Protection Relays Voltage Monitoring Relays 201A SERIES 3-Phase Voltage/Phase Monitor Description The 201A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480 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. The 201A 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 201As output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels for a specified restart delay time. Features & Benefits FEATURES BENEFITS Wiring Diagram Proprietary Constant monitoring of single-phase, low voltage, 201A WITH MOTOR CONTROL microcontroller voltage unbalance, phase reversal, harmful power based circuitry line conditions. High voltage monitoring optional. 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 190 - 480 V ac. Saves setup time. Quick visual indicator for cause of trip. LED Advanced LED indications include: normal operation, power-up diagnostics restart delay, reverse-phase trip, unbalance/ single-phase trip, high/low voltage trip Accessories OT08PC Octal 8-pin Socket 8-pin 35 mm DIN rail or surface mount. Rated at 10 A 600 V ac. Surface mounted with two 6 screws or snaps onto a 35 mm DIN rail. 201A WITH ALARM CONTROL Ordering Information MODEL LINE VOLTAGE DESCRIPTION 201A 190480VAC DIN rail or surface mountable Includes high voltage detection. DIN rail or 201A-9 190480VAC surface mountable 2020 Littelfuse, Inc. Rev: 1-A-062716Rev: 2-A-061220 wwwwww.littelfuse.com/201a.littelfuse.com/Protection Relays Voltage Monitoring Relays 201A 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 Immunity Functional Characteristics (RFI), Radiated 150MHz, 10 V/m Low Voltage (% of setpoint) Fast Transient Burst IEC 61000-4-4, Level 3, 3.5 kV input power Trip 90 % 1 % & controls Reset 93 % 1 % Surge Voltage Unbalance (NEMA) Immunity IEC IEC 61000-4-5, Level 3, 4 kV line-to-line Trip 6 % Level 4, 4 kV line-to-ground Reset 4.5 % ANSI/IEEE C62.41 Surge and Ring Wave Compliance to Optional High Voltage a level of 6 kV line-to-line (% of setpoint) Hi-potential Test Meets UL508 (2 x rated V + 1000V for 1 min.) Trip 110 % 1 % Safety Marks Reset 107 % 1 % UL (OT08PC octal Trip Delay Time socket required) UL 508 (File E68520) High/Low Voltage Fault 4 seconds Dimensions H 44.45 mm (1.75) W 60.33 mm (2.38) Unbalance & Phasing Faults 2 seconds D (with socket) 104.78 mm (4.13) Restart Delay Time Weight 0.7 lbs. (11.2 oz., 317.51 g) After a Fault 2 seconds Mounting Method DIN rail or surface mount After a Complete Power Loss 2 seconds (plug in to OT08PC socket) Output Characteristics Socket Available Model OT08PC (UL Rating 600 V) Output Contact Rating (SPDT) Pilot Duty 480 VA 240 V ac The 600 V socket can be surface mounted or installed on DIN Rail. General Purpose 10 A 240 V ac Note: Manufacturers recommended screw terminal torque for the OT Series Octal Sockets is General Characteristics 12 in.-lbs. Temperature Range -20 to 70C (-4 to 158F) Must use Model OT08PC socket for UL Rating 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 Transient Protection (Internal) 2500 V for 10 ms 2020 Littelfuse, Inc. Rev: 1-A-062716Rev: 2-A-061220 wwwwww.littelfuse.com/.littelfuse.com/201a