key benefits and practical value

• Accurate 30A protection at up to 480VAC to safely interrupt overcurrent events before equipment is damaged.
• 3-Pole design covers three-phase circuits with a single device, ensuring balanced protection and simplified wiring in three-phase systems.
• Versatile applications suitable for panelboards, switchboards, and control panels across industrial facilities, commercial buildings, and OEM configurations.
• Durable, industry-ready performance built to withstand the demands of distribution panels and motor control centers where reliable operation is critical.

Ideal use scenarios

• New installations in manufacturing facilities that rely on three-phase motors and drives operating at 480 VAC.
• Retrofits and upgrades of distribution panels where space efficiency and reliable protection are priorities.
• OEM equipment builds requiring a compact, robust MCB with precise overcurrent protection for three-phase circuits.

Specifications at a glance

• Current rating: 30A
• Voltage rating: Up to 480VAC
• Poles: 3-Pole
• Breaker type: Miniature Circuit Breaker (MCB)

If you’re configuring a three-phase distribution setup and need a dependable, space-efficient overcurrent protector, the Siemens BQD330 30A 480VAC 3-Pole MCB is designed to deliver clear, actionable protection where it matters most—inside distribution panels and motor control centers.