Siemens Q380 - 80 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Siemens Q380 80A, 240V, 3-pole plug-in molded case circuit breaker is engineered for dependable branch circuit protection in panelboards and load centers. With a fast plug-in connection and a robust thermal-magnetic trip system, this breaker provides reliable, repeatable protection against overcurrent and short circuits in residential, commercial, and light industrial settings.

• Rapid installation and replacement with a simple plug-in connection that reduces labor time during panel upgrades or servicing.
• Thermal-magnetic trip unit delivers precise, stable protection by responding to both overload current and fault conditions, minimizing nuisance trips while safeguarding wiring and equipment.
• 3-pole design for 240V systems ideal for three-phase or multi-wire branch circuits common in commercial and light industrial applications.
• 80A rating provides strong protection for mid-size branch circuits without sacrificing system flexibility.
• Molded case construction supports durable, long-term performance in panelboards and load centers designed to accommodate plug-in breakers.
• OEM compatibility is built to work with matching Siemens OEM load centers and panelboards, ensuring a cohesive, reliable protection system.

Why this Siemens Q380 matters for your electrical protection plan

Whether you're upgrading a commercial distribution panel, expanding a light industrial circuit, or replacing a failed breaker, the Q380 delivers consistent, predictable tripping behavior. The thermal-magnetic mechanism reduces the risk of nuisance trips from minor voltage fluctuations while still providing fast response to dangerous faults. Its plug-in mounting simplifies future maintenance—swap in seconds without rewiring, keeping downtime to a minimum.

Ideal use cases

• Residential-grade service panels with multi-wire branch circuits requiring reliable 3-pole protection.
• Commercial load centers managing lighting, HVAC, and auxiliary systems that demand quick plug-in replacements.
• Light industrial distribution panels where 240V, three-phase circuits benefit from solid protection and easy maintenance.

Key benefits in practice

• Reduced service time with a quick plug-in connection, enabling fast maintenance windows.
• Clear protection profile—thermal-magnetic trip provides repeatable performance across varying loads.
• Compatibility ensures a seamless fit within Siemens’ own panel ecosystems, preserving warranty and performance expectations.

Technical snapshot

• Manufacturer: Siemens
• Part Number: Q380
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 80A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

When you need reliable, easy-to-service protection for 240V, 3-pole circuits in panelboards or load centers, the Siemens Q380 stands out with its combination of fast installation, predictable thermal-magnetic protection, and OEM compatibility. It’s the practical choice for teams prioritizing safety, efficiency, and long-term system integrity.