Why Choose the ABB SENTRY SSR20P Safety Relay?
The ABB SENTRY SSR20P (2TLA010051R0001) is a compact and reliable safety relay for two-hand control applications, designed for use in industrial machinery and safety-related control systems. As part of the ABB Sentry safety relay series, the SSR20P provides dependable monitoring where simultaneous two-hand operation is required to help protect machine operators.
The SSR20P features 3 normally open (3NO) safety relay outputs and 1 normally closed (1NC) output, providing practical switching capability for safety circuits. It operates from a 24 V DC supply and uses convenient push-in spring terminals, helping reduce wiring time during control-panel assembly and maintenance.
Designed specifically for monitoring two-hand control devices, the SSR20P supports manual or automatic reset selectable using a switch on the front of the relay. Its slim 22.5 mm width helps conserve DIN-rail space, while the Sentry platform is designed for safety applications up to Performance Level e (PL e).
Key Advantages
- Dedicated safety relay for two-hand control devices.
- 3NO + 1NC relay outputs for safety-related switching and signalling.
- 24 V DC supply voltage suitable for industrial control systems.
- Push-in spring terminals simplify installation and panel wiring.
- Manual or automatic reset selectable from the front of the relay.
- Compact 22.5 mm-wide housing conserves DIN-rail space.
- Designed for safety applications up to Performance Level e (PL e).
Key Features
- ABB Sentry SSR20P safety relay.
- ABB order code 2TLA010051R0001.
- 24 V DC control supply.
- 3 normally open + 1 normally closed relay outputs.
- Designed for two-hand control monitoring.
- Selectable manual or automatic reset.
- Push-in spring connection terminals.
- IP20 degree of protection.
- Slim industrial housing for control-cabinet installation.
Reliable Two-Hand Safety Control for Industrial Machinery
Two-hand control systems are used on machinery where an operator must actuate two separate controls as part of the machine safety function. The ABB SENTRY SSR20P monitors the associated two-hand control device and provides safety-related relay outputs for integration with the machine control circuit.
The combination of 3NO + 1NC outputs, selectable manual or automatic reset and push-in spring terminals makes the SSR20P well suited to modern industrial control panels. Its narrow housing also allows safety functions to be incorporated efficiently where DIN-rail space is limited.
Typical Applications
- Two-hand control stations on industrial machinery.
- Presses and forming machinery requiring operator safety controls.
- Production and assembly equipment.
- Automated manufacturing machinery.
- Machine safety control panels.
- OEM machinery incorporating two-hand safety functions.
