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February 2025 - BLOCK Open Core Control Transformers
We are pleased to announce the new BLOCK CT and USTE series open core control transformers provide a flexible solution for stepping down a wide range of voltages from 208 to 600 VAC.
- The BLOCK CT series is made in the USA, offering a rugged design specifically engineered for isolation, lighting, or signaling systems. It is available with a 240/480 or 600 VAC primary and a 24 or 120 VAC secondary. Ratings range from 50 to 2500 VA, providing a cost-effective solution to guarantee uninterrupted power delivery in various applications. Fused versions are available.
- The BLOCK USTE series provides a versatile solution for a wide range of input voltages, allowing OEMs and system integrators to save time and reduce costs by standardizing on a single model. Available in ratings from 40 to 3200 VA, they feature low inrush current, tool-free push-in wire terminals, and thirteen jumper selectable primary inputs from 208 to 600 VAC. In addition, the 12/24 VAC models comply with safety standards to ensure a safe power supply for SELV (Safety Extra Low Voltage) circuits.
For pricing and additional information, please use the link above or below:

February 2025 - BLOCK Open Core Control Transformers