Siemens NGB3B040B Molded Case Circuit Breaker – 40A – 3-Pole / 3-Phase – 600V – 25kA @ 480V – Bolt-On – VL Series NGB

The Siemens NGB3B040B is a 40A, 3-pole, 3-phase molded case circuit breaker from the Siemens VL Series, Type NGB. It features thermal-magnetic protection with Long-Time and Instantaneous (LI) trip functions.

The NGB3B040B is rated for 600V and provides a 25kA interrupting rating at 480V with standard interrupting capacity. It is designed for panelboard mounting with a bolt-on connection, includes load-side lug terminals, and is suitable for reverse-feed applications.

Specifications:

• Manufacturer: Siemens
• Product Type: Molded Case Circuit Breaker
• Product Family: VL Series
• Series: NGB
• Type: NGB
• Catalog No.: NGB3B040B
• Current Rating: 40A
• Number of Poles: 3-Pole
• Phase: 3-Phase
• Voltage Rating: 600V
• Interrupting Rating: 25kA @ 480V
• Interrupting Capacity: Standard
• Protection Type: Thermal-Magnetic
• Trip Functions: Long-Time and Instantaneous (LI)
• Mounting Type: Panelboard Mounting
• Connection Type: Bolt-On
• Reverse Feed: Suitable for Reverse-Feed Applications
• Terminal Type: Load-Side Lug Terminals
• Application: Electrical Distribution and Overcurrent Protection

Part Numbers & Identification:

• Manufacturer Part Number (MPN): NGB3B040B
• Catalog Number: NGB3B040B
• Model: NGB3B040B
• Product Family: Siemens VL Circuit Breakers
• Series: NGB
• Type: NGB
• Brand: Siemens
• Manufacturer: Siemens
• Product Type: Molded Case Circuit Breaker
• Breaker Configuration: 3-Pole, 40A
• UPC:783643414303

Compatibility:

Designed for use with compatible Siemens VL Series Type NGB electrical distribution equipment that accepts bolt-on molded case circuit breakers. The NGB3B040B provides 40A, 3-pole thermal-magnetic protection for compatible 600V applications.

The breaker features 25kA interrupting capacity at 480V, Long-Time and Instantaneous (LI) trip functions, panelboard mounting, load-side lug terminals, and suitability for reverse-feed applications.

Always verify the specific panelboard or electrical equipment model, approved breaker type, system voltage, available fault current, pole configuration, trip requirements, terminal arrangement, reverse-feed requirements, and installation specifications before installation.

Certifications:

• Siemens VL Series
• NGB Series
• 40A Rated
• 3-Pole / 3-Phase
• 600V Rated
• 25kA @ 480V Interrupting Rating
• Standard Interrupting Capacity
• Thermal-Magnetic Protection
• Long-Time and Instantaneous (LI) Trip
• Panelboard Mounted
• Bolt-On Connection
• Suitable for Reverse-Feed Applications
• Load-Side Lug Terminals

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