Siemens SHJD6B400LSI - 400 A, 3-Pole Circuit Breaker | AmpState

Discover dependable protection with the Siemens SHJD6B400LSI—a 400 A, 3-pole molded case circuit breaker engineered for reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for steady performance across residential, commercial, and light industrial settings, this MCCB is ready to safeguard your electrical system where precision matters most.

• Compact molded case design maximizes usable panel space, helping you fit more circuits in tighter panel layouts without compromising protection.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance by reacting to both overload and short-circuit conditions, reducing nuisance trips while maintaining safety.
• 3-pole configuration ideal for three-phase distribution, enabling effective protection of multi-phase feeders and equipment.
• 400 A amperage rating provides robust protection for high-demand circuits and large branch feeders, suitable for demanding installation environments.
• OEM-compatible design is built to work seamlessly with matching Siemens OEM loadcenters and panelboards, ensuring reliable fit and electrical coordination.
• Versatile application suitable for residential service panels, commercial electrical rooms, and light industrial distribution where dependable overcurrent protection is essential.

Why choose the Siemens SHJD6B400LSI in your electrical framework? Its combination of a compact form factor, a thermal-magnetic trip mechanism, and OEM compatibility translates to streamlined installation, predictable protection, and easier panel planning. Whether you’re upgrading an existing panel, designing a new installation, or stocking parts for service calls, this 400 A 3-pole MCCB delivers the performance you expect from Siemens.

Technical highlights at a glance

• Manufacturer: Siemens
• Part Number: SHJD6B400LSI
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 400 A
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Use cases to consider: protect large feeders in commercial panelboards, safeguard three-phase equipment in light industrial setups, or augment residential systems where higher-capacity distribution is required. With the SHJD6B400LSI, you gain a trusted Siemens solution that aligns with your panel architecture, reduces the risk of fault conditions cascading through the system, and supports long-term reliability in everyday electrical operations.