Skip to main content
Home / Computer Hardware, Monitors & Peripherals / 5A Overcurrent Protection Sensor Module AC Current Detection Signal Output 5V 12V 24V Relay

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Input Voltage 5V / 12V / 24V DC
Detection Type AC Current Only
Current Range 0.1A to 5A
Output Signal TTL Level / Relay Drive
Response Time Less than 1 Second
Operating Temperature -20°C to 70°C
PCB Dimensions 45mm x 25mm x 15mm
Mounting Type Screw Hole Mounting
Status Indicator Red/Green LED
Isolation Optocoupler Isolated

5 reviews

A

Anonymous

Apr 15, 2026

Rating: 5/5

Fast shipping and well packed

Module arrived quickly and was protected well against static. Integrated it into a custom HVAC controller. No issues so far after two weeks of continuous operation.

A

Anonymous

Mar 31, 2026

Rating: 5/5

Works great for pump protection

Used this module to protect a water pump from drawing too much current. It trips reliably when the load exceeds the set threshold. Easy to wire into my control box.

A

Anonymous

Mar 13, 2026

Rating: 5/5

Reliable protection

Tested the trip point with a variable load and it was accurate. The LED indicator is bright enough to see status from a distance. Happy with this purchase.

A

Anonymous

Feb 28, 2026

Rating: 4/5

Solid build quality

The PCB looks clean and soldering is good. It does get slightly warm under continuous load near the max rating, so ensure some airflow in your enclosure.

A

Anonymous

Feb 13, 2026

Rating: 4/5

Good value but instructions vague

The hardware quality is solid and it functions as advertised. However, the wiring diagram included was a bit small. Had to look up similar modules online to confirm connections.

5 FAQ

Q: Does this sensor work with DC current loads?

A: No, this module is designed specifically for AC current detection. Using it with DC loads will not provide accurate readings or protection.

Q: Is the current trip threshold adjustable?

A: Yes, there is a potentiometer on the board that allows you to calibrate the overcurrent trip point within the 0.1A to 5A range.

Q: Is there electrical isolation between the sensor and control side?

A: Yes, the module features optocoupler isolation to protect your low-voltage control circuitry from the high-voltage AC side.

Q: Can I use a 24V power supply for this module?

A: Yes, the module supports 5V, 12V, and 24V DC input voltages. Please ensure you select the correct jumper setting if applicable.

Q: What is the maximum load the onboard relay can handle?

A: This module provides a signal output to drive an external relay. The maximum load depends on the external relay you connect, not this sensor module itself.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
Transparent Retainer Case Aligner Storage Box Portable Carry-On Squeeze Bag Orthodontic Appliance Rubber Band Cleaning Box

Transparent Retainer Case Aligner Storage Box Portable Carry-On Squeeze Bag Orthodontic Appliance Rubber Band Cleaning Box

$18.50

Transparent Data Cable Organizer Bag for Travel - Portable Multi-Use Visible Storage for Digital Chargers and Cable Management

Transparent Data Cable Organizer Bag for Travel - Portable Multi-Use Visible Storage for Digital Chargers and Cable Management

$7.36

Finished Seal Calligraphy Finished Stone Stamp Sellos Chines

Finished Seal Calligraphy Finished Stone Stamp Sellos Chines

$108.58

Chunfei Grocery Store Commuter Hard Fork Low-Beam Mountain Bike for Urban Roads, Suburbs, School, and Outings

Chunfei Grocery Store Commuter Hard Fork Low-Beam Mountain Bike for Urban Roads, Suburbs, School, and Outings

$2,247.00

6-Cavity Large Square French Flower DIY Soap Silicone Mold for Essential Oil and Milk Soap

6-Cavity Large Square French Flower DIY Soap Silicone Mold for Essential Oil and Milk Soap

$4.93

Home Balcony Vegetable Planter - Self-Watering Plastic Pot for Strawberries and Succulents

Home Balcony Vegetable Planter - Self-Watering Plastic Pot for Strawberries and Succulents

$28.00

Pressure Swing Adsorption Nitrogen Generator - High-Purity Nitrogen Device for Heat Treatment

Pressure Swing Adsorption Nitrogen Generator - High-Purity Nitrogen Device for Heat Treatment

$36,456.00

6-Cavity 3D Rose Silicone Mold for DIY Soap Making Heat-Resistant Non-Stick Large Size for Milk Soap and Essential Oil Soap

6-Cavity 3D Rose Silicone Mold for DIY Soap Making Heat-Resistant Non-Stick Large Size for Milk Soap and Essential Oil Soap

$5.80

Traditional Handmade Baby Teething Rattle Sheepskin Wooden Clapper Newborn Toy Intangible Cultural Heritage

Traditional Handmade Baby Teething Rattle Sheepskin Wooden Clapper Newborn Toy Intangible Cultural Heritage

$29.85

Manufacturer Supply ZSJC02 Film Splicing Table, Alignment Table, Film Inspection Table

Manufacturer Supply ZSJC02 Film Splicing Table, Alignment Table, Film Inspection Table

$4,484.00

Box-Type Oxygen Generator Export Equipment - Stable Nitrogen and Oxygen Production for Wastewater Treatment

Box-Type Oxygen Generator Export Equipment - Stable Nitrogen and Oxygen Production for Wastewater Treatment

