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This relay family monitors E-STOP, safety gates, and light barriers — from compact single-function relays to modular units switching up to 16 A per contact.
This relay family covers safety relay monitoring across several device tiers. The standard monitoring relays monitor E-STOP, safety gates, or light barriers — a certified variant to EN 574 Type IIIC or Type IIIA — with timer relay variants also available with pulsing or delay-on energisation. A compact tier scales the same monitoring down: one variant covers E-STOP or a safety gate, while another monitors light barriers up to Type 4 or sensors with OSSD outputs. A modular option switches currents of up to 16 A AC/DC per contact for E-STOP, safety gate, and light barrier monitoring.
Device Tiers
Standard, compact, and modular relay variants
Standard
EN 574 (Type IIIC / Type IIIA, certified variant)
Max Switching Current
16 A AC/DC per contact (modular variant)
Light Barrier Compatibility
Up to Type 4 (compact tier)
The standard relays monitor emergency stop and safety gate circuits, with the certified variant built to EN 574 Type IIIC/IIIA.
The compact tier's higher variant monitors light barriers up to Type 4 or sensors with OSSD outputs.
The modular option switches up to 16 A AC/DC per contact, for lines that need more switching capacity than a compact relay.
The standard tier includes a certified variant to EN 574 Type IIIC or Type IIIA, as listed on the product page. Please ask the team which relay this applies to and for the certificate and datasheet for your configuration.
The input devices, such as emergency stop buttons, safety switches on gates and light curtains, send their signals to the relay. The relay monitors them and, when a device is triggered, opens its safety contacts to stop the hazardous movement. Prazamana's range includes all of these devices, so they can be selected to work together.
Safety relays suit simple, dedicated safety functions, such as monitoring one emergency stop, gate or light curtain. A safety PLC such as Prazamana's PLC Controller suits machines with many safety functions, more complex logic, or a need to combine safety and standard control. The choice depends on your machine and risk assessment, and the team can advise.
Get in touch and we'll confirm availability and specifications.