704.910.4 Contact block strip

704.910.4 Contact block strip

Product Details Introduction

1. Product Overview

Model: 704.910.4

Type: Modular Contact Block Strip

Purpose: Auxiliary contact expansion for industrial relays/contactors

Typical brand: Contactor accessories that may correspond to brands such as Siemens, ABB, or Schneider

2. Core Features

Modular design: Multiple contact blocks can be freely combined

Contact type:

Normally open (NO)

Normally closed (NC)

Mixed type (NO+NC)

Electrical parameters:

Rated current: 5-10A (AC-15 category)

Rated voltage: 250VAC/30VDC

Mechanical lifespan: ≥ 1 million operations

3. Structural description

Component Function

The base is fixed to the contactor body

Sliding buckle enables quick assembly of multiple contact blocks

Contact module can be replaced separately (silver alloy contacts)

Wire terminal screw crimping type (wire diameter 0.5-2.5mm ²)

4. Compatibility reference

Possible matching main contactors:

Siemens 3RT/3TF series

Schneider LC1D series

ABB A-series

Installation method:

Side plug-in installation

Up to 8 auxiliary contacts can be expanded

5. Installation steps

Power off operation: Ensure that the main circuit is completely powered off

Dismantling old modules:

Gently pry open the buckle with a flat screwdriver

Install new module:

Align with the guide rail slot and insert horizontally

The 'click' sound indicates that it is locked in place

Wiring verification:

Use a multimeter to check the on/off status of the contacts

Product imag

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