ABB SENTRY TSR20M 85-265AC 120-275DC 3no 1nc

Why Choose the ABB SENTRY TSR20M 2TLA010061R0100 Safety Relay?

The ABB SENTRY TSR20M 2TLA010061R0100 is a compact safety expansion timer relay with delayed outputs designed for industrial machine safety and automation systems. Part of the ABB Sentry TSR safety relay range, it provides 3 normally open (NO) and 1 normally closed (NC) delayed relay output for expanding the safe outputs of another safety relay or safety PLC.

The TSR20M is designed for monitoring safety devices with contacts using two equivalent channels. Its OFF-delay can be selected between 0.5 s and 1.5 s using a switch on the front of the relay, providing a straightforward way to implement controlled stopping sequences where selected machine functions must remain energised briefly after a safety demand.

With a wide operating supply of 85–265 V AC at 50/60 Hz or 120–375 V DC, the 2TLA010061R0100 is suitable for machinery using mains-derived control supplies as well as higher-voltage DC systems. Screw terminals, removable connection blocks and a slim 22.5 mm housing support efficient installation and maintenance within industrial control panels.

Key Advantages

• Dedicated safety expansion timer relay for industrial machinery.
• 3 NO + 1 NC delayed relay outputs for flexible safety-related switching.
• Selectable 0.5 s or 1.5 s OFF-delay for controlled stopping sequences.
• Wide 85–265 V AC / 120–375 V DC supply range.
• Designed for monitoring safety devices with contacts using two equivalent channels.
• Supports safety applications up to PL e / SIL 3.
• Compact 22.5 mm wide design conserves DIN-rail space.

Key Features

• ABB SENTRY TSR20M safety relay.
• 85–265 V AC, 50/60 Hz operating supply.
• 120–375 V DC operating supply.
• 3 normally open + 1 normally closed delayed relay outputs.
• 0.5 s or 1.5 s OFF-delay selectable by front switch.
• Two equivalent input channels for safety-device monitoring.
• Suitable for safe output expansion.
• Maximum relay switching voltage of 250 V AC.
• Screw terminals for secure industrial wiring.
• IP20 protection for installation inside suitable control enclosures.

Reliable Delayed Safety Output Expansion

Safety expansion relays are used when additional safe contacts are required from an existing safety relay or safety PLC. The ABB SENTRY TSR20M provides delayed relay outputs that can be incorporated into a machine stopping sequence, allowing selected functions to remain energised for a defined period before their safety contacts open.

The choice of 0.5 s or 1.5 s OFF-delay is made directly from the front of the TSR20M, simplifying configuration and commissioning. This functionality is particularly useful where machinery requires a short controlled stopping period before final isolation, while the wide AC/DC power supply makes the relay suitable for a broad range of industrial control architectures.

Typical Applications

• Safety relay output expansion.
• Safety PLC output expansion.
• Controlled machine stopping sequences.
• Delayed shutdown of safety-related equipment.
• Industrial conveyors and material handling systems.
• Production and packaging machinery.
• Manufacturing and process automation equipment.
• OEM machinery and industrial safety control panels.