NEB1B070B - 70 Amp Circuit Breaker

NEB1B070B - 70 Amp Circuit Breaker

The Siemens NEB1B070B is a high-quality, panelboard‑mount circuit breaker engineered for dependable protection in both residential and commercial electrical systems. This single‑pole breaker features a thermal‑magnetic trip unit that reacts to both prolonged overloads and sudden short circuits, ensuring your wiring and equipment remain safe under varying electrical conditions. Rated for 70 amps and built with an EG frame, it delivers a high interrupting capacity — 22 kAIC at 347 V and 35 kAIC at 277 V — giving you solid fault-current protection where it matters most. With compact dimensions and straightforward wiring compatibility, this breaker makes installation and future maintenance easier.

Key Features and Benefits

• Thermal‑Magnetic Trip Unit: Protects circuits from overloaded wires and sudden short circuits by combining time-based (thermal) and instantaneous (magnetic) response.
• High Breaking Capacity: Handles fault currents up to 22 kAIC (347 V) or 35 kAIC (277 V), offering strong protection for demanding residential or light commercial loads.
• Flexible Wiring Options: Comes with load-side lugs (TA1EG10), supporting copper or aluminum conductors from 8 up to 1/0 AWG for easier installation.
• EG Frame Design: Compact panel‑mount configuration saves space and streamlines integration into existing load centers or panelboards.

Technical Specifications

• Frame Type: EG Frame
• Trip Mechanism: Thermal‑Magnetic
• Poles: Single‑Pole
• Current Rating: 70 A
• Interrupting Capacity:
  • 22 kAIC @ 347 V
  • 35 kAIC @ 277 V
• Wire Range: 8 – 1/0 AWG (Copper or Aluminum)
• Dimensions:
  • Width: 1 in
  • Height: 5.5 in
  • Depth: 3 in
• Weight: 1.257 lb

Material Compliance and Certifications

• UL-Listed: The Siemens NEB1B070B is UL‑Listed, meaning it has undergone rigorous testing and meets widely accepted safety standards for circuit breakers. This certification offers assurance that the breaker performs reliably under normal and fault conditions, aligning with safety requirements for both residential and commercial electrical systems.

Where It Works Best

• This 70 A circuit breaker excels in situations where reliable overload and short‑circuit protection are non‑negotiable. It’s a strong fit for residential panel upgrades, small commercial load centers, or branch-circuit panels serving lighting, HVAC, or moderate power equipment. Its high fault‑current capacity makes it especially handy in systems where fault currents may spike, while its compact size and wiring flexibility simplify installation in tight panel spaces.