GE A03B-0819-C104 | DC Input Module

The GE A03B-0819-C104 provides reliable DC signal acquisition for industrial CNC systems. This input module features 16 discrete input channels for connecting field sensors and switches. It accepts 24 V DC sinking (NPN) inputs from limit switches and push buttons. Weighing only 0.28 kg, the GE A03B-0819-C104 fits into standard CNC I/O base units. Its dimensions measure 140 mm x 80 mm x 35 mm.

Input Specifications and Channel Features

The GE accepts 24 V DC positive logic signals from field devices. Each input channel draws 7 mA at nominal voltage for reliable signal detection. The module filters electrical noise with a fixed 3 ms input delay. Moreover, the GE A03B-0819-C104 includes LED indicators for each channel to show active status. Consequently, you can troubleshoot field wiring quickly without a programming terminal.

Energy Storage and Internal Components

The GE A03B-0819-C104 contains no internal battery for complete maintenance-free operation. It stores no energy locally except for small decoupling capacitors. This module draws 80 mA from the 5 V DC backplane power supply. Additionally, it consumes 60 mA from the external 24 V DC field power supply. The GE A03B-0819-C104 includes 16 optocouplers for electrical isolation between backplane and field. Therefore, it protects your CNC controller from electrical noise and voltage spikes.

Technical Specifications Table

Below are the complete technical parameters for engineers and procurement teams:

Parameter	Specification
Full Product Name	GE A03B-0819-C104
Product Category	CNC DC Input Module
Number of Input Channels	16
Input Type	Positive logic (sinking/NPN compatible)
Rated Input Voltage	24 V DC (19.2 V to 28.8 V DC)
Input Current per Channel	7 mA at 24 V DC
Input Impedance	3.4 kΩ typical
Input ON Voltage	≥ 15 V DC
Input OFF Voltage	≤ 5 V DC
Input Filter Time	3 ms (fixed)
Input Response Time	< 5 ms
Channel Grouping	2 groups of 8 inputs
Isolation Type	Optocoupler (1,500 V AC)
Number of Optocouplers	16
Current Consumption (5V DC)	80 mA from backplane
Current Consumption (24V DC)	60 mA external field supply
Power Dissipation	0.9 W maximum
Energy Storage	No battery (decoupling capacitors only)
Number of Components	1 main PCB + 16 optocouplers + 1 connector + metal housing
Net Weight	0.28 kg (280 grams)
Gross Weight (packaged)	390 grams
Dimensions (W x H x D)	140 mm x 80 mm x 35 mm
Connector Type	32-pin female (DIN 41612)
Wire Size (External)	AWG 24 to AWG 14 (via terminal block on base)
LED Indicators	16 (green, one per channel) + power LED
Operating Temperature	0°C to +50°C
Storage Temperature	-20°C to +70°C
Humidity Tolerance	10% to 90% non-condensing
Certifications	CE, UL

Installation and Application Details

The GE A03B-0819-C104 inserts directly into any standard CNC I/O base unit slot. Align the module with the guide rails and press firmly until the connector seats. The base unit provides the terminal connections for all field wiring. The GE A03B-0819-C104 requires no configuration switches or jumpers for operation. Connect 24 V DC field devices to the corresponding terminals on the base unit. This input module suits limit switches, push buttons, proximity sensors, and photo-electric sensors. It works perfectly for CNC machine tools, including milling machines, lathes, and machining centers. Thus, the GE A03B-0819-C104 delivers reliable digital input for precision industrial automation applications.