NGB3B100B - 100 Amp Circuit Breaker

NGB3B100B - 100 Amp Circuit Breaker

The SIEMENS NGB3B100B circuit breaker delivers trustworthy and consistent protection for low‑voltage panelboards, whether you're upgrading an existing setup or building a new electrical installation. Built around a dependable thermal‑magnetic trip mechanism, this 100 A, 3‑pole breaker reacts swiftly to overloads and short circuits, helping prevent damage to wiring and equipment. With its significant interrupting capacity and compact footprint, it's a wise choice for commercial and industrial electrical systems where reliability and safety matter most.

Key Features and Benefits

• Reliable Overcurrent Protection: The integrated thermal‑magnetic trip unit keeps your circuits safe by automatically interrupting power during overloads or fault conditions.
• High Interruption Capacity: Rated at 14 kAIC at 600Y/347 V and 25 kAIC at 480Y/277 V, this breaker can handle demanding load conditions without hesitation.
• Compact Footprint: At just 3 × 5.4 × 2.8 inches, it installs easily into standard panelboards — ideal when space is limited.
• Broad Wiring Flexibility: Compatible with copper or aluminum conductors ranging from 8 AWG to 1/0 AWG, giving you flexibility for different wiring scenarios.
• Safety Assured: UL listing confirms compliance with industry safety standards, giving you confidence in its performance and installation.

Technical Specifications

• Amperage: 100 A
• Poles: 3
• Voltage Ratings: 600Y/347 V, 480Y/277 V
• Interrupting Capacity (AIC): 14 kAIC @ 600Y/347 V; 25 kAIC @ 480Y/277 V
• Trip Unit Type: Thermal‑Magnetic
• Load‑Side Lugs: TC1GG20
• Wire Range: 8 AWG – 1/0 AWG (copper or aluminum)
• Dimensions:
  • Width: 3.0 inches
  • Length: 5.4 inches
  • Depth: 2.8 inches
• Weight: 2.615 lb

Material Compliance and Certifications

• UL Listed: Certified to meet recognized safety standards for circuit breakers, ensuring dependable operation in demanding environments.
• RoHS Compliant: Manufactured in accordance with the RoHS directive (since July 1, 2006), meaning it is free of hazardous substances.
• REACH Compliant: Conforms to regulations for chemical safety, providing added assurance about environmental and health considerations.

Where It Works Best

• This circuit breaker shines in commercial and industrial panelboards — from office buildings and retail locations to factories and warehouses. It's especially well-suited where you need a reliable 100 A, 3‑pole solution capable of handling high currents and protecting multiple circuits at once. Whether you're replacing old breakers or building a new distribution panel, the NGB3B100B delivers the dependable protection and flexibility required in demanding electrical systems.