Siemens JL3F400 400A 3P Circuit Breaker, Bolt-On | AmpState

Meet the Siemens JL3F400 400A 3P Bolt-On Circuit Breaker from AmpState—a rugged, dependable protection device engineered for panelboards, load centers, and distributed electrical networks. Delivering reliable overcurrent protection in a compact 3-pole package, it’s a trusted choice for commercial and industrial environments.

Engineered for straightforward installation, the bolt-on mounting provides a secure, vibration-resistant connection that speeds up replacement work and service upgrades. This makes it an ideal choice for replacement projects and for stocking spares that keep your bill of materials (BOM) aligned with the original part number.

• Amperage and poles: 400 A, 3 Poles (3P)
• Mounting: Bolt-On design for quick, robust installation
• Part identity: Siemens JL3F400; ensures precise BOM alignment with existing equipment
• Intended use: Panelboards, load centers, and general electrical distribution protection
• Ideal scenarios: Replacement projects, routine maintenance, and spare-stock strategies to minimize downtime
• Availability: Available from AmpState

Why this JL3F400 stands out: it’s not just about meeting a spec—it's about preserving the integrity of your protective scheme. With a Siemens-branded 400 A, 3-pole bolt-on breaker, you get consistent trip characteristics and coordinated protection across your distribution network. Stocking this part helps you respond quickly to outages or planned maintenance while keeping your BOM intact.

Practical use cases you’ll appreciate:

• Upgrading aging distribution panels that require a precise 3-pole, 400 A bolt-on breaker
• Maintaining spare parts inventories for industrial facilities or commercial campuses
• Retrofitting or refurbishing electrical rooms where Siemens equipment is predominant

Need guidance on compatibility? AmpState offers assistance to confirm fit based on part numbers and system requirements. Send a message to verify that the JL3F400 matches your panel and distribution scheme before purchasing, ensuring a seamless, downtime-minimized replacement.

Choose Siemens reliability and straightforward protection for your electrical distribution with the JL3F400 400A 3P Bolt-On Circuit Breaker—designed to keep systems safe, compliant, and performing at their best.