ABB jshd4-2-ah Enabling Switch

Why Choose the ABB JSHD4-2-AH 2TLA019995R0800 Enabling Switch?

The ABB JSHD4-2-AH 2TLA019995R0800 is an ergonomic three-position enabling device designed for controlled machine operation when an operator must work inside or close to a hazardous area. Part of the ABB Jokab Safety JSHD4 range, it is particularly suited to troubleshooting, test running, programming, commissioning and other machine-intervention tasks where limited movement needs to remain possible under deliberate operator control.

The JSHD4-2-AH combines the three-position enabling mechanism with integrated LED indication, a front push button and a top push button. Its AH bottom section incorporates a cable gland and PCB with 10 screw connections, providing flexible hard-wired integration into the machine control and safety system without requiring a fixed factory-fitted cable.

The enabling mechanism permits operation only while deliberately held in its middle position. Releasing the actuator or squeezing it fully removes the enabling condition, providing intuitive protection during machine intervention. With an IP65 enclosure, industrial-grade construction and a compact handheld format, the JSHD4-2-AH provides a practical solution for machinery requiring operator-controlled enabling together with auxiliary control functions.

Key Advantages

• Ergonomic three-position enabling device for industrial machine-safety applications.
• Enables controlled machine operation only while deliberately held in the middle position.
• Returns to a non-enabled state when either released or fully depressed.
• Integrated LED indication provides clear visual status information.
• Includes a front push button and top push button for auxiliary machine-control functions.
• Cable gland allows the installer to select suitable machine cabling.
• Internal PCB with 10 screw connections simplifies hard-wired installation.
• IP65 protection supports use in demanding industrial environments.
• Ideal for troubleshooting, test running, programming and machine commissioning.
• Ergonomic handheld construction provides convenient operator control near machinery.

Key Features

• ABB Jokab Safety JSHD4 enabling device.
• Model JSHD4-2-AH.
• Manufacturer part number 2TLA019995R0800.
• Three-position enabling operating principle.
• Dual-channel enabling contact arrangement.
• Integrated LED indication.
• Front auxiliary push button.
• Top auxiliary push button.
• AH bottom section with cable gland.
• Internal PCB with 10 screw connections.
• Contact-based electrical interface.
• IP65 degree of protection.
• Designed for controlled machine movement during intervention tasks.
• Handle manufactured from industrial-grade polyamide/Noryl material.
• NBR rubber components.
• Compact yellow-and-black handheld design.

Three-Position Enabling with Auxiliary Machine Controls

The ABB JSHD4-2-AH uses a three-position enabling principle designed to allow limited machine movement while an operator is inside or close to a hazardous area. In the released position the enabling condition is absent. Deliberately pressing the actuator to its middle position permits the associated safety system to enable controlled machine functions, while pressing the actuator fully removes the enabling condition again.

The JSHD4-2 top section adds LED indication plus front and top push buttons, allowing auxiliary functions to be incorporated into the handheld control according to the machine design. The AH bottom section provides a cable gland and an internal PCB with 10 screw connections, making this version particularly suitable where the installer requires flexible hard-wired cabling rather than an M12 connector. Unlike the JSHD4-2-AH-A variant, the 2TLA019995R0800 version does not incorporate the additional anti-tamper PCB.

Typical Applications

• Machine troubleshooting and fault finding.
• Industrial robot programming and teaching.
• Manual test running of automated machinery.
• Machine commissioning and setup.
• Maintenance inside safeguarded machine areas.
• Controlled reduced-speed machine movement.
• Production equipment adjustment and calibration.
• Automated manufacturing and assembly cells.
• Machine tools requiring operator-controlled enabling.
• Applications requiring auxiliary push buttons on the enabling device.
• Hard-wired enabling-device installations requiring screw-terminal connections.