Siemens | QJ3B20000S01 | Circuit Breaker | 200A | 3-Pole | 240V | Bolt-On

Siemens QJ3B20000S01 is a 200 A, 3‑pole circuit breaker designed for 240 V systems, featuring a bolt‑on mounting for fast, secure field installation. Built for maintenance, retrofit, and replacement projects where exact specifications matter, this unit delivers dependable three‑phase overcurrent protection in demanding electrical environments.

• Amperage rating: 200 A
• Poles: 3‑Pole
• Voltage: 240 V
• Mounting: Bolt‑On
• Part number reference: QJ3B20000S01 is the best reference for compatibility
• Important note: Confirm fit and ratings before ordering

Why choose this Siemens breaker? It’s purpose‑built for scenarios where you’re upgrading or replacing aging protection without changing the surrounding panel architecture. The 3‑pole configuration supports balanced control of all three phases, delivering reliable protection for motors, feeders, and other 3‑phase loads in commercial and light industrial installations. With a bolt‑on design, it supports straightforward installation and secure mounting in compatible Siemens panels, helping minimize downtime during retrofit projects.

Ideal use cases

• Panel retrofits or upgrades in commercial facilities
• Replacement of aging or failed 3‑pole, 240 V protection devices
• Repair work in service or distribution panels that require a precise 200 A, 3‑pole unit
• New equipment installations where Siemens QJ3B20000S01 matches existing specifications

Installation and compatibility considerations

Before ordering, verify that your panel or enclosure accepts bolt‑on, 3‑pole breakers and that the QJ3B20000S01 matches your existing protection scheme. The part number is the most reliable reference for compatibility, so cross‑check it against your panel’s documentation to ensure a seamless fit and correct ratings.