Allen-Bradley 140G-H2C4-C70 Molded Case Circuit Breaker

Allen-Bradley 140G-H2C4-C70 Molded Case Circuit Breaker (MCCB)

Product Overview

The Allen-Bradley 140G-H2C4-C70 is a Bulletin 140G Molded Case Circuit Breaker (MCCB) from Rockwell Automation, designed for industrial power distribution and circuit protection. It provides reliable thermal-magnetic protection against overload and short-circuit faults and is commonly used in motor control centers (MCC), industrial control panels, and machinery power systems.

Main Specifications

• Manufacturer: Allen-Bradley (Rockwell Automation)
• Model: 140G-H2C4-C70
• Product Type:
  • Molded Case Circuit Breaker (MCCB)
• Series:
  • Bulletin 140G

Electrical Specifications

• Frame Size:
  • H Frame
• Rated Current:
  • 70 A
• Number of Poles:
  • 4 Pole (4P)
• Protection Type:
  • Thermal-Magnetic (T/M)
• Trip Unit:
  • Fixed Thermal / Fixed Magnetic (TMF)
• Thermal Trip:
  • 70 A
• Magnetic Trip:
  • 700 A
• Interrupting Rating:
  • 25 kA class
• Rated Voltage:
  • Up to 600 VAC (UL/CSA applications)
• Frequency:
  • 50/60 Hz
• Insulation Voltage:
  • 1000 VAC (IEC)

Mechanical Specifications

• Operating Mechanism:
  • Toggle handle
• Mounting:
  • Fixed mounting
• Connection Type:
  • Front screw connection
• Enclosure Protection:
  • IP40
• Dimensions:
  • Approx. 130 × 120 × 82.5 mm
• Weight:
  • Approx. 1.6 kg

Advantages & Features

• Provides dependable overload and short-circuit protection
• Thermal-magnetic trip technology for fast fault response
• High interrupting capability for industrial power systems
• Compact molded case design for control cabinet installation
• Suitable for motor branch circuit protection
• Supports optional accessories such as auxiliary contacts and shunt trips
• Designed for harsh industrial environments

Applications

• Industrial electrical distribution panels
• Motor Control Centers (MCC)
• Factory automation systems
• Machine power protection
• Pump and fan control systems
• Manufacturing equipment
• Industrial control cabinets

Important Notes

• Confirm pole number, frame size, and rated current before replacement.
• This breaker is intended for power circuit protection, not PLC control signal circuits.
• Verify short-circuit current requirements of the installation.
• Additional accessories (auxiliary contacts, undervoltage release, shunt trip) must be ordered separately if required.
• Installation should follow local electrical safety standards.