Siemens BQ3C040 40A 3-Pole 480 V Circuit Breaker

For professionals managing three-phase power, the Siemens BQ3C040 40A 3-Pole 480 V Circuit Breaker delivers dependable overcurrent protection where it matters most. Identified by Part Number BQ3C040, this unit is rated at 40 amperes and built with three poles to reliably interrupt faults on 3-phase circuits up to 480 volts.

• Three-pole design provides balanced protection across all three phases in 480 V systems.
• 40 A current rating is calibrated to guard motor loads, distribution feeders, and panel sections without nuisance trips on normal startup.
• Siemens BQ3C040, part of the Siemens BQ3C family, ensures seamless compatibility with Siemens panels and switchgear designed for the BQ3C line.
• Ideal for industrial and commercial environments where 480 V three-phase power is common, such as manufacturing floors, data centers, and large HVAC systems.

Why choose this Siemens circuit breaker? It combines reliable protection with straightforward wiring and replacement in existing Siemens distribution setups. Selecting a Siemens device helps ensure consistent trip characteristics, mechanical fit, and readily available replacement parts when you need them most.

Specifications at a glance:

• Current rating: 40 A
• Poles: 3
• Voltage rating: 480 V
• Part number: BQ3C040

Practical applications and use cases:

• Upgrading a 3-phase distribution panel to safely handle 40 A branches on 480 V networks.
• Replacing a failed breaker in Siemens equipment without altering upstream protection schemes.
• Configuring motor control feeders for reliable shutdowns in automated lines.

Installation and safety notes: Always verify that the panel and circuits are rated for 480 V three-phase operation, ensure appropriate wiring for a 40 A breaker, and adhere to local electrical codes and lockout/tagout practices. With the Siemens BQ3C040, you get a trusted component designed to integrate smoothly with compatible Siemens gear, delivering dependable protection and consistent performance over time.