IMO PB04C Non-Illuminated Momentary Push Button – 22mm Yellow Flush Actuator

This is the IMO PB04C Non-Illuminated Momentary Push Button – a 22mm Yellow Flush Actuator available at SparksDirect for the best price. Purchase this item with confidence at Sparks today.

The IMO PB04C is a high-quality, non-illuminated yellow push button designed for industrial control applications. It is part of a modular range and is typically used for "Caution," "Start-Warning," or specific functional commands that require high visibility without being a primary "Start" or "Stop" control. The IMO PB04C is a 22mm modular push button featuring a flush, yellow 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 manual override commands, alarm resets, or "Attention" signals in automated systems.

Designed for durability in demanding environments, 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. The PB04C is a modular component: the actuator clips onto a standard mounting collar, which can then hold various combinations of Normally Open (NO) or Normally Closed (NC) contact blocks to suit your wiring logic.

Technical Specifications

• Model Number: PB04C
• Type: Momentary Push Button (Non-Illuminated)
• Actuator Profile: Flush
• Actuator Colour: Yellow
• 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: What is the standard use for a yellow push button?

A: In industrial standards, yellow is often used for "Intervention" or "Abnormal Condition" functions. Common uses include resetting a tripped system, clearing an alarm, or initiating a specific sequence that requires operator caution.

Q: Does this include the mounting collar and contact blocks?

A: No. The PB04C is the actuator component only. To make it functional, you will need to add a mounting collar and at least one contact block (NO or NC) to the back of the unit.

Q: Is the yellow colour prone to fading?

A: No. The actuator is made from UV-stabilised polycarbonate, specifically designed to resist fading and becoming brittle when exposed to sunlight or harsh industrial lighting.

Who can install this?

Installation should be performed by a qualified electrician or panel builder. The installer must ensure the 22mm panel cutout is accurate and that the mounting gasket is correctly compressed to maintain the IP67 seal. Proper wiring of the contact blocks is required to ensure the push button interacts correctly with the machine's control logic.

What is this for?

The IMO PB04C is a versatile interface component for Specialised Control Panels:

• System Reset: Used to clear electronic faults or reset safety circuits after an issue has been resolved.
• Manual Intervention: Providing a command for non-standard operations, such as clearing a jam or manual lubrication cycles.
• Warning Signal: Initiating a warning siren or light before a machine starts its automated cycle.
• Process Change: Signalling the control system to move to the next stage of a multi-step industrial process.

Note: Some images and pictures are for reference only. The item may differ from the image/picture due to manufacturer's change. Should you require the exact item in the picture, please call or email us to enquire.