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ABB RT7A 1.5s 115AC ABB Safety relay
ABB RT7A 2TLA010028R2400 is a universal 115 V AC safety relay with two instantaneous NO outputs, two delayed NO outputs with up to 1.5 s off-delay and one NC output for machinery safety applications.
Why Choose the ABB RT7A 1.5s 115AC Safety Relay?
The ABB RT7A 2TLA010028R2400 is a universal 115 V AC safety relay with delayed safety outputs from the ABB Jokab Safety RT range. Designed for machinery safety applications, it combines immediate and time-delayed relay outputs to support systems where a controlled stopping sequence is required before final isolation of hazardous machine functions.
The RT7A provides 2 normally open instantaneous outputs, 2 normally open delayed outputs and 1 normally closed output. Its delayed redundant relay outputs provide an off-delay of up to 1.5 s, making this variant suitable for applications involving controlled stopping, delayed output functions and other safety-related machine control requirements.
Operating from a 115 V AC, 50–60 Hz supply, the ABB RT7A can be used with compatible emergency stops, guard interlocks, light curtains, light beams, safety mats, contact strips, enabling devices and other machinery safety equipment. Its 45 mm wide DIN rail format provides a practical solution for integration into industrial safety control panels.
Key Advantages
- Universal safety relay suitable for numerous machinery safety applications.
- Combines instantaneous and delayed safety outputs within one relay.
- 2 delayed outputs with up to 1.5 s off-delay support controlled stopping sequences.
- 115 V AC supply for compatible industrial control systems.
- Suitable for emergency stops, interlocks, light curtains and other safety devices.
- Compact 45 mm DIN rail housing simplifies control-panel integration.
Key Features
- ABB Jokab Safety RT7A safety relay.
- 115 V AC supply.
- 50–60 Hz supply frequency.
- 2 NO instantaneous relay outputs.
- 2 NO delayed redundant relay outputs.
- 1 NC relay output.
- Maximum 1.5 s off-delay.
- Suitable for multiple safety input applications.
- Designed for delayed safety output functions.
- DIN rail mounting.
- 45 mm module width.
Reliable Delayed Control for Machinery Safety Systems
Machinery with moving components can require a controlled stopping sequence rather than immediate removal of all control power. The ABB RT7A supports these applications by providing both instantaneous and delayed relay outputs, allowing different stages of a safety-related stopping process to occur in the required sequence.
The 2TLA010028R2400 variant provides two delayed redundant outputs with a maximum 1.5 s off-delay. Its universal safety-relay functionality makes it suitable for integration with a broad selection of compatible safety devices, including emergency stops, interlocking guards, light curtains, safety mats and enabling controls.
Typical Applications
- Emergency-stop safety circuits.
- Interlocking switches, gates and hatches.
- Safety light curtains and light beams.
- Safety mats and contact strips.
- Hold-to-run and enabling devices.
- Foot-operated safety control devices.
- Area supervision systems.
- Safety output expansion.
- Machinery requiring delayed safety outputs.
- Controlled industrial machine stopping sequences.
Technical Specifications
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| SIL (up to) | SIL 3 | |
|---|---|---|
| Timing Function | None (instantaneous) | |
| Auxiliary Contacts | 1 NC | |
| Coil / Supply Voltage | 115 V AC | |
| Manufacturer | ABB | |
| Product range | ABB Jokab Safety | |
| Series | RT | |
| Model | RT7A 1.5s 115AC | |
| Manufacturer part number | 2TLA010028R2400 | |
| Product type | Safety relay | |
| Rated control supply voltage | 115 V AC | |
| Supply frequency | 50–60 Hz | |
| AC supply power consumption | 8.8 VA | |
| Instantaneous outputs | 2 NO | |
| Delayed outputs | 2 NO | |
| Auxiliary output | 1 NC | |
| Maximum off-delay | 1.5 s | |
| Safety Category according to ISO 13849-1 | Category 4 | |
| Mounting | DIN rail | |
| Width | 45 mm | |
| Height | 84 mm | |
| Depth | 120 mm | |
| Net weight | 0.550 kg | |
| EAN | 7350024431933 |
Frequently Asked Questions
What is the ABB RT7A 2TLA010028R2400 used for?
The ABB RT7A is a universal safety relay for machinery safety applications requiring both instantaneous and delayed outputs, including emergency stops, guard interlocks, light curtains, safety mats and controlled stopping systems.
What supply voltage does the ABB RT7A 2TLA010028R2400 require?
The 2TLA010028R2400 variant is designed for a 115 V AC, 50–60 Hz supply.
What outputs does the ABB RT7A 2TLA010028R2400 provide?
The RT7A provides 2 normally open instantaneous outputs, 2 normally open delayed outputs and 1 normally closed output.
What is the delay time of the ABB RT7A 2TLA010028R2400?
The two delayed redundant relay outputs provide an off-delay of up to 1.5 s, supporting machinery applications that require a controlled stopping sequence.
What safety devices can be used with the ABB RT7A?
The RT7A is suitable for applications involving compatible emergency stops, interlocking switches, safety light curtains, light beams, safety mats, contact strips, enabling devices, foot controls and other safety-related equipment.
Trusted for Industrial Machine Safety
ABB Jokab Safety RT relays provide established machinery safety functionality for industrial automation systems, with the RT7A combining universal safety monitoring and delayed outputs for applications requiring controlled safety-related stopping sequences.
