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ABB SENTRY SSR32 24VDC 2no + 2no delayable
ABB Sentry SSR32 2TLA010052R0400 is a 24 V DC safety relay with two immediate NO safety outputs, two NO outputs with a fixed 0.5-second OFF-delay, manual or automatic reset and monitoring for contact-based and OSSD safety devices.
£223.45
Why Choose the ABB Sentry SSR32 24VDC 2TLA010052R0400 Safety Relay?
The ABB Sentry SSR32 24VDC 2TLA010052R0400 is a compact safety relay with immediate and delayed safety outputs for monitoring safety-related circuits in industrial machinery and automation systems. Part of ABB's Sentry SSR range, the SSR32 is designed for safety devices with contacts using one or two equivalent channels, as well as safety devices equipped with OSSD outputs such as compatible light curtains and other electro-sensitive protective equipment.
Operating from a 24 V DC supply, the SSR32 provides 2 NO immediate safety outputs plus 2 delayed NO safety outputs. The two delayed contacts have a fixed 0.5 s OFF-delay, allowing part of the safety circuit to remain active briefly after a stop demand while the two immediate contacts switch without the intentional delay.
The SSR32 supports manual or automatic reset, selectable using a switch on the front of the relay, and can monitor emergency stops, gate switches and compatible OSSD safety devices. The 2TLA010052R0400 version uses screw-compression connection blocks and has a slim 22.5 mm wide DIN rail housing. ABB specifies safety performance up to PL e, making the SSR32 suitable for demanding machinery safety applications when correctly integrated and validated.
Key Advantages
- Combines immediate and delayed failsafe relay outputs in one compact safety relay.
- 2 NO immediate + 2 NO delayed safety outputs.
- Fixed 0.5 s OFF-delay on the two delayed normally open outputs.
- 24 V DC supply for standard industrial safety-control systems.
- Monitors safety devices with single-channel or dual equivalent-channel contacts.
- Supports compatible safety devices with OSSD outputs.
- Suitable for emergency-stop and safety gate monitoring.
- Manual or automatic reset selectable from the front of the relay.
- Safety performance up to Performance Level e (PL e).
- Compact 22.5 mm wide construction saves control-panel space.
Key Features
- ABB Sentry SSR32 safety relay.
- Manufacturer part number 2TLA010052R0400.
- 24 V DC supply voltage.
- 2 NO immediate failsafe relay outputs.
- 2 NO delayed failsafe relay outputs.
- 0.5 s fixed OFF-delay on delayed outputs.
- Monitoring of safety devices with contacts.
- Single-channel safety-device monitoring capability.
- Dual equivalent-channel safety-device monitoring capability.
- Monitoring of compatible OSSD / PNP safety outputs.
- Emergency-stop monitoring.
- Safety gate-switch monitoring.
- Manual / automatic reset selection.
- Front-mounted reset-selection switch.
- LED indication supports status monitoring and diagnostics.
- Screw-compression connection blocks.
- IP20 protection.
- 35 mm DIN rail mounting.
Immediate and 0.5-Second Delayed Safety Control
The ABB Sentry SSR32 combines two immediate and two time-delayed safety contacts within a single 22.5 mm wide relay. When the monitored safety circuit changes to its unsafe state, the two immediate safety outputs can switch directly while the other two normally open contacts remain active for the fixed 0.5 s OFF-delay before opening. This allows safety-system designers to implement a controlled sequence between different machine functions without requiring a separate external timing relay.
Input monitoring supports safety devices with contacts using either one channel or two equivalent channels, together with compatible OSSD-output devices. The reset method can be configured for manual or automatic operation using the front-mounted selector, enabling the SSR32 to be adapted to the restart requirements of the machinery safety function.
Typical Applications
- Emergency-stop safety circuits.
- Safety gate and guard-switch monitoring.
- Light curtain and OSSD safety-device monitoring.
- Machinery requiring immediate and delayed safety outputs.
- Controlled machine stopping sequences.
- Motor, drive and contactor shutdown sequencing.
- Production and packaging machinery.
- Conveyor and material-handling equipment.
- Automated manufacturing and assembly systems.
- Industrial control panels requiring a fixed 0.5 s safety OFF-delay.
