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ABB jshd4-1-aa Enabling Switch
ABB JSHD4-1-AA 2TLA019995R0000 is a 24 V DC three-position enabling device with dual-channel safety contacts, five screw connections and a cable gland for controlled machine operation during troubleshooting, programming and test running.
£293.49
Why Choose the ABB JSHD4-1-AA 2TLA019995R0000 Enabling Switch?
The ABB JSHD4-1-AA 2TLA019995R0000 is a robust three-position enabling device designed for safe machine intervention during troubleshooting, test running, programming and commissioning. Part of the ABB Jokab Safety JSHD4 range, it is intended to give an operator controlled access to hazardous machine areas while allowing machine functions to be enabled only when the device is deliberately held in its middle position.
The JSHD4 uses a three-position operating principle: the machine safety function is not enabled when the actuator is released, it is enabled when held in the central position, and it is deactivated again if the operator squeezes the device fully. This arrangement provides an important additional layer of protection during maintenance and manual machine operation because both releasing and over-travelling the enabling control produce a stop condition.
The JSHD4-1-AA version has no auxiliary buttons or LEDs and is supplied with a cable gland and five screw connections for customer wiring. The device is designed for use with 24 V DC safety circuits and its ergonomic yellow-and-black handheld construction makes it suitable for industrial environments where operators need a practical and dependable enabling control.
Key Advantages
- Ergonomic three-position enabling switch for machine safety applications.
- Enables machine operation only while deliberately held in the middle position.
- Returns to a safe condition when either released or fully depressed.
- Ideal for troubleshooting, programming, test running and commissioning.
- 24 V DC operating voltage for integration with industrial safety systems.
- Two-channel enabling contact arrangement supports redundant safety architectures.
- Cable gland with five screw connections for flexible customer wiring.
- No unnecessary auxiliary buttons or LEDs on the JSHD4-1 top section.
- Compact handheld design with approximately 15 N operating force to the enabled position.
- Durable industrial construction with long mechanical service life.
Key Features
- ABB Jokab Safety JSHD4 three-position enabling device.
- Model JSHD4-1-AA.
- Manufacturer part number 2TLA019995R0000.
- 24 V DC ±10% operating voltage at 20 °C ambient temperature.
- Three-position safety operating principle.
- Two enabling channels.
- Electrical contacts include COM1, NO1, COM2, NO2 and NC1.
- Maximum three-position contact rating of 30 V DC, 20 mA.
- Minimum three-position contact load of 10 V DC, 8 mA.
- Approximate operating force of 15 N to the ON position.
- Approximate operating force of 45 N to the fully depressed OFF position.
- Five-pole screw-terminal connection.
- Cable gland for customer-selected cable.
- Suitable cable diameter of approximately 3.5–8 mm.
- Yellow and black ergonomic housing.
Three-Position Safety Control for Machine Intervention
The ABB JSHD4-1-AA is designed around a three-position enabling principle that helps protect personnel who must enter or work close to hazardous machine areas during troubleshooting, setup or programming. In the released position, the enabling contacts do not permit hazardous machine functions. When the handle is deliberately pressed to its middle position, the safety system can permit controlled machine operation.
If the operator reacts instinctively to a hazardous situation by either releasing the device or gripping it tightly enough to press it into the third position, the enabling signal is removed. This three-position behaviour makes the JSHD4 especially useful for tasks where personnel must maintain direct control over whether machine movement is permitted while inside or near a safeguarded area.
Typical Applications
- Machine troubleshooting and fault finding.
- Manual test running of industrial machinery.
- Robot and automation-cell programming.
- Machine commissioning and setup.
- Maintenance inside safeguarded machine areas.
- Reduced-speed or controlled-motion machine operation.
- Production equipment adjustment and calibration.
- Industrial robotics and automated manufacturing systems.
- Machinery requiring a three-position enabling device for intervention tasks.
Technical Specifications
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| Device Type | Enabling device | |
|---|---|---|
| Coil / Supply Voltage | 24 V DC | |
| Manufacturer | ABB | |
| Product family | ABB Jokab Safety | |
| Series | JSHD4 | |
| Model | JSHD4-1-AA | |
| Manufacturer part number | 2TLA019995R0000 | |
| Product type | Three-position enabling device | |
| Application | Machine enabling / hold-to-run safety control | |
| Operating voltage | 24 V DC ±10% at 20 °C | |
| Three-position contact current | Maximum 20 mA | |
| Maximum contact voltage | 30 V DC | |
| Minimum contact load | 10 V DC, 8 mA | |
| Operating positions | Released / enabled / fully depressed | |
| Enabling contact arrangement | Dual channel | |
| Electrical terminals | COM1, NO1, NC1, COM2, NO2 | |
| Number of screw connections | 5 | |
| Connection type | Cable gland with internal screw terminals | |
| Conductor cross-section | 0.5–2.5 mm² | |
| Wire stripping length | 5.0–5.5 mm | |
| Terminal tightening torque | 0.5 N·m | |
| Cable diameter | 3.5–8 mm | |
| Operating force to enabled position | Approximately 15 N | |
| Operating force to fully depressed OFF position | Approximately 45 N | |
| Mechanical life, top to middle position | 1,000,000 cycles | |
| Mechanical life, middle to bottom position | 100,000 cycles | |
| Handle material | Polyamide / Noryl | |
| Rubber material | NBR | |
| Colour | Yellow and black | |
| Weight | Approximately 0.2 kg without cable | |
| Top configuration | JSHD4-1, no LEDs and no auxiliary buttons | |
| Bottom configuration | AA, customer cable via cable gland | |
| HS Code | 85365019 | |
| Country of Manufacture | Sweden |
Frequently Asked Questions
What is the ABB JSHD4-1-AA 2TLA019995R0000 used for?
The ABB JSHD4-1-AA is a three-position enabling device used during troubleshooting, programming, test running, setup and other tasks where an operator needs controlled machine operation while working close to hazardous equipment.
How does the three-position function of the JSHD4 work?
The device has three operating states. Machine enabling is inactive when the control is released, active when it is deliberately held in the middle position, and inactive again when the handle is fully depressed.
What operating voltage does the ABB JSHD4-1-AA use?
ABB specifies an operating voltage of 24 V DC ±10% at an ambient temperature of 20 °C.
What connections are provided on the JSHD4-1-AA?
The JSHD4-1-AA provides five internal screw connections associated with COM1, NO1, NC1, COM2 and NO2, with the external cable entering through the AA cable gland.
Does the JSHD4-1-AA have auxiliary push buttons or LEDs?
No. The JSHD4-1 top section is the basic version without auxiliary push buttons or LEDs, making it suitable where only the three-position enabling function is required.
What cable size can be used with the JSHD4-1-AA cable gland?
The AA cable gland is designed for cables with an outside diameter of approximately 3.5–8 mm.
What conductor sizes can be connected to the JSHD4-1 screw terminals?
The five-pole screw-terminal block accepts solid, flexible or stranded conductors with cross-sections of approximately 0.5–2.5 mm².
What force is required to operate the ABB JSHD4?
The specified operating force is approximately 15 N to reach the enabled middle position and approximately 45 N to reach the fully depressed OFF position.
What is the mechanical life of the JSHD4 three-position mechanism?
ABB specifies approximately 1,000,000 cycles from the released to middle position and approximately 100,000 cycles from the middle to fully depressed position.
Trusted by Machine Safety Professionals
ABB Jokab Safety JSHD4 enabling devices are designed for controlled machine intervention tasks such as troubleshooting, programming and test running, combining an ergonomic handheld format with a three-position safety principle that removes the enabling signal if the operator either releases or fully squeezes the device.
