Industrial Controller
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Infinite Innovation, the Future of Industrial Control Systems
Infinite Innovation, the Future of Industrial Control Systems
PRODUCT POSITION:HOMEPRODUCT—TO-2-1/E
TO-2-1/E
Category Parameter Specification / Typical Value Application & Configuration Protected Circuit Signal circuits (e.g., 4-20 mA, digital I/O) Circuit Configuration 2-pole (Line-to-Line and Line-to-Ground protection) Connection In-series with the signal line Electrical Characteristics Nominal Voltage 8 - 24 V DC (Typical for signal applications) Max. Continuous Operating Voltage (Uc) ~30 V DC (Please verify in datasheet) Nominal Current (In) Up to 250 mA (Suitable for most signal loops) Voltage Drop < 1.5 V (Low, to minimize impact on the signal) Surge Protection Performance Standards Complies with IEC 61643-21 Nominal Discharge Current (In) 5 kA (8/20 μs waveform) Max. Discharge Current (Imax) 10 kA (8/20 μs waveform) Protection Level (Up) < 40 V (at In, typical for this class) General Data Mounting 35 mm DIN Rail Connection Type Screw terminals Housing Material Plastic (PA 6.6) Operating Temperature -40 °C to +80 °C Status Indication None (This is a basic model without visual fault indicator)
DESCRIBE
The Eaton TO-2-1/E is a compact, two-pole surge protection device designed to protect sensitive electronic signal and data lines from transient overvoltages caused by lightning strikes, electrostatic discharge, or switching operations in industrial systems. It is installed in series with the signal line on a standard DIN rail within a control cabinet. Its primary function is to establish equipotential bonding by diverting surge currents to ground, thereby safeguarding valuable equipment like PLCs, transmitters, and sensors connected to loops such as 4-20 mA analog signals.
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