ABB jshd4-3-ah-a Enabling Switch

Why Choose the ABB JSHD4-3-AH-A Enabling Switch?

The ABB JSHD4-3-AH-A is an ergonomic three-position safety enabling switch designed to provide controlled machine operation when an authorised operator needs to work within or close to a hazardous machine area. Identified by ABB order code 2TLA019995R2100, it forms part of the ABB Jokab Safety JSHD4 series of handheld safety control devices for industrial machinery and automation applications.

The JSHD4-3-AH-A combines a three-position enabling function with integrated LEDs and an anti-tamper PCB. The enabling principle allows machine movement to be permitted while the operator deliberately maintains the device in its enabled position, while releasing or fully depressing the actuator changes the safety contact state. This makes the device particularly suitable for troubleshooting, test running, programming and machine setup operations.

This configuration combines the JSHD4-3 top section with an AH bottom section featuring a cable gland and PCB with 10 screw connections, together with the anti-tamper circuitry. Its compact handheld construction and high safety capability make it suitable for integration into industrial safety systems where dependable operator-controlled enabling and protection against manipulation are required.

Key Advantages

• Ergonomic three-position enabling switch for industrial machine safety.
• Integrated anti-tamper PCB helps protect against manipulation of the enabling function.
• Designed for controlled machine movement during troubleshooting, test running and programming.
• Integrated LED indication provides clear operator feedback.
• Safety performance of up to PL e according to EN ISO 13849-1.
• Category 4 safety capability according to ISO 13849-1.
• Cable gland and 10 screw connections provide convenient hard-wired installation.
• Compact and ergonomic handheld construction for machine setup and maintenance tasks.

Key Features

• ABB Jokab Safety JSHD4 series.
• Three-position handheld enabling device.
• Integrated LED indicators.
• Integrated anti-tamper PCB.
• AH bottom section with cable gland.
• PCB with 10 screw connections.
• Two-channel enabling contact arrangement for integration with safety control systems.
• Designed for intentional operator-controlled enabling during hazardous-area access.
• Suitable for integration with safety relays, safety PLCs and industrial machine controls.
• Modular JSHD4 construction for industrial machine-safety applications.

Controlled Machine Operation with Anti-Tamper Protection

Three-position enabling devices are used where machine commissioning, maintenance or programming requires an operator to remain close to potentially hazardous movement. The ABB JSHD4-3-AH-A provides deliberate operator-controlled enabling so that permission for machine movement can be linked to continuous intentional operation of the handheld device.

The integrated anti-tamper PCB distinguishes the JSHD4-3-AH-A from the standard JSHD4-3-AH configuration and is designed to help prevent manipulation of the enabling function. Combined with the integrated LEDs and 10 screw connections, this provides machine builders and automation engineers with a practical safety control device for hard-wired industrial applications.

Typical Applications

• Industrial machinery troubleshooting and fault finding.
• Machine commissioning and test running.
• Robot cells and automated manufacturing equipment.
• Machine programming and setup operations.
• Packaging and processing machinery.
• Assembly and production equipment.
• Safety PLC and safety relay controlled systems.
• OEM machinery requiring anti-tamper three-position enabling control.