Why Choose the ABB JSR3T 24 AC/DC Expansion Relay?
The ABB JSR3T 2TLA010017R0100 is a safety expansion relay with delayed outputs from the ABB Jokab Safety range. Designed for connection to a compatible safety relay, it provides additional delayed safety outputs for machinery and industrial safety circuits where a controlled delay is required before power is removed.
The JSR3T operates from a 24 V AC/DC supply and provides 2 × 1 NO relay outputs. Its hardwire-selectable off-delay can be configured between 0.5 and 10 s, with a Time Trim potentiometer providing further adjustment of the selected delay. This makes it particularly useful for applications requiring delayed stop signals and controlled Stop Category 1 functions.
With a compact 22.5 mm DIN rail housing, output indication and dual safety outputs, the ABB JSR3T provides a practical way to add time-delayed switching to compatible machine safety systems without unnecessarily increasing control-panel space.
Key Advantages
- Safe delayed outputs for compatible machinery safety circuits.
- Hardwire-selectable 0.5–10 s delay provides flexible timing configuration.
- 24 V AC/DC supply supports common industrial control voltages.
- 2 × 1 NO relay outputs provide redundant delayed output capability.
- Compact 22.5 mm width conserves DIN rail space.
- Suitable for expanding compatible safety relays where delayed stopping functions are required.
Key Features
- ABB Jokab Safety JSR3T expansion relay.
- 24 V AC/DC, 50–60 Hz supply.
- 2 × 1 normally open relay outputs.
- 0.5–10 s selectable off-delay.
- Hardwire delay selection using terminal links.
- Time Trim potentiometer for fine adjustment of the selected delay.
- Less than 20 ms activation response time.
- Output indication for straightforward status monitoring.
- 22.5 mm wide DIN rail housing.
- Designed for safe delayed stop applications.
Reliable Delayed Outputs for Machinery Safety Systems
Certain machinery safety functions require a controlled stop before power is removed from the machine actuator. When connected to a compatible safety relay, the ABB JSR3T provides delayed safety outputs that can support applications where this controlled stopping sequence is necessary.
The delay is selected by hardwired links at the JSR3T terminals, with settings available between 0.5 and 10 s. A Time Trim potentiometer allows the selected maximum delay to be reduced for finer adjustment, helping machine builders and control engineers configure the stopping sequence for the application.
Typical Applications
- Safety relay output expansion.
- Delayed machine stopping circuits.
- Controlled Stop Category 1 applications.
- Emergency-stop systems requiring delayed outputs.
- Industrial machinery safety systems.
- Automated production equipment.
- Machine control and safety panels.
