ABB AUXILIARY CONTACT NC OA3G01

Why Choose the ABB OA3G01 Auxiliary Contact?

The ABB OA3G01 is a compact and dependable auxiliary contact block designed for use with compatible ABB low voltage switching equipment, including selected OS and OT switch-disconnector ranges. It provides reliable electrical signalling for switch position monitoring, remote indication and control circuit integration.

Featuring 1 normally closed (1NC) auxiliary contact, the OA3G01 is ideal for applications where the control circuit must change state when the main switching device is operated. This makes it suitable for interlocking, feedback, safety indication and PLC input signalling within industrial control systems.

With a 16 A conventional thermal current rating, a 690 V rated voltage and compact dimensions of approximately 11 × 30 × 40 mm, the ABB OA3G01 provides a robust and space-saving auxiliary switching solution for control panels, switchgear assemblies and machine installations.

Key Advantages

• Genuine ABB auxiliary contact block for compatible switchgear.
• 1 normally closed (1NC) contact for reliable status signalling.
• 16 A conventional thermal current rating for dependable auxiliary switching.
• 690 V rated voltage suitable for industrial electrical systems.
• Compact design for efficient use of panel space.
• Supports remote indication, electrical interlocking and automation feedback.

Key Features

• ABB OA3G01 auxiliary contact.
• 1 normally closed auxiliary contact.
• Designed for selected ABB OS and OT switch-disconnector accessories.
• 16 A conventional free-air thermal current.
• 690 V rated voltage.
• Screw terminal connection for secure wiring.
• Side-mounted accessory format.
• Suitable for control, indication and monitoring circuits.

Technical Specifications

• Manufacturer: ABB
• Model: OA3G01
• Product type: Auxiliary contact block
• Contact configuration: 1 normally closed (1NC)
• Conventional free-air thermal current (Ith): 16 A
• Conventional enclosed thermal current (Ithe): 16 A
• Rated voltage: 690 V
• Connection type: Screw terminal
• Mounting method: Side mounting
• Compatible ranges: ABB OS / OT switch-disconnector accessories
• Dimensions (W × H × D): approx. 11 × 30 × 40 mm
• Weight: approx. 0.03 kg
• ABB product ID: 1SCA022456R7410
• EAN: 6417019141992

Reliable Auxiliary Switching for Industrial Control

Auxiliary contacts such as the ABB OA3G01 provide electrical feedback from a main switching device. This allows engineers to monitor switching status and connect that information to indicator lamps, relays, PLC inputs or wider automation systems.

The OA3G01 is particularly useful where a normally closed signal is required. Its compact form factor and screw terminal wiring make it a practical choice for panel builders, machine builders and maintenance engineers working with compatible ABB switchgear.

Typical Applications

• Industrial control panels and switchgear assemblies.
• Remote switch position indication.
• PLC and automation system feedback.
• Electrical interlocking circuits.
• Machine control and monitoring systems.
• Compatible ABB OS and OT switch-disconnector installations.

Trusted by Panel Builders and Industrial Engineers

ABB auxiliary contacts such as the OA3G01 are widely used in industrial switchgear and control panel applications where compact installation, dependable signalling and reliable electrical performance are required.