A-B 700-PB40 Push Button

The Allen-Bradley 700-PB40 is a Bulletin 700 industrial push button operator / control station component, used in control circuits and relay-based industrial panels.

Product Information

• Brand: Allen-Bradley (Rockwell Automation)
• Series: Bulletin 700-P
• Part Number: 700-PB40
• Type: Push Button / Operator Component (control station accessory)
• Function: Manual control input device for industrial circuits
• Mounting: Panel-mounted (industrial control station system)

What it actually is

Despite the name “PB40”, this is not just a simple button contact block like 800F/800H.

It belongs to the 700-P modular control system, meaning:

• It is part of a complete control station assembly
• It works together with contact blocks, housings, and relay systems
• It is often used as a push button actuator or auxiliary operator element

Function (Simple Explanation)

This device is used to:

• Send manual ON/OFF commands
• Control relays or contactors indirectly
• Act as a human input device in industrial control panels

Typical logic:
Button pressed → contact block changes state → signal sent to relay/PLC → machine action

System Role

It is used in:

• Relay control panels (Bulletin 700 relays)
• Motor start/stop circuits
• Industrial machine control stations
• Interposing relay systems

It does not directly switch power loads, it only provides control signals.

Typical Applications

• Machine start/stop stations
• Conveyor control panels
• Motor control circuits (via relays/contactors)
• Industrial automation control panels
• Legacy Rockwell relay-based systems

Key Features

• Industrial-grade modular design
• Compatible with Bulletin 700 relay systems
• Flexible combination with contact blocks
• Suitable for harsh industrial environments
• Reliable manual control interface

Precautions

• Must be used with correct 700 series mounting and contact components
• Not a standalone switch in most applications
• Electrical function depends on installed contact blocks
• Not interchangeable with 800F / 800H push button systems
• Mainly used in legacy or relay-based control panels