Protection Relays Voltage Monitoring Relays 201A-AU SERIES 3-Phase Voltage/Phase Monitor Description The 201A-AU is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190480 V ac, 50/60 Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200 V and 400 V range. Additional adjustment knobs allow the user to set a 130 second trip delay, a manual restart or 1500 second restart delay and a 28% voltage unbalance trip point. The model 201A-AU includes advanced single LED diagnostics, where color and light patterns distinguish between faults and normal conditions. This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the 201A-AUs output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels for a specified amount or TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU WITH MOTOR CONTROL restart delay time (or manual reset). Wiring Diagram L1 TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU Features & Benefits L2 201A-AU WITH MOTOR CONTROL WITH MOTOR CONTROL L3 FEATURES BENEFITS L1 Proprietary Constant monitoring of loss of any phase, low L2 microcontroller voltage, high voltage, voltage unbalance, phase L3 based circuitry reversal, rapid cycling, harmful power line conditions Compact design for 8-pin Allows flexiblility in panel installation DIN rail or surface mount Auto-sensing wide Automatically senses system voltage between voltage range 190480 V ac. Saves setup time. Advanced LED Quick visual indicator for cause of trip. diagnostics Adjustable voltage Allows compatibility with a variety of motors and unbalance trip setting reduces nuisance tripping. Adjustable trip & restart Prevent nuisance tripping due to rapidly fluctuating delay settings power line conditions. TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU Accessories WITH ALARM CONTROL 201A-AU WITH ALARM CONTROL OT08PC Octal 8-pin Socket TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU L1 8-pin 35 mm DIN rail or surface mount. Rated at L2 WITH ALARM CONTROL 10A 600 V ac. Surface mounted with two 6 L3 screws or snaps onto a 35 mm DIN rail. L1 L2 L3 Ordering Information LINE MODEL DESCRIPTION LIGHT HORN VOLTAGE 201A-AU 190480 V ac DIN rail or surface mountable LIGHT HORN 201575-AU 475600 V ac DIN rail or surface mountable 201A-AU-OT 190480 V ac Sold with OT08PC socket 201-575-AU-OT 475600 V ac Sold with OT08PC socket 2020 Littelfuse, Inc. Rev: 2-A-061220Rev: 1-A-062716 wwwwww.littelfuse.com/201aau.littelfuse.com/Protection Relays Voltage Monitoring Relays 201A-AU SERIES Standards Passed Specifications Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6 kV contact, 8 kV air Frequency 50/60 Hz Radio Frequency Functional Characteristics Immunity, Radiated 150 MHz, 10 V/m Low Voltage (% of setpoint) Fast Transient Burst IEC 61000-4-4, Level 3, 3.5 kV input power Trip 90 % 1 % and controls Reset 93 % 1 % Surge High Voltage (% of setpoint) IEC IEC 61000-4-5, Level 3, 4 kV line-to-line Trip 110 % 1 % Level 4, 4 kV line-to-ground Reset 107 % 1 % ANSI/IEEE C62.41 Surge and Ring Wave Compliance to Voltage Unbalance (NEMA) a level of 6 kV line-to-line Trip 28 % adjustable Hi-potential Test Meets UL 508 (2 x rated V +1000 V for 1 min.) Reset Trip Setting Minus 1 % (58%) Safety Marks Trip Setting Minus 0.5 % (24%) UL (OT08PC octal Trip Delay Time socket required) UL 508 (File E68520) High, Low and Enclosure Polycarbonate Unbalanced Voltage 130 seconds adjustable Dimensions H 44.45 mm (1.75) W 60.325 mm (2.375) Single-Phasing Faults 1 second fixed D 104.775 mm (4.125) (with socket) Restart Delay Time Weight 0.7 lb. (11.2 oz., 317.51 g) After a Fault Manual, 1500 seconds adj. Mounting Method DIN rail or surface mount After a Complete (plug in to OT08PC socket) Power Loss Manual, 1500 seconds adj. Socket Available OT08PC (UL Rating 600 V) Output Characteristics Output Contact Rating The 600 V socket can be surface mounted or installed on DIN Rail. (1-Form C) Note: Manufacturers recommended screw terminal torque for the OT Series Octal Sockets is Pilot Duty 480 VA 240 V ac, B300 12 in.-lbs. General Purpose 10 A 240 V ac Must use Model OT08PC socket for UL Rating General Characteristics Ambient Temperature Range Operating -40 to 70C (-40 to 158F) Storage -40 to 80C (-40 to 176F) Trip & Reset Accuracy 1 % Maximum Input Power 5 W Relative Humidity 1095 %, non-condensing per IEC 68-2-3 Terminal Torque 12 in.-lbs. (for OT08-PC socket) Wire Gauge 12-22 AWG solid or stranded 2020 Littelfuse, Inc. Rev: 1-A-062716Rev: 2-A-061220 wwwwww.littelfuse.com/.littelfuse.com/201aau