SIEMENS NGB1B040V Breaker 1P 40A 347V 14KA - Electrical Circuit Protection

The Siemens NGB1B040V is a single-pole circuit breaker rated at 40 amps and 347 volts AC, designed for use in Siemens panelboards and switchboards. This breaker provides reliable overcurrent protection with a 14 kA interrupting rating, suitable for commercial and industrial electrical distribution applications. It is intended for use with Siemens certified components and features load-side lugs for secure wire connections.

Specifications

• Manufacturer: Siemens
• Manufacturer Part #: NGB1B040V
• Number of Poles: 1
• Current Rating: 40 A
• Voltage Rating: 347 V AC
• Interrupting Rating: 14 kA RMS symmetrical
• Product Weight: 0.7760 lbs
• Wire Size Range: #14 to #10 AWG aluminum (15-30 A), #8 AWG aluminum or copper (15-30 A), #8 to #4 AWG copper/aluminum (35-125 A)
• Torque for Lugs: 35 to 55 in-lb depending on wire size
• UL/CSA/NOM/IEC Certified

Features

• Load-side lugs supplied as standard for easy wiring
• Compatible exclusively with Siemens panelboard and switchboard designs
• Includes retainer clips for secure mounting
• Meets UL 489 and IEC 60947-2 standards for circuit breakers
• Suitable for use with copper or aluminum conductors
• Designed for 60/75¬∞C wire temperature rating
• Lockout and safety instructions included for installation and maintenance

Downloads & Links

• Spec Sheet
• Spec Sheet
• Spec Sheet