SSAC-SYMCOM HLMUDRAAA Voltage Monitoring Relay
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SSAC-SYMCOM HLMUDRAAA Voltage Monitoring Relay
SSAC-SYMCOM HLMUDRAAA Voltage Monitoring Relay
Part #:HLMUDRAAA
SKU #: 2188588
Key Features
Part #:HLMUDRAAA
SKU #: 2188588
Brand: Littelfuse
Contact Configuration: DPDT 2-Form C
Dimensions: 3 in H x 2 in W x 1.64 in D
Frequency Rating: 50/60, 50/60 Hz
Series: HLMU
Terminal Type: Screw
- Proprietary microcontroller based circuitry, constant monitoring to protect against phase loss, phase reversal, over, under and unbalanced voltage, over and under frequency
- Universal line voltage range, flexibility to work in 200 to 480 VAC applications
- DIN rail (35 mm) or surface mounting, installation flexibility
- LED indication provides diagnostics of relay, fault and time delay status
- Encapsulated, protects against shock, vibration and humidity
- Finger safe terminal blocks, meets IEC 61000 safety requirements
- With adjustable restart delay on restore
SSAC-SYMCOM HLMUDRAAA Voltage Monitoring Relay
Littelfuse SSAC Voltage Monitoring Relay, 3-Phase Isolated Electro Mechanical, Series: HLMU, 200 to 480 VAC, 50/60 Hz, DPDT 2-Form C, DIN Rail/Surface Mount, Screw Terminal, 1 to 30 s Trip Delay, 3 in H x 2 in W x 1.64 in D
Additional Description: LTFS-HLMUDRAAA 3 PHASE VOLTAGE MONITOR
Catalog Description: The HLMU Series is a universal voltage, encapsulated, 3-phase voltage monitor. It continuously measures the voltage of each of the three phases with microcontroller accuracy and compares the value to preset trip points. It separately senses phase reversal and loss; over, under and unbalanced voltages; and over or under frequency. Protection is assured during periods of large average voltage fluctuations, or when regenerated voltages are present. The unit trips within 200ms when phase loss is detected. Adjustable time delays are included to prevent nuisance tripping and short cycling of sensitive equipment. The isolated, 10A, DPDT relay contacts trip when a phase voltage exceeds the trip limits for the trip delay. Nominal line voltage, voltage unbalance, and time delays are knob adjustable. The phase loss setpoint and the acceptable frequency range are fixed. Both delta and wye systems can be monitored; no connection to neutral is required. See datasheet for operation details.