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© 2016 Littelfuse Protection Relays & Controls Protection Relays Voltage Monitoring Relays www.littelfuse.com/201a Rev: 1-A-062116
Description
The 201A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200V and 400V 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 201A ’s 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 Proprietary microcontroller based circuitry Constant monitoring of single-phase, low voltage, voltage unbalance, phase reversal, harmful power line conditions. High voltage monitoring optional. Compact design for 8-pin; DIN rail or surface mount Allows flexiblility in panel installation Auto-sensing wide voltage range Automatically senses system voltage between 190 - 480VAC. Saves setup time. Advanced LED diagnostics Quick visual indicator for cause of trip. LED indications include: normal operation, power-up restart delay, reverse-phase trip, unbalance/ single-phase trip, high/low voltage trip Accessories OT08PC Octal 8-pin Socket 8-pin 35mm DIN rail or surface mount. Rated at 10A @ 600VAC. Surface mounted with two #6 screws or snaps onto a 35 mm DIN rail. 3-Phase Voltage/Phase Monitor 201A SERIES Wiring Diagram 201A WITH MOTOR CONTROL 201A WITH ALARM CONTROL
Ordering Information
MODEL LINE VOLTAGE DESCRIPTION 201A 190-480VAC DIN rail or surface mountable 201A-9 190-480VAC Includes high voltage detection. DIN rail or surface mountable
© 2016 Littelfuse Protection Relays & Controls Protection Relays Voltage Monitoring Relays www.littelfuse.com/201a Rev: 1-A-062116 Specifications Frequency 50/60Hz Functional Characteristics Low Voltage (% of setpoint) Trip 90% ±1% Reset 93% ±1% Voltage Unbalance (NEMA) Trip 6% Reset 4.5% Optional High Voltage (% of setpoint) Trip 110% ±1% Reset 107% ±1% Trip Delay Time High/Low Voltage Fault 4 seconds Unbalance & Phasing Faults 2 seconds Restart Delay Time After a Fault 2 seconds After a Complete Power Loss 2 seconds Output Characteristics Output Contact Rating (SPDT) Pilot Duty 480VA @ 240VAC General Purpose 10A @ 240VAC General Characteristics Temperature Range -20° to 70°C (-4° to 158°F) Trip & Reset Accuracy ±1% Maximum Input Power 5 W Relative Humidity 10-95%, 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) 2500V for 10 ms 201A SERIES Standards Passed Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air Radio Frequency Immunity (RFI), Radiated 150MHz, 10V/m Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power & controls Surge Immunity IEC IEC 61000-4-5, Level 3, 4kV line-to-line; Level 4, 4kV line-to-ground ANSI/IEEE C62.41 Surge and Ring Wave Compliance to a level of 6kV line-to-line Hi-potential Test Meets UL508 (2 x rated V + 1000V for 1 min.) Safety Marks UL (OT08PC octal socket required) UL508 (File #E68520) CE IEC 60947-6-2 Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”); D (with socket) 104.78 mm (4.13”) Mounting Method DIN rail or surface mount (plug in to OT08PC socket) Socket Available Model OT08PC (UL Rating 600V) The 600V socket can be surface mounted or installed on DIN Rail. Note: Manufacturer’s recommended screw terminal torque for the OT Series Octal Sockets is 12 in.-lbs. Must use Model OT08PC socket for UL Rating!