Littelfuse 202-200-SP-NHV Voltage/Phase Monitor Product Description

The 202-200-SP voltage monitor is designed to protect single-phase motors regardless of size. It can be used with 190V-240VAC, 50/60Hz motors to prevent damage caused by incoming power problems.

A unique microcontroller-based voltage-sensing circuit constantly monitors the voltage to detect harmful power line conditions. When a harmful condition is detected, the relay’s output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level and a specified amount of time has elapsed (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.

Littelfuse 202-200-SP-NHV Voltage/Phase Monitor Typical Applications

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

Littelfuse 202-200-SP-NHV Voltage/Phase Monitor Features

• Compact, Quick Mounting Design: 1-Screw Mounting Saves Time and Space. Small Footprint Ideal for Assembly into Panels
• Proprietary Microcontroller Based circuitry: Constant Monitoring of Single-Phase, Low Voltage, High Voltage, Voltage Unbalance, Phase Reversal, Harmful Power Line Conditions
• Auto-Sensing Wide Voltage Range (202 & 202-RP): Automatically Senses System Voltage Between 90-480VAC. Saves Setup Time
• Advanced LED Diagnostics: Quick Visual Indicator for Cause of Trip. Led Indications Include: Normal Operation, Restart Delay, Reverse-Phase Trip, Fault
• Adjustable Trip Delay (202): Prevent Nuisance Tripping Due to Rapidly Fluctuating Power Line Conditions
• NON RETURNABLE

Littelfuse 202-200-SP-NHV Voltage/Phase Monitor Specifications

Line Voltage . . . . . . . . . . . . 190 to 240 VAC

Frequency . . . . . . . . . . . . . . . . . . . . . 50*/60Hz

Phase Sequence . . . . . . . . . . . . . . . . . ABC

Low Voltage (% of set point)

• Trip . . . . . . . . . . . . . . . . . . . . . . . . . . 90%
• Reset . . . . . . . . . . . . . . . . . . . . . . . . . 93%

Trip Delay Time

Restart Delay Time

Output Contact Rating

Temperature Range . . . . . -40° to 70°C (-40° to 158°F)

Trip & Reset Accuracy . . . . . ±1%

Repeatability . . . . . ±0.5%

Input to Output Dielectric . . . . . 1480 Vrms (min.)

Termination . . . . . . 0.25” male quick connect

Power Consumption . . . . . . . . . . . . . 5 Watts (Max.)

Transient Protection . . . . . . IEC 61000-4-5, ±4kV

UL Recognized . . . . . . UL508 (File #E68520)

Weight . . . . . . . . . . . . . . . . . . . . . . . . 8 oz.

Mounting Method . . . . . . . . . . . 1/4” socket head cap screw (customer supplied)

*Note: 50Hz will increase all delay timers by 20%. CE Pending

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

Littelfuse 202-200-SP-NHV Voltage/Phase Monitor Resources

Littelfuse 202-200-SP-NHV Product Specifications

Littelfuse 202-200-SP-NHV Installation Bulletin

Littelfuse 202-200-SP-NHV Engineering Specifications