Description

The Siemens SENTRON 3VM1 is a reliable and versatile molded case circuit breaker designed for essential power distribution. This specific configuration, featuring the TM220 trip unit, offers the flexibility of adjustable thermal protection to accommodate specific load requirements, making it well-suited for industrial and commercial sub-distribution systems.

Key Features:

ATFM (Adjustable Thermal / Fixed Magnetic): The TM220 trip unit features an adjustable thermal overload ($I_r$) setting. This allows users to precisely calibrate the breaker to the connected load, ensuring better protection and fewer nuisance trips compared to fixed-setting alternatives. The magnetic short-circuit protection ($I_i$) remains fixed for consistent, high-speed fault interruption.
Balanced Performance: With an ultimate breaking capacity ($I_{cu}$) of 25 kA, this breaker provides a robust safety margin for typical electrical distribution panels.
Operational Reliability: The $I_{cs}$ rating of 75% ensures that the device maintains high durability even after clearing a significant fault, which is a key advantage for maintaining system uptime.
Compact and Ergonomic: The 3VM series is engineered for space-efficient installation, allowing for dense packing in control cabinets while maintaining clear, accessible toggle-switch operation for quick status identification.
System Integration: Compatible with a comprehensive range of internal accessories, such as auxiliary and alarm switches, facilitating easy integration into remote monitoring or control architectures.