IMO PB09C Mushroom Head Push Button – 22mm Red Momentary Actuator

This is the IMO PB09C Mushroom Head Push Button – a 22mm Red Momentary Actuator available at SparksDirect for the best price. Purchase this item with confidence at Sparks today.

The IMO PB09C is a 22mm modular push button featuring a prominent 40mm red mushroom-style actuator. It operates with a momentary action (spring return), meaning the electrical contact state only changes while the button is physically held down. This makes it ideal for priority stop functions or manual commands that require a large, easy-to-hit surface.

Built for heavy-duty industrial use, the unit is constructed from UV-stabilised, impact-resistant polycarbonate. It carries a high ingress protection rating of IP67, making it completely dust-tight and resistant to water jets or temporary immersion. As a modular component, the mushroom head clips onto a separate mounting collar, which then accepts various combinations of Normally Open (NO) or Normally Closed (NC) contact blocks depending on your wiring logic. The IMO PB09C is a high-visibility mushroom-head push button designed for industrial control applications. Unlike standard flat buttons, its large 40mm head allows for rapid activation, making it ideal for non-latching stop commands or priority signals where easy target acquisition is essential.

Technical Specifications

• Model Number: PB09C
• Type: Momentary Mushroom Push Button (Non-Illuminated)
• Actuator Profile: 40mm Mushroom Head
• Actuator Colour: Red
• Mounting Diameter: 22mm
• Ingress Protection: IP67 (Dust-tight and waterproof)
• Mechanical Life: Greater than 1,000,000 operations
• Operating Temperature: -25°C to +70°C
• Material: High-grade Polycarbonate
• Standards: IEC 60947-5-1, EN 60947-5-1, CE, UL

Frequently Asked Questions

Q: Is this an Emergency Stop button?

A: No. While it has a red mushroom head, it is momentary (spring return). A true Emergency Stop must be a latching "stay-put" device. The PB09C is used for standard stop functions or priority inputs where the latching safety requirement is not needed.

Q: Does this include the internal switching contacts?

A: No. The PB09C is the actuator (the part you see and press). For a complete assembly, you will also need a mounting collar and the relevant contact blocks (usually a Normally Closed block for a stop function).

Q: What is the benefit of a mushroom head over a flush button?

A: The large surface area makes it much easier to activate quickly, especially if the operator is wearing heavy gloves or needs to stop a process without looking directly at the control panel.

Who can install this?

Installation should be performed by a qualified electrician or industrial technician. Because of its prominent profile, the installer should ensure the button is positioned where it is easy to reach but protected from accidental physical impacts. Proper wiring and the selection of the correct contact blocks are essential to ensure the button performs its intended control function reliably.

What is this for?

The IMO PB09C is a specialized interface for High-Visibility Control:

• Priority Stop: Used as a standard "Stop" button that is easier to hit than a flush button, without the safety latching of an E-Stop.
• Machine Indexing: Providing a large target for "Jog" or "Cycle Start" commands in production environments.
• Process Interruption: Serving as a manual interrupt for automated sequences that require frequent operator attention.
• Alarm Acknowledge: Providing a prominent physical input for silencing industrial sirens or acknowledging system warnings.

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