1 1

Littelfuse 201A Three-Phase Voltage Monitor

Littelfuse 201A Three-Phase Voltage Monitor

Usually ships within 1 week

SKU : MSR201A

In Stock Quantity:0

:
Brand : Littelfuse/Symcom
$163.56 USD
Shipping calculated at checkout.

Description

Littelfuse 201A Voltage Monitor Product 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 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.

Littelfuse 201A Voltage Monitor Typical Applications

  • Fans
  • Compressors
  • Air Conditioners
  • Heat Pumps
  • Well Pumps
  • Sump Pumps
  • Small Conveyor Motors

Littelfuse 201A Voltage Monitor Features

  • Protects 3-phase Motors From:
    • Low Voltage
    • Single-Phase
    • Reverse-Phase
    • Voltage Unbalance
  • Diagnostic LED
  • Optional High Voltage Protection
  • UL Listed
  • CE Compliant
  • 8-pin Plug In; DIN Rail or Surface Mount
  • Convenient for Areas With Limited Space
  • 5-year Warranty
  • Made in the USA

Specifications

Littlefuse 201A Voltage Monitor Specifications

3-Phase Line Voltage . . . . . . . . . . . . 190-480 VAC

Frequency . . . . . . . . . . . . . . . . . . . . . 50 or 60 Hz

Low Voltage (% of set point)

  • Trip . . . . . . . . . . . . . . . . . . . . . . . . . . 90% ±1%
  • Reset . . . . . . . . . . . . . . . . . . . . . . . . .93% ±1%

Voltage Unbalance (NEMA)

  • Trip . . . . . . . . . . . . . . . . . . . . . . . . . .6%
  • Reset . . . . . . . . . . . . . . . . . . . . . . . . 4.5%

Optional High Voltage (% of set point)

  • 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 Contact Rating (SPDT)

  • Pilot Duty. . . . . . . . . . . . . . . . . . . . . . . . 480 VA @ 240 VAC
  • General Purpose. . . . . . . . . . . . . . . . . . . . . . .  10A @240 VAC

Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . -20° to 70°C (-4° to 158°F)

Trip & Reset Accuracy . . . . . . . . . . . . . ±1%

Maximum Input Power . . . . . . . . . . . . . 5 Watts

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

. . . . . . . . . . . . . 2500V for 10 ms

Electrostatic Discharge(ESD) . . . . . . IEC 61000-4-2, Level 3, 6kV Contact, 8kV Air

Radio Frequency

  • Radiated . . . . . . . . . . . .150MHz, 10V/m
  • Fast Transient Burst . . . . . . . . . . . IEC 61000-4-4, Level 3, 3.5kV Input Power and Controls

Surge

  • 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

Weight . . . . . . . . . . . . . . . . . . . . . . . . 11.2 oz.

Mounting Method . . . . . . . . . . . DIN Rail or Surface Mount (plug in to OT08PC socket)

Socket Available . . . . . . . . . . . Model OT08PC (UL Rated 600V)

The 600V socket can be surface mounted or installed on DIN Rail.

Must use Model OT08PC socket for UL Rating!

*Note: Manufacturer’s recommended screw terminal torque for the OT Series Octal Sockets is 12 in.-lbs.


WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Resources

Littelfuse 201A Voltage Monitor Resources

product-resourcesb.png

Littelfuse 201A Product Specifications

SymCom 201A Installation Bulletin

SymCom 201A Engineering Specifications

Warranty
Loading...
View full details

PUMPS, WATER & WASTE WATER TREATMENT AND A WHOLE LOT MORE

Dedicated to deliver the highest quality products, and services in the water and wastewater industry, and with the help of our well-trained staff, provide a lasting value to each customer we support... read more

HELPING CUSTOMERS SINCE 1953

As time-tested specialists in water and waste water pumping systems, we are your best choice for pumps and related equipment.

  • Wastewater Treatment Systems
  • Sump Pump Systems
  • UV Water Purification & Treatment
  • Irrigation Pump Systems
  • Storm Water Lift Stations
  • Water Well Pump Systems

OUR CUSTOMERS REVIEWS