CR Magnetics offers a complete line of products to monitor any group or individual power-using equipment.
From multi-function digital communication transducers to simple current transformers, our products enable the designer to choose the exact component that provides the maximum benefit to the system.
C R Magnetics Inc is a BBB Accredited Business. Click for the BBB Business Review of this Electric Instruments in Saint Louis MO

CR Magnetics, Inc. has developed the CR9321 series of current switches for applications that require an on/off indication of current flow. The new product is specifically designed for low cost, high volume OEM uses of monitoring motor overloads and heater elements.

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  • On-off current indicator
  • Direct connection to items


  • 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

AC Switching

  • Off state voltage: 240 Vac RMS Max.
  • Minimum Holding Current: 10 mA
  • On State Current: 0.8 AAC RMS max. continuous
  • Off State Leakage: 50 ua @240 Vac
  • Peak Non-Repetitive Surge Current: 8 AAC RMS (1 cycle, 60 Hz.)
Item #: CR9321
Our Price: $21.45
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Other packages and ranges may be available.
Please contact factory for more information.