Lovato SRAMF21 is a 24 V DC multifunction safety relay with 2NO safety outputs and 1 PNP feedback output for emergency stops, safety gates, OSSD devices, RFID sensors and two-hand controls up to Category 4 and PLe.
£391.10
The Lovato SRAMF21 is a compact multifunction safety relay designed to monitor and control a wide range of machine safety devices from a single DIN-rail mounted module. Part of the Lovato SRA safety relay series, it combines 2NO safety outputs and 1 PNP signalling output with selectable safety functions for flexible integration into industrial machinery and automation systems.
The SRAMF21 supports applications including emergency-stop circuits, safety gate monitoring, two-hand control devices, RFID safety sensors and safety devices with fail-safe OSSD outputs. The required function is selected using the frontal trimmer, allowing one relay to cover multiple common machine-safety applications while simplifying component selection and panel design.
Operating from a nominal 24 V DC auxiliary supply, the SRAMF21 provides two normally open safety relay outputs with forcibly guided contacts plus a PNP feedback/signalling output. It is designed for safety systems up to Category 4 and Performance Level e (PLe) according to ISO 13849-1, making it suitable for demanding safety-related control applications.
A multifunction safety relay provides safety-related monitoring between protective devices and the machine control circuit. The Lovato SRAMF21 consolidates several common safety functions into one module, allowing the required application to be selected using the dedicated frontal trimmer rather than installing separate specialised relays for each type of safety device.
The SRAMF21 can monitor emergency-stop devices, safety gate systems, two-hand controls, RFID sensors and devices with fail-safe OSSD outputs such as safety light curtains. Its two forcibly guided NO safety outputs provide the safety switching interface, while the additional PNP output can be used for feedback or signalling within the control system.
| HS Code | 85365080 |
|---|---|
| Manufacturer | Lovato Electric |
| Series | SRA |
| Model | SRAMF21 |
| Product type | Multifunction safety relay |
| Output configuration | 2NO + 1PNP |
| Number of safe NO outputs | 2 |
| Feedback output | 1 PNP |
| Safety output type | Relays with forcibly guided contacts |
| Nominal auxiliary supply | 24 V DC |
| Auxiliary supply operating range | 19–29 V DC |
| Number of inputs | 2 |
| Input voltage | 0–30 V DC |
| Typical input current | 4.3 mA |
| AC-1 output rating | 6 A at 250 V AC, 2000 VA |
| AC-15 output rating | 5 A at 230 V AC |
| DC-13 output rating | 2 A at 24 V DC |
| UL 508 pilot duty | B300 / Q300 |
| Safety category | Up to Category 4 according to ISO 13849-1 |
| Performance level | Up to PLe according to ISO 13849-1 |
| Rated insulation voltage | 4 kV |
| Overvoltage category | III |
| Mechanical life | >107 cycles |
| Electrical life | 105 cycles at AC-1 and 360 operations/hour |
| Mounting | 35 mm DIN rail |
| Front protection rating | IP40 |
| Terminal protection rating | IP20 |
| Pollution degree | 2 |
| Operating temperature | -25 to +55 °C |
| Storage temperature | -30 to +70 °C |
| Relative humidity | ≤95% |
| Weight | 150 g |
| EAN | 8013975296127 |
The SRAMF21 is a multifunction safety relay used to monitor safety-related devices including emergency stops, safety gates, RFID sensors, two-hand controls and devices with fail-safe OSSD outputs.
The SRAMF21 provides 2 normally open safety outputs and 1 PNP feedback/signalling output. The safety relay outputs use forcibly guided contacts.
The relay has a nominal auxiliary supply voltage of 24 V DC, with an operating range of 19–29 V DC.
The SRAMF21 is designed for safety-related applications up to Category 4 and Performance Level e (PLe) according to ISO 13849-1, subject to the design and configuration of the complete safety system.
Yes. The SRAMF21 supports safety devices with fail-safe OSSD outputs, including applications involving safety light curtains and RFID safety sensors.
The required multifunction operating mode is selected using the dedicated frontal trimmer, allowing the module to be configured for different supported safety applications.
The SRAMF21 is designed for mounting on a standard 35 mm DIN rail inside an industrial control panel or machine electrical enclosure.
Lovato SRA safety relays provide machine builders, panel builders and automation engineers with flexible safety monitoring solutions for emergency stops, guards, OSSD devices, RFID sensors and other safety-related machine control applications.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...