Siemens NGG3B040 - 40 A, 600 V, 3-Pole Circuit Breaker | AmpState

Introducing the Siemens NGG3B040 — a 40A, 600V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit protection for panelboards and load centers. Built for reliability in residential, commercial, and light industrial settings, this unit is a purpose-built solution when space and performance matter.

Equipped with a thermal-magnetic trip unit, the NGG3B040 provides stable, repeatable protection against overloads and short circuits. This means fewer nuisance trips and more consistent fault protection, helping keep critical equipment and lighting circuits energized when you need them most.

• Compact molded-case design: maximizes panel space without compromising protection or ease of installation.
• Thermal-magnetic trip: combines overload protection with instantaneous short-circuit response for reliable safety performance.
• 3-pole configuration: ideal for three-phase systems and streamlined wiring in panelboards and switchgear.
• OEM compatibility: designed to partner with matching Siemens panelboards and load centers for seamless integration.
• Rated 40A at 600V: suitable for higher-voltage branch circuits common in commercial and light-industrial applications.
• Application versatility: a practical choice for protecting distribution circuits across residential, commercial, and light-industrial deployments.

The Siemens NGG3B040 is a robust choice for technicians and facilities managers who require a trusted, code-compliant protection device within Siemens’ ecosystem. When upgrading or expanding a panel, this 3-pole molded case breaker offers precise protection, ease of replacement, and dependable coordination with OEM load centers.

Technical specifications

• Manufacturer: Siemens
• Part Number: NGG3B040
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 600V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Designed for compatibility with Siemens OEM load centers and panelboards, the NGG3B040 from AmpState provides a reliable path to safe, continuous operation in everyday electrical environments. For best results, pair with the appropriate Siemens panel system and verify that your installation voltage and phase configuration align with the 600V, 3-pole rating.