ABB JSHD4-4-AB 2TLA019995R2400 is an ergonomic three-position safety enabling switch with dual-channel enabling contacts, integrated LED indication, a front auxiliary push button and a 12-pin Cannon male connection for controlled industrial machine operation.
The ABB JSHD4-4-AB 2TLA019995R2400 is an ergonomic three-position safety enabling switch designed for controlled machine operation during setup, programming, troubleshooting, test running and maintenance. Part of the ABB Jokab Safety JSHD4 range, this complete handheld device combines the three-position enabling function with integrated LED indication and a front auxiliary push button.
The three-position operating principle enables controlled machinery movement 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 associated safety control system to stop hazardous machine functions. This makes the JSHD4 particularly useful when authorised personnel need controlled access within safeguarded machinery areas.
The JSHD4-4-AB combines the JSHD4-4 upper section, featuring integrated LEDs and a front push button, with the AB lower section providing a 12-pin Cannon male connection. This combination delivers a robust handheld operator interface for machine builders and automation engineers requiring both safety enabling and an additional control command.
Three-position enabling devices provide an important operator interface when machinery must be operated under controlled conditions during activities requiring access inside a safeguarded area. The ABB JSHD4-4-AB maintains the enabling condition only while the operator deliberately holds the actuator in its intended centre position, helping ensure that machinery cannot remain enabled if the device is released or fully depressed.
The JSHD4-4-AB also incorporates a front auxiliary push button that can be used for an additional machine-control command appropriate to the application. Combined with integrated LED indication and the robust 12-pin Cannon connection, this configuration provides a practical solution for commissioning, programming, adjustment and maintenance of industrial machinery.
| Manufacturer | ABB |
|---|---|
| Series | JSHD4 / ABB Jokab Safety |
| Model | JSHD4-4-AB |
| Manufacturer part number | 2TLA019995R2400 |
| 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 control | Front push button |
| Connection | 12-pin Cannon male connector |
| Performance Level | Up to PL e |
| Safety Category | Category 4 |
| Product width | 34 mm |
| Product height | 117 mm |
| Product depth | 50 mm |
| Product net weight | 0.338 kg |
| EAN | 7350024453584 |
The JSHD4-4-AB is a three-position safety enabling device designed to permit controlled machine operation during setup, programming, troubleshooting, test running, commissioning and maintenance.
Yes. The JSHD4-4 upper section includes a front auxiliary push button in addition to the three-position enabling function and integrated LED indication.
The JSHD4-4-AB uses a robust 12-pin Cannon male connector for connection to the associated 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 so that the connected safety system can stop hazardous machine movement.
When correctly incorporated into an appropriate 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 machine-operation solutions for setup and servicing. The JSHD4-4-AB combines three-position enabling control, dual-channel contacts, LED indication, a front auxiliary push button 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...