Littelfuse SSAC HLMUDNAAN

The Littelfuse SSAC HLMUDNAAN is a 3-phase voltage monitor for 200-480 V AC motors. It protects against low voltage, high voltage, voltage unbalance, phase loss, phase reversal and over / under frequency. Sensing: Microcontroller; automatically senses the voltage range and 50 / 60 Hz; delta or wye, no neutral connection.

Trip / reset points: low voltage 88-92% of the adjusted line voltage (resets about 3% higher); high voltage 109-113% of the adjusted line voltage (resets about 3% lower); voltage unbalance 2-10% adjustable (resets about 0.7% lower).

Trip delay: 1-30 s adjustable (over / under voltage, unbalance, frequency); phase loss and reversal trip within 200 ms. Restart delay: None (0.6 s initialization delay at power-up). Reset: Automatic. Diagnostics: Bi-color LED: flashes green during the restart delay, green when the output is energized; flashes red during the trip delay, red when tripped; flashes red/green on phase reversal.

Output: 2 Form C (DPDT), isolated, 10 A resistive @ 240 VAC; 8 A resistive @ 277 VAC; 1/4 hp @ 120 VAC, 1/3 hp @ 240 VAC (NO). Mounting: Surface mount, one #10 screw (35 mm DIN rail with P1023-20 adapter), screw terminal. Dimensions: 76.7 x 50.8 x 41.7 mm (3.0 x 2.0 x 1.64 in), H x W x D.

It operates from -40 to +60 °C and can be stored from -40 to +85 °C.