ABB JSHD4-4-AD-A 2TLA019995R2700 is a three-position safety enabling switch with LEDs, a front auxiliary push button, an 8-pole M12 connection and anti-tamper hand detection for controlled industrial machine operation.
The ABB JSHD4-4-AD-A is an ergonomic three-position safety enabling switch designed for controlled machine operation when an authorised operator needs to work within or close to a hazardous machine area. Identified by ABB order code 2TLA019995R2700, it forms part of the ABB Jokab Safety JSHD4 series of handheld enabling devices for industrial machinery, robotics and automation systems.
The JSHD4-4-AD-A combines a three-position enabling mechanism with integrated LED indicators, a front auxiliary push button and anti-tamper functionality. The three-position operating principle allows machine movement to be enabled while the operator intentionally holds the device in its permitted position, while releasing or fully depressing the actuator changes the safety contact state. This makes it particularly suitable for troubleshooting, test running, programming and machine setup applications.
This configuration combines the JSHD4-4 top section with the AD bottom section featuring an 8-pole M12 connection and anti-tamper PCB. The quick-connect M12 interface simplifies installation and replacement, while the anti-tamper function provides hand detection to help prevent manipulation of the enabling device. With safety performance up to PL e and Category 4, the JSHD4-4-AD-A is designed for demanding industrial machine-safety systems.
Three-position enabling devices such as the ABB JSHD4-4-AD-A are designed for applications where machine commissioning, maintenance, troubleshooting or programming requires an operator to remain close to potentially hazardous machine movement. The enabling function provides deliberate operator control so that permission for movement can be linked to continuous intentional operation of the handheld device.
The JSHD4-4-AD-A adds anti-tamper functionality with hand detection to help prevent the enabling function from being defeated or held permanently in its operating position. Integrated LED indicators provide operator feedback, while the front auxiliary button can support an additional machine-control function. The 8-pole M12 connection provides a practical quick-connect interface for installation into compatible industrial safety systems.
| Manufacturer | ABB |
|---|---|
| Series | ABB Jokab Safety JSHD4 |
| Model | JSHD4-4-AD-A |
| Manufacturer part number | 2TLA019995R2700 |
| Product type | Safety control enabling device |
| Number of operating positions | 3 |
| Status indication | Integrated LEDs |
| Additional control | Front auxiliary push button |
| Anti-tamper function | Integrated anti-tamper PCB with hand detection |
| Electrical connection | M12 connector |
| Number of connector poles | 8 |
| Performance level | Up to PL e |
| Safety category | Category 4 according to ISO 13849-1 |
| Dimensions (H × W × D) | approx. 117 × 34 × 80 mm |
| Net weight | approx. 0.325 kg |
| EAN | 7350024453614 |
The ABB JSHD4-4-AD-A is a three-position safety enabling switch designed for controlled machine operation during activities such as troubleshooting, test running, programming, commissioning and machine setup.
The manufacturer part number for the ABB JSHD4-4-AD-A enabling switch is 2TLA019995R2700.
The JSHD4-4-AD-A incorporates an anti-tamper PCB with hand detection, while retaining the three-position enabling function, LED indicators, front auxiliary push button and 8-pole M12 connection of the JSHD4-4-AD configuration.
The ABB JSHD4-4-AD-A uses an 8-pole M12 connection, providing a convenient quick-connect interface for integration into compatible machine safety and control systems.
The ABB JSHD4-4-AD-A supports safety functions up to PL e and Category 4 according to ISO 13849-1 when correctly integrated into an appropriate safety-control architecture.
ABB Jokab Safety JSHD4 enabling devices provide ergonomic operator control for industrial machinery, with the JSHD4-4-AD-A combining three-position enabling, LED indication, an auxiliary front button, M12 connectivity and anti-tamper hand detection for demanding machine setup, troubleshooting and programming applications.
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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...