this Class 2 transformer serves as a reliable power source for critical low-voltage HVAC equipment

Rugged Construction: Built with industrial-grade materials to withstand high-cycle thermal stress and harsh furnace environments

A 50VA rating is the maximum capacity

This specific model features an integrated 10K Ohm NTC thermistor

Siemens Building Technology GBB161.1U Actuator 321142-301 this Class 2 transformer servesThe Siemens Building Technology GBB161. 1U Actuator is a heavy duty, direct coupled solution engineered for demand driven regulating in large scale HVAC systems. This modulating non spring return (NSR) actuator delivers a high 221 lb in (25 Nm) torque, making it suitable for managing supply air, return air, and face and bypass dampers in both VAV and CV installations. Operating on a 24VAC standard power supply, it responds to a precise 0 10VDC control