Trip unit for LS Electric TD-TS 100/800 series molded case circuit breakers, 24VAC/DC SHT AC/DC24V

Independent electromagnetic shunt trip for industrial automation systems

The SHT AC/DC24V shunt trip is a professional electromagnetic device designed for the remote control of LS Electric TD160-TS800 series molded case circuit breakers. It functions as an independent actuator module that mechanically activates the automatic disconnection mechanism of the circuit breaker upon application of a 24V AC or DC control voltage.

Operating parameters and technical characteristics

The device operates within a rated voltage range of 24 VAC/DC with a standard frequency of 45-65 Hz for AC power supply. Tripping occurs within the range of 0.7-1.1 × Un, ensuring stable operation under various power supply conditions. The shunt trip features an IP20 protection rating and compact dimensions of 70×65×65 mm with a weight of only 0.077 kg.

The design is based on electromagnetic technology with an automatic return of contacts to the initial position after each operating cycle. The device does not require external power to maintain its position - it operates in pulse mode, which eliminates continuous energy consumption.

Compatibility and mounting

The SHT AC/DC24V shunt trip is compatible with the full range of LS Electric TD160, TD250, TD400, TD630, and TS800 series circuit breakers. Mounting is performed mechanically on the front panel of the circuit breaker using standard device mounting components. Wire connection is carried out through dedicated terminals on the device housing.

Before installation, the circuit breaker model must be verified - the device is compatible only with the LS Electric TD-TS800 series and does not work with devices from other manufacturers or other series from the same supplier.

Industrial applications and functionality

The device finds wide application in industrial automation systems, where it enables safe remote load disconnection via control buttons, PLC controllers, or relay systems. It is ideal for applications such as production lines, conveyor belts, and extensive control cabinets requiring centralized power management.

It meets the requirements of international standards for switching and protective devices, operating within the temperature parameters specified for industrial automatic circuit breakers.