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OA1G10AU ABB Normally Open Gold Auxiliary Contact

OA1G10AU ABB Normally Open Gold Auxiliary Contact

ABB OA1G10AU 1SCA022436R7910 is a normally open gold-plated early-break auxiliary contact for signalling, control and interlocking functions on compatible ABB low-voltage switching equipment.

SKU: OA1G10AUAlt SKU: 1SCA022436R7910MPN: OA1G10AU
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Why Choose the ABB OA1G10AU Normally Open Gold Auxiliary Contact?

The ABB OA1G10AU, order number 1SCA022436R7910, is a normally open gold-plated auxiliary contact designed for compatible ABB low-voltage switching equipment. Part of the ABB 311020-OT/OETL Accessories product group, it provides an additional signalling contact for switch position indication, control and interlocking circuits.

The OA1G10AU provides 1 normally open (1NO) contact with an early-break function. On compatible switches, this means the normally open auxiliary contact opens before the main contacts open. The contact block uses snap-on side mounting, providing straightforward integration into suitable ABB switch-disconnector and transfer-switch assemblies.

The AU gold-plated contact version is specifically intended for demanding operating conditions and low-voltage signalling applications where reliable contact performance is important. ABB specifies a conventional free-air thermal current of 16 A and a rated insulation voltage of 690 V for the OA1G auxiliary contact family.

Key Advantages

  • Provides 1 normally open auxiliary contact for compatible ABB switching equipment.
  • Gold-plated contact designed for demanding conditions and low-voltage circuits.
  • Early-break operation opens the auxiliary contact before the switch main contacts open.
  • Convenient snap-on mounting to compatible switches.
  • 16 A conventional free-air thermal current.
  • Manufacturer-matched ABB accessory for signalling, control and interlocking applications.

Key Features

  • ABB OA1G10AU auxiliary contact block.
  • ABB order number 1SCA022436R7910.
  • 1NO normally open contact.
  • Gold-plated contact construction.
  • Early-break auxiliary contact function.
  • Contact numbering according to EN 50013.
  • Snap-on side mounting on compatible ABB switching equipment.
  • 16 A conventional free-air thermal current (Ith).
  • 690 V rated insulation voltage (Ui).
  • Maximum cable cross-section of 2 × 2.5 mm².
  • Compact dimensions of approximately 11 × 37 × 21 mm.
  • EAN 6417019139029.

Reliable Gold-Plated Auxiliary Signalling

Auxiliary contacts allow the operating state of compatible switching equipment to be incorporated into external control, indication and interlocking circuits. The ABB OA1G10AU uses a normally open early-break contact, meaning that its auxiliary circuit opens before the switch's main contacts open during the relevant switching sequence.

The gold-plated AU contact version is designed for particularly demanding conditions and low-voltage applications. This makes the OA1G10AU especially useful where dependable switching of low-level signalling circuits is required alongside compatible ABB switch-disconnectors, transfer switches and related low-voltage switching equipment.

Typical Applications

  • Switch position signalling and indication.
  • Low-voltage control and monitoring circuits.
  • Electrical interlocking circuits.
  • Compatible ABB OT switch-disconnector installations.
  • Compatible ABB OTM transfer and motor-operated switch installations.
  • Industrial switchboards and distribution panels.
  • Machinery isolation and control systems.
  • OEM panel building and automation integration.

Technical Specifications

Product group 311020-OT/OETL Accessories
Order code OA1G10AU
ABB order number 1SCA022436R7910
Product type Auxiliary contact block
Contact configuration 1NO normally open
Contact material Gold-plated
Contact function Early break
Conventional free-air thermal current (Ith) 16 A
Rated insulation voltage (Ui) 690 V
Maximum cable cross-section 2 × 2.5 mm²
Mounting Snap-on side mounting
Contact numbering EN 50013
Product width approx. 11 mm
Product height approx. 37 mm
Product depth approx. 21 mm
EAN 6417019139029

Frequently Asked Questions

What is the ABB OA1G10AU used for?

The ABB OA1G10AU is a normally open gold-plated auxiliary contact used with compatible ABB switching equipment for position signalling, monitoring, control and electrical interlocking functions.

What is the ABB order number for the OA1G10AU?

The ABB order number for the OA1G10AU auxiliary contact is 1SCA022436R7910.

Is the ABB OA1G10AU normally open or normally closed?

The OA1G10AU provides 1 normally open (1NO) contact with an early-break function.

Why does the ABB OA1G10AU use gold-plated contacts?

The AU version uses gold-plated contacts for demanding operating conditions and low-voltage applications where dependable switching of low-level signalling circuits is required.

What does early break mean on the ABB OA1G10AU?

Early break means that on compatible switching equipment the normally open auxiliary contact opens before the main contacts open, allowing the auxiliary circuit to change state ahead of the main switching circuit.

ABB Engineered OT/OETL Accessories

ABB OT/OETL accessories are designed to integrate with compatible ABB low-voltage switching equipment, helping panel builders and electrical engineers create dependable, practical and manufacturer-matched control, signalling and power distribution assemblies.