SENTRON 3VA MCCB, Thermal Magnetic Trip Unit - 3VA2040-5HN42-0AA0

Product Description

SENTRON 3VA MCCB, Thermal Magnetic Trip Unit – 3VA2040-5HN42-0AA0

The Siemens 3VA2040-5HN42-0AA0 is a high-performance Molded Case Circuit Breaker (MCCB) from the SENTRON 3VA2 series, designed to provide reliable protection for low-voltage electrical distribution systems. It ensures safe operation by protecting circuits against overload, short-circuit, and earth fault conditions, making it suitable for industrial, commercial, and infrastructure applications.

This MCCB belongs to the 3VA20 frame size (40 A class) and is equipped with an advanced ETU350 electronic trip unit (LSI – Long, Short & Instantaneous protection), offering precise and adjustable protection settings for selective coordination in complex electrical networks.

It is widely used in industrial switchboards, commercial distribution panels, OEM machinery, and critical power systems, where high breaking capacity, reliability, and compact design are essential.

🔹 Key Features

• Siemens SENTRON 3VA2 series MCCB
• Part Number: 3VA2040-5HN42-0AA0
• Rated current: 40 A
• 4-pole configuration
• Electronic trip unit: ETU350 (LSI protection)
• High breaking capacity: 55 kA @ 415 V AC
• Adjustable overload range: 16–40 A
• Short-circuit protection with adjustable settings (Isd, Ii)
• Neutral conductor protection (adjustable OFF / 100%)
• Protection against overload, short circuit & earth fault
• Compact 3VA20 frame design for space-saving installation
• High mechanical and electrical endurance
• Fixed mounting type for panel integration
• Suitable for industrial-grade LT distribution systems
• Complies with IEC 60947-2 standards