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ABB SENTRY SSR20 24VDC 3no 1nc
ABB SENTRY SSR20 2TLA010051R0000 is a 24 V DC safety relay with 3 NO + 1 NC relay outputs and selectable manual or automatic reset for monitoring two-hand control devices on industrial machinery.
£159.27
Why Choose the ABB SENTRY SSR20 2TLA010051R0000 Safety Relay?
The ABB SENTRY SSR20 2TLA010051R0000 is a compact and reliable 24 V DC safety relay specifically designed for monitoring two-hand control devices in industrial machinery and automation systems. As part of the ABB Sentry safety relay range, the SSR20 combines dependable safety monitoring with straightforward configuration for machine-building and production applications.
The SSR20 provides 3 normally open (NO) and 1 normally closed (NC) relay output, allowing safety-related control of downstream contactors and machine functions. Its reset function can be configured for manual or automatic reset using a selector switch on the front of the relay, simplifying commissioning and adaptation to the required machine safety architecture.
Operating from a 24 V DC supply, the 2TLA010051R0000 uses screw-compression connection blocks and a slim 22.5 mm wide housing for efficient installation on DIN rail inside control cabinets. With support for applications up to Performance Level e (PL e) and Safety Category 4, it provides a robust solution for two-hand safety control on industrial machinery.
Key Advantages
- Purpose-designed safety relay for monitoring two-hand control devices.
- 3 NO + 1 NC relay outputs provide flexible safety-related switching.
- 24 V DC supply voltage suits standard industrial automation systems.
- Selectable manual or automatic reset via a front-mounted switch.
- Supports safety applications up to Performance Level e (PL e).
- Suitable for safety systems designed to Safety Category 4.
- Slim 22.5 mm housing width helps conserve DIN-rail space.
Key Features
- ABB SENTRY SSR20 safety relay.
- 24 V DC supply voltage.
- 3 normally open + 1 normally closed relay outputs.
- Designed specifically for two-hand control monitoring.
- Manual or automatic reset selectable from the front of the unit.
- No integrated time-delay function.
- Screw-compression connection blocks for secure field wiring.
- IP20 degree of protection.
- Supports safety performance up to PL e.
- Compact design for DIN-rail mounting in industrial control panels.
Reliable Two-Hand Safety Control for Industrial Machinery
Two-hand control devices are used on machinery where an operator must keep both hands away from a hazardous area while initiating or maintaining a machine operation. The ABB SENTRY SSR20 monitors the two-hand control inputs and provides safety-related relay outputs for interfacing with the machine's stopping or control system.
The SSR20 combines dedicated two-hand monitoring with configurable manual or automatic reset. Its 3 NO + 1 NC output configuration provides flexible integration with industrial control circuits, while the compact DIN-rail housing makes it practical for new machinery and control-panel upgrades where installation space is limited.
Typical Applications
- Two-hand control stations for industrial machinery.
- Presses and forming machinery.
- Cutting and processing equipment.
- Assembly and production machinery.
- Operator-controlled hazardous machine cycles.
- Manufacturing and factory automation systems.
- OEM machinery and machine-building projects.
- Industrial safety control panels.
Technical Specifications
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| Reset Type | Manual or automatic / monitored | |
|---|---|---|
| Safety Outputs | 3NO + 1NC | |
| Contacts | 3NO + 1NC | |
| Device Type | Safety relay module | |
| SIL (up to) | SIL 3 | |
| Timing Function | None (instantaneous) | |
| Coil / Supply Voltage | 24 V DC | |
| IP Rating | IP20 | |
| Manufacturer | ABB | |
| Series | Sentry | |
| Model | SSR20 | |
| Manufacturer part number | 2TLA010051R0000 | |
| Product type | Safety relay | |
| Supply voltage | 24 V DC | |
| Relay outputs | 3 NO + 1 NC | |
| Safety function | Two-hand control monitoring | |
| Reset function | Manual or automatic, selectable by front switch | |
| Timer function | No time delay | |
| Connection type | Screw-compression terminals | |
| Performance Level | Up to PL e | |
| Safety Category | Category 4 | |
| Degree of protection | IP20 | |
| Mounting | DIN rail | |
| Product width | 22.5 mm | |
| Product height | 120 mm | |
| Product depth | 120 mm | |
| Product net weight | 0.207 kg | |
| EAN | 7350024483307 | |
| HS Code | 85364900 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB SENTRY SSR20 2TLA010051R0000 used for?
The ABB SENTRY SSR20 is a safety relay designed for monitoring two-hand control devices used to help protect operators working with industrial machinery.
How many outputs does the ABB SSR20 provide?
The 2TLA010051R0000 provides 3 normally open (NO) and 1 normally closed (NC) relay output.
What supply voltage does the ABB 2TLA010051R0000 require?
The ABB SENTRY SSR20 2TLA010051R0000 operates from a 24 V DC supply.
Does the ABB SSR20 support manual and automatic reset?
Yes. The SSR20 allows manual or automatic reset to be selected using a switch located on the front of the safety relay.
Does the ABB SSR20 have a time-delay function?
No. The 2TLA010051R0000 is the non-time-delay SSR20 version and is intended primarily for monitoring two-hand safety control devices.
Trusted by Machine Builders and Safety Professionals
ABB Sentry safety relays are designed for dependable industrial machine safety monitoring and straightforward control-panel integration. The SSR20 combines dedicated two-hand control monitoring, selectable reset functionality and 3 NO + 1 NC relay outputs in a compact 24 V DC DIN-rail module.
