Schneider G12E3A40 | Circuit breaker, GoPact MCCB 125, 3 poles, 15kA at 415VAC, 40A rating, TMD trip unit, adjustable thermal protection



Technical Specifications G12E3A40

• Product Name: Schneider Electric G12E3A40

• Product Type: Molded Case Circuit Breaker (MCCB)

• Series: GoPact MCCB 125

• Number of Poles: 3 poles

• Rated Current (In): 40 Amps

• Frame Size: 125 A

• Rated Operational Voltage (Ue): Up to 415 VAC

• Breaking Capacity (Icu): 15 kA at 415 VAC

• Trip Unit Type: TMD (Thermal Magnetic Trip Unit)

• Thermal Protection: Adjustable — for fine-tuned overload protection

• Magnetic Protection: Fixed — for fast-acting short-circuit protection

• Rated Frequency: 50/60 Hz

• Mounting Type: Fixed (typically panel-mounted)

• Compliance Standards: IEC 60947-2

• Utilization Category: AC-22A — general purpose for mixed resistive and inductive loads

Key Features G12E3A40

• Enhanced Protection for Mid-Range Loads
  The 40A rating makes this MCCB ideal for medium-load circuits, ensuring reliable operation and safety for a variety of applications.

• Adjustable Thermal Trip Setting
  Provides flexibility to match protection to actual operating conditions, improving system coordination and reducing nuisance tripping.

• Fixed Magnetic Trip Mechanism
  Ensures immediate disconnection under fault conditions, preventing damage to connected equipment.

• Compact and Robust Design
  Designed to save space in electrical panels while offering durability and long-term performance in demanding environments.

• Quick Installation & Maintenance
  Features front-access terminals and standard mounting dimensions, simplifying integration into existing systems.

• Trusted Quality & Cost-Efficiency
  Delivers Schneider Electric’s global reliability at a competitive cost with full adherence to international safety standards.

Applications G12E3A40

• Commercial Power Distribution
  Suitable for circuits supplying lighting, power sockets, and HVAC units in buildings such as offices, hotels, and retail stores.

• Industrial Machinery & Equipment
  Protects motors, compressors, and control systems that draw up to 40A under normal operation.

• Renewable Energy Systems
  Provides protection for AC-side components of solar or wind energy installations where moderate current is involved.

• Data Centers & IT Infrastructure
  Ensures reliable power delivery and protection for racks, distribution units, and communication systems.

• Healthcare & Institutional Buildings
  Used in electrical panels of hospitals, schools, and universities to protect key distribution lines and subsystems.

• Emergency Power & Backup Systems
  Ideal for 40A circuits fed by generators or UPS units, ensuring safe operation during power outages.