Split-Core Current Switch, 2.5-135A

APPLICATIONS

The H908 is a current-sensitive switching device that monitors current (amperage) in the conductor passing through it. A change in amperage in the monitored conductor that crosses the switch (setpoint) threshold plus the hysteresis value causes the resistance of the FET status output to change state, similar to the action of a mechanical switch. In this model, the setpoint is adjustable through the action of a twenty (20) turn potentiometer (see the CALIBRATION section). The status output is suitable for connection to building controllers or other appropriate data acquisition equipment operating at up to 30 volts. The H908 requires no external power supply to generate its output.

The H908 housing offers unprecedented mounting flexibility. The mounting bracket can be attached in three different places. Additionally, the bracket is compatible with the Veris AH01 DIN Rail clip, allowing DIN mounting.

FEATURES & BENEFITS

• Sensor Power: Induced from the monitored conductor
• Amperage Range: 2.5 to 135 A continuous
• Status Output Ratings: N.O. 1.0 A@30 VAC/DC, not polarity sensitive
• Insulation Class: 600 VAC RMS (UL); 300 VAC (CE)
• Setpoint: Adjustable, 2.5 A or less
• Frequency Range: 50/60 Hz
• Temperature Range: -15° to 60°C (5° to 140°F)
• Humidity Range: 10-90% RH non-condensing
• Hysteresis: 10% typical
• Off State Resistance: Open switch represents >1 MΩ
• On State Resistance: Closed switch represents < 200 mΩ
• Terminal Block Wire Size: 24 to 14 AWG (0.2 to 2.1 mm2)
• Terminal Block Torque: 3.5 to 4.4 in-lbs (0.4 to 0.5 N-m)
• Agency Approvals: UL508 open device listing, CE: EN61010-1
• Installation Category: Cat. III, pollution degree 2