Why Choose the ABB SENTRY TSR20MP Safety Relay?
The ABB SENTRY TSR20MP (2TLA010061R0101) is a compact and reliable OFF-delay safety relay designed for timed safety functions in industrial machinery and automation systems. As part of the ABB Sentry TSR safety timer series, it provides delayed safety outputs for applications where controlled stopping or delayed disconnection is required.
The TSR20MP provides 3 normally open (3NO) + 1 normally closed (1NC) delayed relay outputs and accepts a wide-range 85–265 V AC / 120–275 V DC supply. Its OFF-delay function provides selectable delay times of 0.5 s or 1.5 s, allowing the required timing to be selected directly using a switch on the front of the relay.
Designed for monitoring safety devices with contacts using two equivalent channels, the TSR20MP can also be used as an expansion relay where additional timed safety outputs are required. The push-in spring terminals simplify control-panel wiring, while the compact 22.5 mm-wide housing helps conserve DIN-rail space in industrial safety systems.
Key Advantages
- Compact OFF-delay safety relay for timed machine safety functions.
- Wide-range 85–265 V AC / 120–275 V DC supply.
- 3NO + 1NC delayed relay outputs for flexible safety-related switching.
- Selectable 0.5 s or 1.5 s OFF-delay.
- Designed for monitoring safety devices with two equivalent contact channels.
- Can be used as an expansion relay with timer functionality.
- Push-in spring terminals simplify installation and maintenance.
- Suitable for safety applications up to PL e / SIL 3.
Key Features
- ABB Sentry TSR20MP safety relay.
- ABB order code 2TLA010061R0101.
- 85–265 V AC / 120–275 V DC supply.
- 3 normally open + 1 normally closed delayed relay outputs.
- Dedicated OFF-delay timer function.
- Selectable delay times of 0.5 s or 1.5 s.
- Two equivalent input channels for contact-based safety devices.
- Push-in spring connection terminals.
- Extensive LED status indication.
- Compact 22.5 mm-wide housing for DIN-rail installation.
Reliable Timed Safety Control for Industrial Machinery
OFF-delay safety relays keep their safety outputs active for a predetermined period after the monitored input changes state. This allows machinery to complete a controlled stopping sequence before the delayed outputs switch, making timed safety relays particularly useful for machinery with moving components that cannot be stopped instantaneously.
The ABB SENTRY TSR20MP combines this functionality with two-channel safety-device monitoring and 3NO + 1NC delayed outputs. Its wide AC/DC supply range, selectable timing and push-in spring terminals make it a practical solution for both new machinery and safety-system upgrades requiring dependable timed output expansion.
Typical Applications
- Industrial machinery requiring timed safety shutdown.
- Controlled stopping sequences for rotating machinery.
- Timed expansion of safety relay outputs.
- Safety gates and machine interlocking systems.
- Emergency-stop safety circuits requiring delayed outputs.
- Automated manufacturing and material handling equipment.
- OEM machinery and industrial safety control panels.
