ABB JSHD4-5-AH-A 2TLA019995R4100 three-position safety enabling switch with LEDs, top push-button, anti-tamper PCB and cable gland with 10 screw connections for controlled machine setup and maintenance.
The ABB JSHD4-5-AH-A 2TLA019995R4100 is a professional three-position safety enabling switch designed for controlled machine operation when an operator needs access to a hazardous area during setup, programming, troubleshooting or maintenance. Part of the ABB Jokab Safety JSHD4 series, this ergonomic handheld device provides a deliberate enabling function that can be incorporated into high-performance machine safety systems.
The JSHD4 three-position principle enables machine movement only when the operator deliberately holds the actuator in its centre position. Releasing the actuator or pressing it fully to the third position removes the enabling condition, allowing the connected safety control system to stop hazardous machine movement. This operating principle makes the device particularly suitable for robot teaching, machine adjustment and maintenance procedures.
The JSHD4-5-AH-A configuration combines integrated LED indicators and a top push-button with an AH bottom section featuring a cable gland and 10 screw connections for simplified connection using the installer’s own cable. Unlike the standard JSHD4-5-AH, this -A version also incorporates an anti-tamper PCB for enhanced monitoring of the enabling device.
Three-position enabling devices are used where personnel need controlled access to hazardous machine areas while certain machine movements remain necessary. The JSHD4 operating principle requires the actuator to be deliberately maintained in its centre position; releasing it or squeezing it fully removes the enabling condition, providing an intuitive response to both release and panic-type reactions.
The JSHD4-5-AH-A adds anti-tamper functionality to this established enabling principle and provides simplified field wiring through its cable gland and 10 screw connections. When incorporated into a properly designed safety circuit, the device is suitable for demanding machine safety applications requiring controlled manual intervention and high safety integrity.
| Manufacturer | ABB |
|---|---|
| Product family | Jokab Safety |
| Series | JSHD4 |
| Model | JSHD4-5-AH-A |
| Part number | 2TLA019995R4100 |
| Product type | Safety control enabling device |
| Enabling function | Three-position |
| Top section | LEDs and top push-button |
| Bottom section | AH |
| Connection | Cable gland and 10 screw connections |
| Connection configuration | Simplified connection using installer-supplied cable |
| Anti-tamper | Integrated anti-tamper PCB |
| Performance level | Up to PL e |
| Safety category | Category 4 according to ISO 13849-1 |
| Product dimensions (H × W × D) | 167 × 34 × 50 mm |
| Product net weight | 0.318 kg |
| EAN | 7350024453751 |
The JSHD4-5-AH-A is a three-position enabling device used for controlled machine operation during tasks such as setup, robot teaching, troubleshooting and maintenance where an operator needs access to a hazardous machine area.
The enabling condition is maintained when the actuator is deliberately held in its centre position. Releasing the actuator or pressing it fully to the third position removes the enabling condition so the connected safety system can stop hazardous movement.
The JSHD4-5-AH-A includes an anti-tamper PCB, while retaining the LEDs, top push-button, cable gland and 10 screw connection arrangement of the AH configuration.
The AH configuration provides a cable gland and 10 screw connections, allowing a suitable installer-supplied cable to be used for simplified connection.
When correctly incorporated into an appropriate machine safety system, the JSHD4 series can support safety functions up to PL e, Category 4 according to ISO 13849-1.
ABB Jokab Safety JSHD4 enabling devices are designed for machine builders, automation engineers and safety professionals requiring dependable three-position operator control during machine setup, programming, commissioning and maintenance.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...