$25,000.00

Wholesale Acrylic Paint Stick Set, 3ml x 12 Colors, Non-Toxic for Children's DIY and Street Art

Wholesale Acrylic Paint Stick Set, 3ml x 12 Colors, Non-Toxic for Children's DIY and Street Art

$2.01

Cheese Processing Equipment - Small Pasteurized Fresh Milk Production Line, Fully Automatic Cheese Making Machine

Cheese Processing Equipment - Small Pasteurized Fresh Milk Production Line, Fully Automatic Cheese Making Machine

$66,500.00

Household Mini Range Hood, Portable USB Desktop Smoke Extractor for Living Room Hot Pot & BBQ Odor Removal

Household Mini Range Hood, Portable USB Desktop Smoke Extractor for Living Room Hot Pot & BBQ Odor Removal

$41.00

Sanitary Grade Stainless Steel Low-Temperature Vacuum Single-Effect Falling Film Evaporator for Milk Powder and Juice Processing

Sanitary Grade Stainless Steel Low-Temperature Vacuum Single-Effect Falling Film Evaporator for Milk Powder and Juice Processing

$4,158.00

Chain Shortener & Lifting Rigging - Double Chain Hook Assembly for Overhead Cranes and Hoists

Chain Shortener & Lifting Rigging - Double Chain Hook Assembly for Overhead Cranes and Hoists

$130.00

Youlian Toast Shaping Machine Dough Molder Square Bread Shaper Bakery Equipment YSN-T380

Youlian Toast Shaping Machine Dough Molder Square Bread Shaper Bakery Equipment YSN-T380

$9,695.20

Michelin Tire 255/50R20 109V - Compatible with VW Teramont, Trumpchi GS8, AITO M7, Li Auto L7/L8/L9, and NIO ES6

Michelin Tire 255/50R20 109V - Compatible with VW Teramont, Trumpchi GS8, AITO M7, Li Auto L7/L8/L9, and NIO ES6

$550.00

Traditional Wooden Rattle with Sheepskin Head for Early Education Newborns Boys and Girls Visual Tracking Grip and Hearing Training

Traditional Wooden Rattle with Sheepskin Head for Early Education Newborns Boys and Girls Visual Tracking Grip and Hearing Training

$11.88

French Canson Classic Printmaking Paper 100% Cotton 320g for Screen Printing, Woodcut, Copperplate, Lithography; 250g Cotton Pulp 60*76cm Half Sheet 8K Quarter Sheet A4 Printmaking Painting Tool Set Ink Roll Rubbing Paper

French Canson Classic Printmaking Paper 100% Cotton 320g for Screen Printing, Woodcut, Copperplate, Lithography; 250g Cotton Pulp 60*76cm Half Sheet 8K Quarter Sheet A4 Printmaking Painting Tool Set Ink Roll Rubbing Paper

$7.65

Fan Start Capacitor 8uF for ABB ACS800 VFD

Fan Start Capacitor 8uF for ABB ACS800 VFD

$350.00

babycare Baby Rattle with Teether for Newborns, Silicone Shaker Bell Educational Toy for Infants and Toddlers

babycare Baby Rattle with Teether for Newborns, Silicone Shaker Bell Educational Toy for Infants and Toddlers

$39.90

Class 100 Clean Workbench and Laminar Flow Hood, Negative Pressure Weighing Booth, Direct from Manufacturer

Class 100 Clean Workbench and Laminar Flow Hood, Negative Pressure Weighing Booth, Direct from Manufacturer

$2,475.00

1.9m 4-Printhead Digital Sublimation Printer for Diatom Mud, Polyester Fabric, and Garment Heat Transfer Printing

1.9m 4-Printhead Digital Sublimation Printer for Diatom Mud, Polyester Fabric, and Garment Heat Transfer Printing

$600.00

ergo5950 Acrylic Specialty Adhesive - High-Strength Bond for Acrylic Sheets, PMMA, Glass, Fish Tanks, PLA, and PC Boards

ergo5950 Acrylic Specialty Adhesive - High-Strength Bond for Acrylic Sheets, PMMA, Glass, Fish Tanks, PLA, and PC Boards

$57.84

Invisalign Orthodontic Retainer Storage Box - Compact Portable Cleaning Case for Teeth Aligners and Dentures

Invisalign Orthodontic Retainer Storage Box - Compact Portable Cleaning Case for Teeth Aligners and Dentures

$12.30

[Camizong] Lilith's Claw – Gothic-Style Fork Acrylic Check-In Stick for Badge Display with Magnetic Backing

[Camizong] Lilith's Claw – Gothic-Style Fork Acrylic Check-In Stick for Badge Display with Magnetic Backing

$11.70

PELICAN 1010 Outdoor Waterproof Micro Case for Earphones and Cable Storage

PELICAN 1010 Outdoor Waterproof Micro Case for Earphones and Cable Storage

$25.00

Korea Hwahong Model 345 Detail Liner Brush for Painting - Recommended by Xijiu 011

Korea Hwahong Model 345 Detail Liner Brush for Painting - Recommended by Xijiu 011

$12.52

Stainless Steel Oil Painting Medium Dispenser and Brush Washer Cup for Students, Diluent and Watercolor Paint Supplies

Stainless Steel Oil Painting Medium Dispenser and Brush Washer Cup for Students, Diluent and Watercolor Paint Supplies

$3.80