---
product_id: 205139143
title: "CrocSee Miniature Current Switch, CS-TS0, Normally Open Amp Sensor Relay, AC 1-50A Detectable"
brand: "crocsee"
price: "481 DH"
currency: MAD
in_stock: true
url: https://www.desertcart.ma/products/205139143-crocsee-miniature-current-switch-cs-ts0-normally-open-amp-sensor
store_origin: MA
region: Morocco
---

# 1-50A sensing range Self-powered, no external supply ≤200ms ultra-fast response CrocSee Miniature Current Switch, CS-TS0, Normally Open Amp Sensor Relay, AC 1-50A Detectable

**Brand:** crocsee
**Price:** 481 DH
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay ahead with lightning-fast current sensing!

## Quick Answers

- **What is this?** CrocSee Miniature Current Switch, CS-TS0, Normally Open Amp Sensor Relay, AC 1-50A Detectable by crocsee
- **How much does it cost?** 481 DH with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/205139143-crocsee-miniature-current-switch-cs-ts0-normally-open-amp-sensor)

## Best For

- crocsee enthusiasts

## Why This Product

- Trusted crocsee brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Durable:** Lightweight copper construction with surface mount design for easy integration in tight spaces.
- • **Plug-and-Play Power:** Self-powered design eliminates the need for external power, simplifying installation and reducing clutter.
- • **Instantaneous Switching:** Closes contacts within 200 milliseconds to ensure rapid response and minimal downtime.
- • **Precision Amp Detection:** Accurately monitors current from 1 to 50 amps with 1% precision for reliable system control.
- • **Universal Compatibility:** Supports 2.5A @ 120/240 VAC with normally open outputs, fitting seamlessly into diverse electrical setups.

## Overview

The CrocSee Miniature Current Switch CS-TS0 is a compact, self-powered amp sensor relay designed for precise current monitoring from 1 to 50 amps. Featuring a rapid ≤200ms response time and universal normally open outputs rated at 2.5A for 120/240 VAC circuits, it offers dependable, plug-and-play operation ideal for professional electrical applications.

## Description

CrocSee Miniature Current Switch, CS-TS0, Normally Open Amp Sensor Relay, AC 1-50A Detectable

## Features

- N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
- Self-powered, no external power supply required
- Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
- Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
- NOTE: If you want to test the operation of the sensor switch, a load must be applied across the NO contacts; otherwise, it will not work.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Part Number | 4A420 |
| Item Weight | 3.52 ounces |
| Package Dimensions | 3.58 x 2.6 x 1.65 inches |
| Item model number | 4A420 |
| Material | copper |
| Item Package Quantity | 1 |
| Mounting Type | Surface Mount |
| Switch Style | Flow Switch, Temperature Switch |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![CrocSee Miniature Current Switch, CS-TS0, Normally Open Amp Sensor Relay, AC 1-50A Detectable - Image 1](https://m.media-amazon.com/images/I/61uAA2xxsdL.jpg)

## Questions & Answers

**Q: Would this be able to control the secondary load at 1A @240vac or is that too much for the unit?**
A: Yes, this current switch is able to control the secondary load at 1A @240vac. In 240V circuit, only one 120V hot line is connected.
Also, if the current being meaured is less than 1A, loop the wire through the sensor coil to incease the current field. 
Cross-core current = actual current X number of loops around sensor coil
e.g. If the current draw from the measured device is 0.5 amp, then loop the wire around the sensor coil 3 times and it will produce 1.5A current.

**Q: I’m an electrician and installed this at my home.  Installed at prescribed and my fan turns off and on intermittently as drying is on. Faulty?**
A: I believe that your current sensor is working properly. What I suspect may be happening is that your dryer heating elements are turning on and off to maintain a regulated dryer temperature. When power to the elements is temporarily turned off, only the dryer motor is drawing current which is likely less than 1 amp, the minimum current needed to activate the current sensor output. That's when your inline motor is turning off and turns back on when the heating elements are turned on again. The solution is to coil several turns of wire around the current sensor, passing each turn through the hole in the sensor. This will increase the sensing current by the number of amp-turns of wire you are exposing to the sensor. This should increase the current that the sensor senses to more than 1 amp (1/6  HP motor would draw 500ma at 240 vac so 3 turns of wire x 500ma/turn should easily exceed 1 amp of sensed current at all times).

**Q: What kind of contactor or high current relay is needed If my load is over 2.5A (shopvac 12A ) ?**
A: You can buy a 20A~25A relay for it.

**Q: my  switch has bleed thru of 1.7 v ac when switch is open, is this normal?**
A: Minor bleed through is expected since the switch is not a mechanical open circuit, but a high impedance electronic device.

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*Product available on Desertcart Morocco*
*Store origin: MA*
*Last updated: 2026-02-02*