Siemens | QJ23B070A02 | Circuit Breaker | 70A | 3-Pole | 240V | Bolt-On

Meet the Siemens QJ23B070A02 circuit breaker—a precise, bolt-on protection device designed for 240V, 3-pole systems with a 70A rating. Engineered for maintenance, retrofit, and replacement projects, this unit delivers dependable performance when you need to restore or upgrade your electrical protection without fuss.

Key reasons this model stands out:

• Exact model fit: Identified by part number QJ23B070A02, ensuring compatibility with Siemens panels that require this specification.
• 70A protection: Adequate current rating for medium-to-heavy load circuits common in commercial and industrial settings.
• 3-Pole configuration: Ideal for 3-phase 240V systems, providing coordinated interruption across all conductors for safer, more reliable protection.
• Bolt-On mounting: Secure, rugged installation that simplifies retrofit and replacement tasks, reducing downtime and service disruption.
• Best reference for compatibility: The part number is the most reliable indicator of fit; always verify against your panel labeling and required ratings before ordering.

Specifications at a glance

• Amperage: 70A
• Poles: 3-Pole
• Voltage: 240V
• Mounting: Bolt-On
• Part Number: QJ23B070A02

Ideal use cases

• Retrofit projects where a Siemens 3-pole, 240V breaker in the 70A class is required
• Maintenance replacements for aging panels and control boards
• Commercial or light industrial electrical assemblies needing reliable, coordinated 3-phase protection

Why choose Siemens for your protection needs? This QJ-series breaker delivers consistent, reliable shutoff across all poles, helping minimize electrical faults and downtime. When selecting a replacement, use the QJ23B070A02 as your primary reference to align with panel compatibility, and always confirm fit and ratings before finalizing your order.