A1B370 - 70 Amp Circuit Breaker

A1B370 - 70 Amp Circuit Breaker

The A1B370 Circuit Breaker delivers dependable protection for electrical systems that demand higher current capacity. With a 70 A rating and a 3‑pole bolt-on design, this thermal‑magnetic breaker offers trustworthy defense against overloads and short circuits. Its 10,000 A interrupting capacity (A.I.C.) at 240 VAC gives you the confidence that, under fault conditions, the breaker will respond quickly and effectively — helping safeguard wiring and connected equipment while prolonging the lifespan of your installations.

Key Features and Benefits

• High‑Capacity 70 Amp Rating: Built for systems drawing significant current, the A1B370 handles heavy loads without strain, making it a reliable choice for demanding circuits.
• 3‑Pole Bolt‑On Design: Simple to install and mount securely, this configuration supports three-phase systems or multiple circuits requiring unified protection.
• 10 kA @ 240 VAC Interrupting Capacity: Offers strong protection against short circuits and overload events, reducing risk of damage or downtime.
• Thermal‑Magnetic Trip Mechanism: Combines both thermal and magnetic trip response to precisely detect overloads and sudden surges, delivering dependable fault protection.

Technical Specifications

• Poles: 3
• Amperage: 70 A
• Interrupting Capacity (A.I.C.) / Voltage: 10,000 A @ 240 VAC
• Frame Type: A1B
• Dimensions:
  • Width: 2.25 inches
  • Length: 6.00 inches
  • Depth: 2.31 inches
• Weight: 3.10 lb
• Mounting: Bolt‑on

Material Compliance and Certifications

• This circuit breaker is built with high‑quality materials designed to meet or exceed standard industry requirements. It undergoes manufacturing and inspection processes that comply with relevant regulatory certifications, ensuring safe and consistent performance for residential, commercial, and light industrial installations.

Where It Works Best

• The A1B370 shines in settings that demand dependable, heavy‑duty circuit protection. It’s an excellent fit for multi‑phase systems, commercial power panels, small industrial distribution boards, or any setup with substantial electrical loads — including HVAC units, backup generators, or heavy machinery circuits. Its combination of full‑scale amperage support, thermal-magnetic protection, and high A.I.C. rating makes it a strong choice when safety, reliability, and peace of mind matter most.