3TX7686-1A

The Siemens SIRIUS 3TX7686-1A is a mechanical interlocking device used to lock two sets of 3TF68 or 3TD68 contactors of the same specification to prevent them from engaging simultaneously. It is commonly used in forward/reverse or interlocking control circuits to improve the safety of the distribution panel.

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Siemens SIRIUS 3TX7686-1A Contactor Mechanical Interlocking Device

Product Positioning

The 3TX7686-1A is a mechanical interlocking device specifically designed for Siemens SIRIUS series large contactors. It is used to lock two sets of 3TF68/3TD68 contactors of the same size to prevent simultaneous operation that could cause a short circuit or equipment damage.

Core Product Advantages and Features

Double contactor mechanical interlock

It can lock two sets of 3TF68 or 3TD68 contactors of the same specification at the same time to prevent them from engaging simultaneously.

Safety protection for forward and reverse circuits

It is commonly used in motor forward and reverse control circuits to avoid the risk of power short circuits.

Original parts

These are original equipment manufacturer (OEM) parts for SIRIUS large contactor series, ensuring excellent installation compatibility.

Improve the reliability of the distribution panel

By replacing simple electrical interlocks with mechanical locking, the system's safety redundancy is enhanced.

project	Specification
Product Type	Contactor mechanical interlocking device
Applicable contactors	3TF68 and 3TD68 series (2 sets of contactors of the same size)
Function	Mechanical interlock of locking device
Product Series	SIRIUS 3TX7
Manufacturing country	Germany
net weight	Approximately 1.8 kg (4.00 lbs)

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3TX7681-1A

The Siemens SIRIUS 3TX7681-1A is a mounting base accessory designed specifically for the 3TD68 series large contactors. It provides a stable mounting base and simplifies the fixing and wiring of contactors in the distribution panel. It is an original manufacturer-specified special part.