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AC current switches offer fixed or adjustable trip points, sensing ranges up to 400 Amps, fixed- or split-core mounting styles, and a variety of features such as a digital setpoint display, solid-state outputs, or field-adjustable time delayed outputs to minimize nuisance trips.
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AC Current Switches
Category Selection
AC current switches combine a current transformer, signal conditioner, and limit alarm into a single package for monitoring AC applications. They use fixed or adjustable setpoints to provide discrete outputs based on the input current level and offer the following advantages:
- Easily detect jams and overloads on conveyors
- More reliable than electromechanical pressure or flow switches
- Faster response times than temperature sensors
For part listings and specifications, go to Shop Now
Fixed Range AC Current Switches
ACSN series fixed range current switches provide simple current flow status indication with no setup required.
- Models with 100A or 250A input sensing ranges
- Non-adjustable trip point, value dependent on model
- N.O. solid-state switch for control circuits up to 240 VAC/VDC
- Self-powered operation saves installation time and operating costs
- Fixed-core or split-core models
- Made in the USA
Starting at
$42.00
(ACSN100-AE-F)
Single-Range AC Current Switches
ACS150 series AC current switches offer an adjustable trip point, universal solid-state outputs, and accurate indication of overcurrent conditions across a broad range of applications.
- Up to 150A sensing range
- Field-adjustable trip point range from 1 to 150 amps, with 4- or 15-turn potentiometer, depending on model
- N.O. or N.C. solid state output
- Self-powered operation cuts installation time and operating costs
- Status LED provides visual indication of setpoint trip and contact action
- Fixed-core or split-core models
- Made in the USA
Starting at
$86.00
(ACS150-AE-F)
Multi-Range AC Current Switches
ACS200 series solid-state current switches operate when the current level through the sensing aperture exceeds the adjustable setpoint. Internal circuits are powered by induction from the line being monitored.
- Choice of three jumper-selectable input ranges up to 250A
- N.O. or N.C. universal outputs: 1A @ 240VAC or 0.15A @ 30VDC
- Field-adjustable setpoints with 4- or 15-turn potentiometer, depending on model
- Fixed-core or split-core models
- Self-powered operation cuts installation time and operating costs
- Status LED provides visual indication of setpoint trip and contact action
- UL, cUL, CE approvals
- Made in the USA
Starting at
$93.00
(ACS200-AA-F)
AC Current Switches with Two Trip Points
ACS035/ACS400 series current switches feature two separate, field-adjustable setpoints for overcurrent and undercurrent monitoring in a single device. With SPDT relay outputs, the sensors provide a control output and a status output for remote monitoring systems.
- Up to 400A input measuring range
- Two independent SPDT relay outputs
- Two 3/4-turn potentiometers for independent setpoint adjustments
- Simple potentiometer adjustment: point the arrow at the current value
- 24 VAC/VDC operating voltage
- Fixed core case
- Sensing window provides ample space for bus bar, single or multiple conductors
- Made in the USA
Starting at
$237.00
(ACS035-2C-24-F)
AC Current Switches with LED Display
ACS050/ACS200 series current switches feature easy and precise setpoint adjustment via a single-turn potentiometer and a three-digit LED display.
- Up to 200A input measuring range
- Solid-state switch output, normally open, 1A @ 240VAC maximum
- Single-turn potentiometer adjustment with setpoint displayed on sensor
- 24 VAC/VDC operating voltage
- Fixed core case
- Made in the USA
Starting at
$124.00
(ACS050-AA-24-FD)
Single-Range AC Current Switches with Fixed Time Delay
ACSL series self-powered, single-range current switches feature easy setpoint adjustment via a 3/4-turn potentiometer and an integrated time delay function.
- 0 to 150 A input measuring range
- Two-second delay allows the output to ignore motor inrush current
- Status LED provides visual indication of setpoint trip and contact action
- Output is magnetically isolated from the input for safety
- Fixed-core or split-core model types
- Made in the USA
Starting at
$94.00
(ACSL010-AE-F)
Multi-Range AC Current Switches with Adjustable Time Delay
ACSX series high-performance current switches include an adjustable 0-15 second start-up delay timer to eliminate nuisance alarms due to inrush or temporary over-current conditions.
- Up to 200A input measuring range
- Jumper-selectable current input ranges
- N.O. or N.C. AC/DC outputs with contact ratings up to 1.0A @ 240VAC on select models
- Time delay feature eliminates need for a time delay relay
- 15-turn potentiometer setpoint adjustment on fixed-core models
- 4-turn potentiometer setpoint adjustment on split-core models
- Self-powered operation cuts installation time and operating costs
- Status LED provides visual indication of setpoint trip and contact action
- UL, cUL, CE approvals
- Made in the USA
Starting at
$109.00
(ACSX200-AE-F)
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