Littelfuse 601-CS-D-P1 Power Monitor Description

The 601-CS-D-P1 3-phase power monitor is a fully programmable electronic power monitor designed to monitor 3-phase systems. The 601-CS-D-P1 has a single relay that can be configured as a general-purpose network output or to trip on ground faults. The 601-CS-D-P1 monitors ground fault current, phase currents, phase voltages, power factor and frequency. The RS485MS-2W communications module allows the 601-CS-D-P1 to communicate using the Modbus RTU protocol. The Modbus connection can be used to monitor power parameters, setup the device or control the fault relay. A DeviceNet™ communications I/O module (CIO-601CS-DN-P1) is available as well. This CIO module only works with the 601-CS-D-P1 unit. It is used for sending the information from the 601-CS-D-P1 over a DeviceNet™ network. It also provides I/O capabilities and the ability to set the parameters of the 601-CS-D-P1.

**Note: This product must be used with a Zero Sequence CT for proper operation (not included).

Littelfuse 601-CS-D-P1 Power Monitor Features

• Built-In Display
• 15 Programmable Parameters to Control the Device Operation
• 2 Programmable Trip Delay Timers
• Network Communications Capability

Littelfuse 601-CS-D-P1 Power Monitor Specifications

Line Voltage . . . . . . . . . . . . 200-480 VAC

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

Motor Full Load Amp Range . . . . . . . . . . . . 0.5-175A (direct) 176-800A (CTs required)

Input Ground Fault Current . . . . . . . . . . . . 0.5-10A

Output Contact Rating (SPDT)

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

Ambient Temperature Range

• Operating . . . . . . . . . . .-20° to 70°C (-4° to 158°F)
• Storage . . . . . . . . . . . . . . .-40° to 80°C (-40° to 176°F)

Accuracy at 25° C (77° F)

• Voltage . . . . . . . . . . . . . . . -+/-1%
• Current . . . . . . . . . . . . . . .+/-3% (<175A direct)
• GF Current . . . . . . . . . . . . . . +/-3%

Repeatability

• Voltage . . . . . . . . . . . . . . . +/-0.5% of nominal voltage
• Current . . . . . . . . . . . . . . .+/-1% (<175A direct)

Maximum Input Power . . . . . . . . . . . . 10 W

Pollution Degree . . . . . . . . . . . . 3

Class of Protection . . . . . . . . . . . . IP20

Relative Humidity. . . . . . . . . . . . . . . 10-95%, non-condensing per IEC 68-2-3

Terminal Torque . . . . . . . . . . . . . . . . . . . . . 7in.-lbs.

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

Radio Frequency Immunity

Surge

Safety Marks

Max Conductor Size (with insulation) . . . . . . . . . . . . . . . . . . . . . 0.65”

Weight . . . . . . . . . . . . . . . . . . . . . . . . 19.2 oz.

Mounting Method . . . . . . . . . . . Surface mount (4 - #8 screws) or DIN rail mount

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

Littelfuse 601-CS-D-P1 Power Monitor Resources

Littelfuse 601-CS-D-P1 Product Specifications

Littelfuse 601-CS-D-P1 Product Installation Bulletins