ABB JSHD4-3-AB 2TLA019995R1200 is an ergonomic three-position safety enabling switch with dual-channel enabling contacts, integrated LED indication and a 12-pin Cannon male connection for controlled industrial machine operation.
The ABB JSHD4-3-AB 2TLA019995R1200 is an ergonomic three-position safety enabling switch designed for controlled machine operation during troubleshooting, test running, programming and other tasks requiring access to hazardous machinery areas. Part of the ABB Jokab Safety JSHD4 range, it provides a deliberate enabling function that can be integrated into high-performance machine safety systems.
The JSHD4 three-position operating principle allows machinery to be enabled only while the operator deliberately maintains the actuator in its centre enabled position. Releasing the actuator or pressing it fully removes the enabling condition, allowing the connected safety system to stop hazardous machine movement. This provides an intuitive operator response during machine setup, commissioning and servicing.
The JSHD4-3-AB combines the JSHD4-3 upper section, which features integrated red and green LED indication without auxiliary push buttons, with the robust AB lower section featuring a 12-pin Cannon male connection. This configuration provides a straightforward enabling solution where additional top or front control buttons are not required.
Three-position enabling devices are particularly valuable when normal machine guarding must be temporarily bypassed for authorised setup, programming or diagnostic operations. The ABB JSHD4-3-AB provides a deliberate enabling function that allows controlled machine movement while the operator actively maintains the device in its enabled position.
If the operator releases the actuator or instinctively grips it fully in response to an unexpected event, the enabling state is removed so the associated safety system can initiate the required machine stop. The JSHD4-3-AB combines this functionality with LED indication and a robust 12-pin Cannon connection, providing a focused solution without the additional push buttons fitted to other JSHD4 variants.
| Manufacturer | ABB |
|---|---|
| Series | JSHD4 / ABB Jokab Safety |
| Model | JSHD4-3-AB |
| Manufacturer part number | 2TLA019995R1200 |
| Product type | Safety control enabling device |
| Operating principle | Three-position enabling switch |
| Enabling channels | Dual channel |
| Channel 1 contacts | COM1, NO1 and NC1 |
| Channel 2 contacts | COM2, NO2 and NC2 |
| Status indication | Integrated red and green LEDs |
| Auxiliary push buttons | None |
| Connection | 12-pin Cannon male connector |
| Performance Level | Up to PL e |
| Safety Category | Up to Category 4 |
| Product width | 34 mm |
| Product height | 117 mm |
| Product depth | 50 mm |
| Product net weight | 0.334 kg |
| EAN | 7350024453461 |
The JSHD4-3-AB is a three-position safety enabling device designed for controlled machine operation during activities such as troubleshooting, test running, programming, setup and maintenance.
No. The JSHD4-3 upper section includes LED indication but no auxiliary front or top push buttons, making it suitable for applications where only the enabling and indication functions are required.
The JSHD4-3-AB uses the ABB AB bottom section with a robust 12-pin Cannon male connector for connection to the machine safety and control system.
The enabling condition is maintained while the operator deliberately holds the actuator in its centre enabled position. Releasing the actuator or pressing it fully removes the enabling condition, allowing the connected safety system to stop hazardous machine movement.
When correctly incorporated into a suitable machine safety architecture, the JSHD4 enabling function can support applications up to Performance Level e (PL e) and Safety Category 4.
ABB Jokab Safety JSHD4 enabling devices provide machine builders, automation engineers and maintenance professionals with controlled access solutions for machinery setup, programming and servicing. The JSHD4-3-AB combines three-position enabling control, dual-channel contacts, LED indication and a robust 12-pin Cannon connection in an ergonomic handheld device.
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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...