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This sensor module uses a current transformer to inductively collect AC current signals, and it's built specifically to provide an automatic relay-based overcurrent protection function within a 0 to 5A range. When the current running through the monitored circuit exceeds the configured threshold, the module engages its relay output, and once the current returns to a normal level, the relay disengages automatically, without needing a manual reset.
That relay output, exposed through COM, NC and NO terminals, lets the module control an external circuit directly, whether that's cutting power to a protected device, triggering an alarm, or signalling another part of a larger control system that an overcurrent condition has occurred.
The detection resolution can be changed by adjusting the module's resistance parameters, and the over-current signal's critical trigger point is itself adjustable, giving some flexibility in exactly where the protection threshold sits for a specific application. Operating voltage for the module's own control circuitry is DC12V, with an operating current under 20mA, and it accepts an AC frequency range of 20Hz to 400Hz, covering standard mains frequencies and a fair amount beyond that.
Detection range is AC 0.3A to 5A, and the module accommodates a maximum wire diameter of 5.2mm passing through its current transformer. Mounting holes are 3mm in diameter, spaced 52.5mm apart, and the module operates across a wide -40C to 85C temperature range, with dimensions of 38mm by 44mm by 12mm and a weight of 22g.
Anyone building a protective cutoff for a small motor, appliance or circuit that needs to detect and respond to an overcurrent condition automatically, without a fuse that needs manual replacement, will find this module's adjustable threshold and self-resetting relay a practical protection solution.
Through a current transformer, which detects AC current inductively.
AC 0.3A to 5A.
Yes, it disengages automatically once current returns to normal.
DC12V.
Yes, the overcurrent setpoint and detection resolution can both be adjusted.
| Brand | Generic |
|---|---|
| Operating Voltage | DC12V |
| Selling unit | PCS |
