ABB 2TLA010004R0000 safety relay

4. Product Overview

   The ABB model 2TLA010004R0000 (JSBT4 24DC) is a safety relay from ABB Jokab Safety series, designed for machine safety control circuits. The relay features synchronized dual-channel inputs, safety output contacts (3 NO + 1 NC), a 24 V DC supply, and is capable of achieving high safety levels (such as SIL3 / PLe / Category 4) when integrated into a safety system. It is suitable for emergency stops, safety-gate monitoring, interlocks, foot control devices, and area-sensing applications.

   Key Specifications

   • Model: 2TLA010004R0000 (JSBT4 24DC).

   • Supply voltage: 24 V DC.

   • Input channels: Synchronized dual-channel inputs (both must be closed for safety output to be enabled).

   • Output contacts: 3 normally-open (NO) + 1 normally-closed (NC).

   • Safety performance: Up to SIL3 / PLe / Category 4 (depending on system configuration).

   • Width / mounting: Approx. 45 mm wide, DIN-rail (35 mm) mounting.

   • Ambient temperature: Typical installation range –10 °C to +55 °C (please refer to specific manual).

   • Terminals: Screw-type connection.

   • Weight/dimensions: Approx. 0.35 kg; width approx. 45 mm.

   • Lifecycle status: This unit is an older/discontinued version (check for replacement models).

   Advantages & Features

   • High safety integrity: With synchronized dual-channel inputs and 3 NO + 1 NC safety outputs, suitable for high-level safety circuits.

   • Standard 24 V DC supply: Aligns with common industrial control voltage, easing integration.

   • Compact installation: Narrow width saves panel/rail space.

   • Flexible safety device compatibility: Supports emergency stops, guard interlocks, foot switches, area-sensors, etc.

   • High reliability for industrial usage: Robust design suitable for continuous operation in industrial environments.

   • Easy wiring & maintenance: Screw terminals and clear connections simplify installation and service.

   Typical Applications

   • Emergency stop monitoring on automated production lines.

   • Monitoring of safety doors/guards and machine shutdown control.

   • Safety zone protection in robot work-cells or assembly lines (foot switches, light curtains, mats).

   • Heavy-duty machine safety circuits: packaging, printing, stamping, die-casting equipment.

   • Safety implementation in food, pharmaceutical, logistics equipment.

   Precautions / Notes

   • Although compact (~45 mm wide), allow adequate clearance for wiring and heat dissipation.

   • When replacing with newer models, check compatibility of pin-outs, certification and safety performance.

   • Verify that the 24 V DC supply is stable and adequate to avoid nuisance trips.

   • Safety circuits must be designed according to standards (EN ISO 13849-1, IEC 62061) and not rely solely on a single component.

   • Avoid installation in ambient conditions beyond the rated range (e.g., over +55 °C) or in environments with excessive vibration or shock.

   • Ensure wiring of dual-channel inputs is correct and that any fault or open condition will de-energize the safety outputs.

   • As this is an older model, confirm spare-parts availability and whether it still meets long-term project safety requirements; consider newer replacement series if necessary.

4. The structure and details of the product：
5. 

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