SENTRON 3VA MCCB, Thermal Magnetic Trip Unit - 3VA2040-4HM42-0AA0

Product Description

SENTRON 3VA MCCB, Thermal Magnetic Trip Unit – 3VA2040-4HM42-0AA0

The Siemens 3VA2040-4HM42-0AA0 is a high-performance Molded Case Circuit Breaker (MCCB) from the SENTRON 3VA2 series, designed for reliable protection of low-voltage electrical distribution systems. It ensures safe and stable operation by protecting circuits against overload, short-circuit, and earth fault conditions, making it suitable for industrial and commercial power applications.

This MCCB belongs to the 3VA20 frame size (40 A class) and is widely used in industrial switchboards, commercial distribution panels, infrastructure systems, and OEM panels, where high breaking capacity and dependable protection are required for critical electrical networks.

According to Siemens technical data, this model is equipped with a microprocessor-based trip unit (ETU330 LIG variant depending on configuration) and offers a high breaking capacity of up to 36 kA at 415 V AC, ensuring strong fault interruption performance in demanding environments.

🔹 Key Features

• Siemens SENTRON 3VA2 series MCCB
• Part Number: 3VA2040-4HM42-0AA0
• Rated current: 40 A
• 3-pole configuration
• Microprocessor-based trip unit (ETU type, configuration dependent)
• Breaking capacity: 36 kA @ 415 V AC
• Protection against overload, short circuit & earth fault
• Adjustable protection settings for better coordination
• Compact 3VA20 frame design for space-saving installation
• High electrical and mechanical endurance
• Fixed mounting type for panel integration
• Suitable for industrial-grade LT distribution systems
• Complies with IEC 60947-2 standards