The E3NXFA11AN2MOMS: NPN fibre amplifier, 30 µs response, 100 mA load current. Takes 10–30 V supply, red LED for glass or plastic fibres. Light-ON / Dark-ON selectable. The 10 mm wide housing fits the E3NX-FA base; cable exits at 2 m. Ambient range -25 to 55 °C. Response time is 30 µs — fast enough for small-part detection at moderate line speeds. The NPN output sinks up to 100 mA, enough to drive a compact PLC input or small relay directly.
NPN vs PNP — the decision difference
Step to this NPN version if your PLC sinks current. For sourcing inputs, use the PNP variant with identical dimensions, cable, and response. The earlier E3NX-MA series brother (E3NXMA412MOMS) runs 100 µs response and adds an IP50 rating but shares the same mounting footprint. For speed-critical lines, stick with the 30 µs E3NX-FA.