Siemens QJ23B070L 70A 3P 240V Circuit Breaker | AmpState

The Siemens QJ23B070L is a purpose-built circuit breaker designed to protect panelboards, load centers, and electrical distribution networks with precision. With a direct part-number match for streamlined maintenance and replenishment, this 70 A, 3-pole device helps keep commercial and industrial electrical systems running smoothly.

Why this specific model matters: when every component in your distribution chain must align exactly, selecting the QJ23B070L minimizes compatibility risk and downtime. It’s the reliable choice for teams that rely on consistent Siemens parts to maintain, retrofit, or expand their electrical infrastructure.

• Three-pole design for 3‑phase 240V systems provides coordinated protection across all legs of a 240V distribution network.
• 70 A rating delivers robust overcurrent protection for feeders and branch circuits without unnecessary tripping.
• Direct part-number match simplifies inventory management and service calls, reducing guesswork during replacements.
• Durable Siemens engineering built to withstand the demands of panelboards and load centers in active electrical rooms.
• Versatile for panelboards and load centers designed to integrate into existing electrical distribution layouts with minimal modification.
• AmpState availability means you can source, stock, or verify fit efficiently—assistance available to confirm compatibility with your equipment.

Ideal use cases include routine maintenance swaps, spare‑parts inventory for panel builders, and retrofit projects where exact part continuity is essential. It’s well-suited for any 3‑phase 240V installation that requires dependable protection and straightforward compatibility with Siemens gear.

Key specifications

• Part Number: QJ23B070L
• Manufacturer: Siemens
• Amperage: 70 A
• Poles: 3
• Voltage: 240 V
• Product Type: Circuit Breaker

If you’re unsure about fit, send us a message—we’ll help confirm whether the QJ23B070L matches your panel or load center’s requirements and guide you to a precise, reliable replacement path.