Atlas Copco 1900070123 Power Control Module (24‑250VAC, 16A)

The Atlas Copco 1900070123 is a versatile power control module designed for use in Atlas Copco compressor systems and industrial control applications. This unit provides reliable switching and protection for electrical circuits operating from 24 VAC to 250 VAC, with a maximum current rating of 16 A. It is commonly used as a motor contactor, solenoid driver, or general‑purpose power relay within compressor control panels. Its compact design, robust construction, and wide voltage compatibility make it suitable for both retrofit and original equipment installations.

Functional Overview

The module incorporates a high‑quality electromechanical relay with silver‑alloy contacts, capable of handling resistive and inductive loads. It features a built‑in suppression circuit to reduce electrical noise and protect against voltage spikes. The unit is designed for panel mounting and includes clearly labelled screw terminals for input, output, and control connections. An LED indicator provides visual status of the relay state.

Technical Specifications

• Supply Voltage: 24‑250 VAC (50‑60 Hz) or 24‑250 VDC (depending on coil configuration)

• Contact Rating: 16 A resistive @ 250 VAC

• Contact Configuration: 1 Form A (SPST‑NO) or 1 Form C (changeover)

• Coil Power: 1.5 VA (AC) / 1.0 W (DC)

• Contact Material: Silver‑cadmium oxide

• Mechanical Life: > 10 million operations

• Electrical Life: > 100,000 operations at rated load

• Dielectric Strength: 2500 VAC (coil to contacts)

• Operating Temperature: -20 °C to +60 °C

• Protection: IP20

• Dimensions: 80 x 40 x 60 mm

Installation and Wiring

The module is mounted on a standard DIN‑rail or via screw holes. Wiring connections are made to the terminal blocks using suitable gauge wire (up to 2.5 mm²). The control coil is connected to the appropriate voltage source (AC or DC as specified), and the switching contacts are wired in series with the load. Proper fusing is recommended to protect against short circuits.

Applications

This power control module is used in Atlas Copco compressor panels for starting and stopping motors, controlling solenoid valves for pneumatic systems, activating warning lights or alarms, and switching auxiliary equipment such as fans and pumps. Its wide voltage range makes it suitable for both 120 VAC and 230 VAC systems.

Compatibility

The 1900070123 is compatible with Atlas Copco Elektronikon and other controller panels that provide a control output for relay activation. It can also be used with third‑party controllers in retrofitting projects.

Protection and Safety

An integrated snubber circuit protects the contacts from arcing when switching inductive loads (motors, solenoids). The module is designed with creepage and clearance distances that meet UL and IEC safety standards. It is CE marked and suitable for industrial use.

Maintenance and Lifecycle

No routine maintenance is required, although periodic inspection of contacts is recommended in high‑cycle applications. The relay module is field‑replaceable; it can be unplugged (if socketed) or unbolted for exchange. Spare modules are available through the Atlas Copco service network.

Benefits

This module provides a compact, reliable, and cost‑effective solution for power switching in compressor control systems. Its wide voltage compatibility reduces inventory requirements, and the robust construction ensures long service life.

Conclusion

The Atlas Copco 1900070123 power control module is a trusted component for switching and protection in compressor and industrial control applications, delivering reliable performance across a broad voltage and current range.