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2TLA010051R0001 ABB SENTRY SSR20P 24 V DC Safety Relay 3NO + 1NC
ABB SENTRY SSR20P 2TLA010051R0001 is a 24 V DC safety relay for two-hand control monitoring with 3NO + 1NC relay outputs, selectable manual or automatic reset and push-in spring terminals.
£165.65
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.
Technical Specifications
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| Reset Type | Manual or automatic / monitored | |
|---|---|---|
| Safety Outputs | 3NO + 1NC | |
| Device Type | Safety relay module | |
| Contacts | 3NO + 1NC | |
| SIL (up to) | SIL 3 | |
| Timing Function | None (instantaneous) | |
| Series | Sentry | |
| ABB order code | 2TLA010051R0001 | |
| Product type | Safety relay / two-hand control relay | |
| Supply voltage | 24 V DC | |
| Relay outputs | 3NO + 1NC | |
| Safety function | Two-hand control monitoring | |
| Reset | Manual or automatic, selectable | |
| Terminal type | Push-in spring terminals | |
| Degree of protection | IP20 | |
| Performance Level | Up to PL e | |
| Rated operational current AC-1 | 5 A | |
| Dimensions (H × W × D) | 120 × 22.5 × 120 mm | |
| Product net weight | 0.207 kg | |
| Ambient operating temperature | −25 to +65 °C |
Frequently Asked Questions
What is the ABB SENTRY SSR20P used for?
The ABB SENTRY SSR20P is a safety relay designed for monitoring two-hand control devices used in industrial machinery safety systems.
What supply voltage does the SSR20P require?
The SSR20P operates from a 24 V DC supply.
How many outputs does the ABB SSR20P provide?
The relay provides 3 normally open (3NO) and 1 normally closed (1NC) relay outputs.
What type of terminals does 2TLA010051R0001 use?
The ABB 2TLA010051R0001 uses push-in spring terminals, allowing fast and convenient control-panel wiring.
Can the ABB SSR20P use manual and automatic reset?
Yes. The SSR20P supports manual or automatic reset, selectable using the switch provided on the front of the relay.
Trusted Safety Technology for Industrial Machinery
ABB Sentry safety relays provide compact and dependable safety-control solutions for industrial machinery, with the SSR20P specifically designed to support reliable monitoring of two-hand control applications.
