A-B 100-DS2-11 Auxiliary Contact Block

A-B 100-DS2-11 Auxiliary Contact Block

The Allen-Bradley 100-DS2-11 is an auxiliary contact block used with Allen-Bradley 100 series contactors (100-D series).

Product Information

• Brand: Allen-Bradley (Rockwell Automation)
• Part Number: 100-DS2-11
• Type: Auxiliary Contact Block
• Function: Adds extra auxiliary NO/NC contacts to a contactor

Electrical Configuration

• Contact arrangement: 1 NO + 1 NC (one normally open, one normally closed)
• Mounting type: Side-mounted (snap-on to contactor)
• Application: Works with 100-D series contactors
• Rated control duty: Low current control signal switching

Function (Simple Explanation)

This is not a power switching device itself.

It is used to:

• Provide status feedback signals (ON/OFF indication)
• Expand contactor auxiliary circuits
• Interface with PLC inputs or control circuits
• Enable interlocking logic in control panels

Application Areas

• Motor control centers (MCC)
• Industrial control panels
• PLC interlocking systems
• Contactor status feedback circuits
• Automation safety interlocks

Key Features

• Compact side-mount design
• Quick installation on 100-D contactors
• Provides both NO and NC auxiliary contacts
• Reliable mechanical switching
• Used for signal-level control (not power load switching)

Precautions

• Must match correct 100-D series contactor
• Not designed for high current loads
• Mechanical wear occurs with switching cycles
• Ensure proper mounting alignment for reliable contact