Current Switches

Current Switches, CR9321, CR9350CR Magnetics, Inc. has developed the new CR9321 series of Current Switches for applications that require an on/off indication of current flow. Current Switches are specifically designed for low cost, high volume OEM uses of monitoring motor overloads and heater elements. The CR9321 Current Switches are fully isolated to protect delicate monitoring equipment. It is also self-powered requiring no external power supply. The low turn-on point of .350 Amp AC allows the monitoring of very small electrical loads. Current levels above this point will turn the internal NPN or PNP transistor or the solid state AC triac to a full-on status.

 

An electrical current carrying wire is routed through the window opening of the current switch requiring no splices or electrical connections. Positioning is accomplished by use of a plastic tie or looping the wire through the center of the switch.

 

The standard CR9321 Current Switches operates in 50 or 60 Hz systems and is a self powered, non-intrusive device housed in non-corrosive thermoplastic. Overall dimensions are 1.50" x 1.00" x 0.75". The new Current Switches will accept up to one size #8 AWG wire through its center opening of .270 inch dia. Two standard #22 AWG wire leads of 12 inches in length are supplied for connection to instrumentation.

 

Wire Mounted Current Indicator
Wire Mounted Current Indicator
Wire Mounted Current Indicator
Low cost
Low fixed trip point
Fully isolated
Reverse output polarity protected
Self-powered

Frequency: 50 to 400 Hz
Insulation Level: 600 Vac
Rated full-on: 0.350 Aac RMS
Turn-on time: 100 ms max. @ rated full-on
Turn-off time: 250 ms max. to 80% of Vce
On-off current indicator
Direct connection to items
   
   
   
   

 

Current Switches CR9350

Current Switches, CR9321, CR9350CR Magnetics, Inc. has developed the new CR9350 series of Current Switches for applications that require an on/off indication of current flow. Current Switches are specifically designed for low cost, high volume OEM uses of monitoring motor overloads and heater elements.

 

Wire Mounted Current Indicator
Wire Mounted Current Indicator
Wire Mounted Current Indicator
Low cost
Low fixed trip point
Fully isolated
Reverse output polarity protected
Self-powered

Frequency: 50 to 400 Hz
Insulation Level: 600 Vac
Rated full-on: 0.350 Aac RMS
Turn-on time: 100 ms max. @ rated full-on
Turn-off time: 250 ms max. to 80% of Vce
On-off current indicator
Direct connection to items
   
   
   
   

 

CR Magnetics Current Transducer Catalog
CR Magnetics Current Transformer Catalog
CR Magnetics Commercial & Metering Class Current Transformers

 


 


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