Abb cr104ptr20a0r01 Push Button Red Mushroom Head 1NC

Product Description

The ABB cr104ptr20a0r01 is a red mushroom-head push button with a push-and-twist-to-release mechanism and one normally closed (1NC) contact block. Built to the 30 mm industry-standard form factor, this operator-style control device is designed for use on industrial control panels, machine enclosures, and emergency-stop circuits where a latching, manually-reset actuation is required. The oversized 1-3/8 inch mushroom head provides a large target surface for fast, reliable actuation. Electricians and controls technicians install this type of device when the application calls for a maintained-contact, twist-release push button rather than a momentary or key-release type.

This push button is suited for industrial machine control, motor control center panels, conveyor systems, and other applications that require a red mushroom-head stop or emergency-function operator. The 30 mm mounting footprint is a widely used standard in North American and international industrial control panel design. The 1NC contact configuration is commonly wired into safety or stop circuits, where the normally closed state interrupts power when the button is actuated and holds until deliberately released by twisting the head.

Key Features

• Push-and-twist-to-release mechanism provides a maintained-contact, manually-reset actuation
• Red color coding and oversized 1-3/8 inch mushroom head for high-visibility stop or emergency-function applications
• 1 normally closed (1NC) contact block included
• 30 mm standard mounting diameter for broad panel compatibility
• Operator-style modular design typical of 30 mm control device families

Compatibility

Designed as an OEM-style operator for 30 mm push button control stations and panel cutouts compatible with standard 30 mm modular contact block systems.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NFPA 70 (NEC) and applicable local codes. De-energize and lock out the control panel before removing or installing any push button operator or contact block. Verify that the panel cutout matches the 30 mm mounting diameter before installation. Confirm contact block wiring matches the intended normally closed circuit logic before restoring power.