Siemens QJ23B08000S01 80A Circuit Breaker 3-Pole 240V

Engineered for reliability in three‑phase electrical systems, the Siemens QJ23B08000S01 Circuit Breaker delivers 80A of protection in a 3‑pole, 240V configuration. Identified by part number QJ23B08000S01, it's built for maintenance, retrofit, and replacement projects where exact Siemens compatibility matters.

Key reasons to choose this QJ‑series breaker:

• Exact fit via part number: The QJ23B08000S01 reference ensures compatibility with Siemens panels that accept the QJ family, reducing guesswork and field adjustments.
• Balanced three‑phase protection: A 3‑pole design protects all phases in a 240V system, helping prevent uneven loads and motor damage.
• 80A current rating: Suitable for circuits up to 80A, providing robust protection for medium‑current loads, feeders, and distribution branches.
• 240V operation: Designed for 3‑phase 240V distribution, common in commercial and light industrial panels.
• Maintenance‑friendly replacement: When a replacement is needed, swapping in this exact Siemens part minimizes downtime and configuration issues.

Ideal use cases

• Maintenance and service on Siemens distribution panels that require a QJ‑series 3‑pole breaker.
• Retrofits where upgrading to a modern, compatible QJ breaker improves safety and reliability.
• Replacement of a failed breaker in 240V, 3‑phase circuits in commercial facilities, workshops, or light industrial environments.

Compatibility and installation guidance

Notes: Confirm fit and ratings before ordering. The exact part number is the best reference for compatibility. If your panel labeling lists QJ‑type breakers with an 80A rating and 3 poles, this unit should align with your system.

Specifications at a glance

• Amperage: 80A
• Poles: 3‑Pole
• Voltage: 240V
• Part Number: QJ23B08000S01

Practical tips for best results

• Before pulling the old breaker, power down the panel and follow applicable lockout/tagout procedures.
• Verify that the panel accepts QJ‑series breakers and that the bus configuration matches the 3‑pole, 240V format.
• When installing, ensure conductors are correctly landed and the device seats firmly in the din rail or mounting rail specified by Siemens for the QJ family.