2 of 3

Littelfuse.com/AFD-01

©2025 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 11/12/2025

Circuit Protection & Interrupter Subassemblies

AFD-01 Series

Specifications

Relevant Product Standard

IEC 62606

Minimum Series Arc Fault Detection Level 2.5 A

DC Regulated Supply Voltage

5V ± 1%

Current consumption

< 10 mA

Rated Load Current

Up to 40 A

Fault Signal Output

Pulse (Imax = 5 mA) to trip PMR or SCR

Environmental Operating Conditions

-25 ºC to +85 ºC

Size (Width x Length x Height)

15 mm x 28 mm x 15 mm

Sensor Board Weight

< 6 g

Dimensions (Millimeters)

Handling Instructions

Care should be taken to ensure the correct connection of the AFD-01. Miswiring the product may cause permanent damage.

ESD Caution

PCBA contains ESD (electrostatic discharge) sensitive devices. Damage may occur on devices subjected to high-energy

ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality

Wiring Diagram

AFD-01 SYSTEM CONNECTION

PIN NO.

NAME

DESCRIPTION

5

+5 V DC Regulated Power Supply

4

GND

Ground

3

OUT

Trip Output Voltage

2

LED

“Fault” LED Output

1

Vin/Test Mains Input (via divider) / Test Buttom