The Schneider Electric TM-D Thermal-Magnetic Trip Unit is engineered for reliable overcurrent and short-circuit protection in distribution systems, particularly those powered by transformers. This trip unit is designed to safeguard electrical equipment and circuits from damaging fault conditions, ensuring operational continuity and safety in demanding industrial and commercial environments. Its robust construction and precise tripping characteristics make it a critical component for maintaining system integrity.

Technical details

• Series: TM-D
• Protection Type: Thermal-Magnetic Trip Unit
• Overload Protection Mechanism: Bimetal strip for thermal overload detection.
• Short-Circuit Protection Mechanism: Magnetic element for instantaneous short-circuit detection.
• Application Focus: Designed for distribution systems, especially those supplied by transformers.
• Functionality: Provides adjustable thermal overload settings and fixed or adjustable magnetic trip settings (verify specific model for adjustability).
• Compatibility: Intended for use with Schneider Electric circuit breakers and switchgear designed to accept TM-D trip units.
• Environmental Rating: Suitable for industrial environments (specific IP rating and operating temperature range should be verified against manufacturer datasheet).

Applications & compatibility

This Schneider Electric TM-D trip unit is commonly employed in industrial power distribution panels, motor control centers, and transformer protection applications. It is essential for protecting equipment such as motors, transformers, and feeders from sustained overloads and sudden short circuits, ensuring the reliable operation of machinery in sectors like manufacturing, processing plants, and utility infrastructure.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider TM-D trip unit or contact our technical team for cross-reference assistance with compatible distribution components.