CR Magnetics CR9321 Current Switch – 350mA Setpoint, 6.8mm Bore

Description

Solid-state current switch that detects when AC current flows through a conductor. Acts as a go/no-go indicator – confirming whether a motor is running, a pump is operating, or a fan is drawing current. The conductor simply passes through the 6.8mm bore (suited to smaller cables up to approximately 6.8mm diameter). Fixed 350mA setpoint with supply range of 24–240VAC/DC.

Output types explained:
– SCR (CR9321-ACA): Switches AC loads up to 0.8A @ 250VAC – use for driving relays, contactors, or indicator lamps directly.
– NPN (CR9321-NPN): 120mA sinking transistor output – connect to PLC digital inputs configured for sinking (NPN) signals.
– PNP (CR9321-PNP): 120mA sourcing transistor output – connect to PLC digital inputs configured for sourcing (PNP) signals.

Available variants:
– CR9321-ACA: SCR output (0.8A @ 250VAC) – for switching AC loads such as relays and contactors
– CR9321-NPN: NPN transistor output (120mA) – sinking signal for PLC digital inputs
– CR9321-PNP: PNP transistor output (120mA) – sourcing signal for PLC digital inputs

Related products:
– For larger cables or busbars, see the CR9350 Current Switch (15.5mm bore, 350mA setpoint).