Technical Specifications
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| Reset Type | Manual or automatic / monitored | |
|---|---|---|
| Safety Outputs | 4NO | |
| Contacts | 4NO | |
| Device Type | Safety relay module | |
| SIL (up to) | SIL 3 | |
| Timing Function | Delayed outputs | |
| Coil / Supply Voltage | 24 V DC | |
| IP Rating | IP20 | |
| Manufacturer | ABB | |
| Product family | Sentry Safety Relays | |
| Product main type | SSR | |
| Series | SSR32 | |
| Model | Sentry SSR32 24VDC | |
| Manufacturer part number | 2TLA010052R0400 | |
| Product type | Safety relay with delayed outputs | |
| Supply voltage | 24 V DC | |
| Immediate failsafe outputs | 2 NO | |
| Delayed failsafe outputs | 2 NO | |
| Total failsafe relay outputs | 4 NO | |
| Timer function | Yes | |
| Timer type | OFF-delay | |
| OFF-delay time | 0.5 s | |
| Reset modes | Manual / automatic | |
| Reset selection | Front-mounted switch | |
| Single-channel contact monitoring | Yes | |
| Dual equivalent-channel contact monitoring | Yes | |
| OSSD device monitoring | Yes | |
| Emergency-stop monitoring | Yes | |
| Gate-switch monitoring | Yes | |
| Two-hand control | No | |
| Safety mat / edge / bumper monitoring | No | |
| Rated operational current | 3 A for applicable AC-15 / DC-13 utilisation | |
| Performance Level | Up to PL e | |
| Safety Integrity Level | Up to SIL 3 when correctly integrated | |
| Connection technology | Screw-compression connection blocks | |
| Conductor capacity | 0.2–3.3 mm² for applicable solid and ferruled conductors | |
| Mounting | DIN rail TH35-15 / TH35-7.5 according to IEC 60715 | |
| Degree of protection | IP20 | |
| Product net height | 120 mm | |
| Product net width | 22.5 mm | |
| Product net depth | 120 mm | |
| Product net weight | 0.207 kg | |
| GTIN / Barcode | 7350024483321 | |
| HS Code | 85364900 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB Sentry SSR32 2TLA010052R0400 used for?
The ABB Sentry SSR32 is a machine safety relay for monitoring safety devices with single- or dual-channel contacts and compatible OSSD outputs, including applications involving emergency stops, safety gates and electro-sensitive protective equipment.
What supply voltage does the ABB SSR32 require?
The Sentry SSR32 2TLA010052R0400 operates from a 24 V DC supply.
How many safety outputs does the ABB Sentry SSR32 have?
The SSR32 provides four normally open failsafe relay outputs: two operate without an intentional delay and two are provided with a fixed OFF-delay.
What is the delay time of the SSR32 delayed outputs?
The two delayed normally open relay outputs have a fixed 0.5 s OFF-delay. ABB's SSR42 is the related model with a longer 1.5 s OFF-delay.
Can the ABB SSR32 monitor OSSD safety devices?
Yes. The SSR32 supports monitoring of compatible safety devices with OSSD outputs, such as suitable light curtains and other electro-sensitive protective equipment.
Does the ABB SSR32 support manual and automatic reset?
Yes. The reset function can be configured for manual or automatic reset using a selector switch on the front of the relay.
Can the SSR32 monitor emergency stops and safety gates?
Yes. ABB specifies the SSR32 for emergency-stop and gate-switch monitoring, as well as compatible single-channel, dual-channel and OSSD safety-device circuits.
What safety performance can the ABB SSR32 support?
The Sentry SSR32 can support machinery safety functions up to Performance Level e (PL e) and SIL 3 when correctly configured, integrated and validated as part of the complete safety-related control system.
What terminal type does 2TLA010052R0400 use?
The 2TLA010052R0400 version uses screw-compression connection blocks. The related SSR32P, part number 2TLA010052R0401, uses Push-in connection blocks.
How large is the ABB Sentry SSR32?
The SSR32 measures approximately 120 × 22.5 × 120 mm (H × W × D) and weighs approximately 0.207 kg, providing four safety outputs in a compact DIN rail format.
Trusted by Machine Safety Professionals
ABB Sentry SSR32 safety relays combine flexible safety-device monitoring with two immediate and two delayed failsafe relay outputs, providing a compact 24 V DC solution for machinery applications requiring a controlled 0.5 s safety OFF-delay.
